Honda CRV OBD2 Codes: A Comprehensive Guide to Understanding Your Check Engine Light

The check engine light in your Honda CRV can be a source of stress for any car owner. Modern vehicles like the Honda CRV are equipped with an On-Board Diagnostics system, specifically OBD2, which monitors various systems and components. When something goes wrong, the system generates diagnostic trouble codes (DTCs), commonly known as OBD2 codes, to pinpoint the issue. Understanding these codes is the first step towards diagnosing and resolving car problems efficiently. This guide provides a comprehensive list of Honda Crv Obd2 Codes, helping you understand what they mean and what potential problems your vehicle might be facing.

This detailed list is based on Honda Service Bulletin #03-020 and covers a wide range of potential issues your Honda CRV could encounter. It’s important to note that while these codes can help identify the problem area, proper diagnosis often requires professional tools and expertise.

P0010 – P0099: Fuel and Air Metering and Auxiliary Emission Controls

P0010 Variable Valve Timing Control (VTC) Oil Control Solenoid Valve Malfunction
This code indicates a problem with the Variable Valve Timing Control (VTC) oil control solenoid valve circuit. This valve is crucial for regulating oil flow to the VTC actuator, which optimizes engine valve timing. A malfunction can affect engine performance and fuel efficiency.
P0011 Variable Valve Timing Control (VTC) System Malfunction
This code is similar to P0010, but it points to a more general malfunction within the VTC system itself. It could involve issues with the solenoid valve, the VTC actuator, or the engine control unit (ECU) commands.
P0101 Mass Airflow (MAF) Sensor Range/Performance Problem
The Mass Airflow (MAF) sensor measures the amount of air entering the engine. This code indicates that the MAF sensor reading is out of the expected range, possibly due to a dirty or faulty sensor, air leaks, or wiring issues.
P0102 Mass Airflow (MAF) Sensor Circuit Low Voltage
This code signifies a low voltage condition in the MAF sensor circuit. This could be caused by a short to ground, a faulty MAF sensor, or wiring problems.
P0103 Mass Airflow (MAF) Sensor Circuit High Voltage
Conversely, P0103 indicates a high voltage condition in the MAF sensor circuit, potentially due to a short to voltage, a faulty MAF sensor, or wiring problems.
P0106 Manifold Absolute Pressure (MAP) Sensor Range/Performance Problem
The Manifold Absolute Pressure (MAP) sensor measures the pressure within the intake manifold. This code suggests that the MAP sensor reading is outside the expected range, which could be due to a vacuum leak, a faulty sensor, or wiring problems.
P0107 Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage
A low voltage reading in the MAP sensor circuit is indicated by P0107. Potential causes include a short to ground, a faulty MAP sensor, or wiring issues.
P0108 Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage
P0108 indicates a high voltage condition in the MAP sensor circuit, possibly due to a short to voltage, a faulty MAP sensor, or wiring issues.
P0111 Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem
The Intake Air Temperature (IAT) sensor measures the temperature of the air entering the engine. This code suggests that the IAT sensor reading is not within the expected range, which could be due to a faulty sensor or wiring problems.
P0112 Intake Air Temperature (IAT) Sensor Circuit Low Voltage
P0112 indicates a low voltage condition in the IAT sensor circuit, potentially caused by a short to ground, a faulty IAT sensor, or wiring issues.
P0113 Intake Air Temperature (IAT) Sensor Circuit High Voltage
A high voltage condition in the IAT sensor circuit is signaled by P0113. This could be due to a short to voltage, a faulty IAT sensor, or wiring problems.
P0116 Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Problem
The Engine Coolant Temperature (ECT) sensor measures the engine coolant temperature. This code indicates that the ECT sensor reading is outside the expected range, which could be caused by a faulty sensor, low coolant level, or thermostat issues.
P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Input
P0117 signifies a low input signal from the ECT sensor circuit, potentially due to a short to ground, a faulty ECT sensor, or wiring problems.
P0118 Engine Coolant Temperature (ECT) Sensor Circuit High Input
A high input signal from the ECT sensor circuit is indicated by P0118. This could be caused by a short to voltage, a faulty ECT sensor, or wiring problems.
P0122 Throttle Position (TP) Sensor Circuit Low Input
The Throttle Position (TP) sensor monitors the throttle valve angle. P0122 indicates a low input signal from the TP sensor circuit, possibly due to a short to ground, a faulty TP sensor, or wiring issues.
P0123 Throttle Position (TP) Sensor Circuit High Input
P0123 signifies a high input signal from the TP sensor circuit, which could be due to a short to voltage, a faulty TP sensor, or wiring problems.
P0125 Engine Coolant Temperature (ECT) Sensor Slow Response
This code indicates that the ECT sensor is responding slower than expected. This could be due to a degraded sensor or issues with the cooling system affecting sensor readings.
P0128 Cooling System Malfunction
P0128 is a general code indicating a malfunction within the cooling system. This could encompass issues with the thermostat, radiator, coolant level, or ECT sensor.

P0130 – P0169: Oxygen Sensors

P0131 Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low Voltage
This code indicates a low voltage condition in the primary heated oxygen sensor (HO2S) circuit (Bank 1, Sensor 1). This sensor is crucial for monitoring the air-fuel mixture. Low voltage could be due to a lean mixture, a faulty sensor, or wiring problems.
P0132 Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit High Voltage
P0132 signifies a high voltage condition in the primary HO2S circuit (Bank 1, Sensor 1). High voltage might indicate a rich mixture, a faulty sensor, or wiring problems.
P0133 Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Circuit Slow Response
This code points to a slow response from the rear Air/Fuel Ratio (A/F) sensor (Bank 1, Sensor 1). This sensor helps fine-tune the air-fuel mixture. A slow response could be due to sensor degradation or exhaust leaks.
P0134 Air/Fuel Ratio (A/F) Sensor (Sensor 1) No Activity Detected
P0134 indicates that there is no activity detected from the Air/Fuel Ratio (A/F) sensor (Sensor 1). This could be due to a faulty sensor, wiring problems, or issues with the ECU.
P0135 Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Heater Circuit Malfunction
This code signals a malfunction in the heater circuit of the primary HO2S (Sensor 1). The heater is essential for bringing the sensor to operating temperature quickly. A heater malfunction can affect sensor accuracy.
P0137 Secondary Heated Oxygen Sensor (Secondary HO2S) Circuit Low Voltage
P0137 indicates a low voltage condition in the secondary HO2S circuit (Bank 1, Sensor 2). This sensor monitors the efficiency of the catalytic converter. Low voltage could be due to a lean condition, a faulty sensor, or wiring problems.
P0138 Secondary Heated Oxygen Sensor (Secondary HO2S) Circuit High Voltage
A high voltage condition in the secondary HO2S circuit (Bank 1, Sensor 2) is indicated by P0138. High voltage might suggest a rich condition, a faulty sensor, or wiring problems.
P0139 Secondary Heated Oxygen Sensor (Secondary HO2S) Slow Response
This code points to a slow response from the secondary HO2S (Bank 1, Sensor 2). A slow response could be due to sensor degradation or exhaust leaks.
P0141 Secondary Heated Oxygen Sensor (Secondary HO2S) (Sensor 2) Heater Circuit Malfunction
P0141 indicates a malfunction in the heater circuit of the secondary HO2S (Sensor 2). Similar to the primary sensor, the heater is important for sensor operation.
P0143 Third Heated Oxygen Sensor (Third HO2S) (Sensor 3) Circuit Low Voltage
This code indicates a low voltage condition in the third HO2S circuit (Sensor 3), if applicable to your CRV model.
P0144 Third Heated Oxygen Sensor (Third HO2S) (Sensor 3) Circuit High Voltage
P0144 signifies a high voltage condition in the third HO2S circuit (Sensor 3), if applicable.
P0145 Third Heated Oxygen Sensor (Third HO2S) (Sensor 3) Circuit Slow Response
A slow response from the third HO2S (Sensor 3) is indicated by P0145, if applicable.
P0147 Third Heated Oxygen Sensor (Third HO2S) (Sensor 3) Heater Circuit Malfunction
P0147 signals a malfunction in the heater circuit of the third HO2S (Sensor 3), if applicable.
P0153 Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Circuit Slow Response
This code is similar to P0133, but it applies to the front A/F sensor in Bank 2 (if applicable to V6 engines).
P0154 Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater System Malfunction
P0154 indicates a heater system malfunction for the front A/F sensor in Bank 2 (if applicable).
P0155 Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater Circuit Malfunction
This code is another variation of heater circuit malfunction for the front A/F sensor in Bank 2 (if applicable).
P0157 Front Secondary Heated Oxygen Sensor (Secondary HO2S) (Bank 2, Sensor 2) Circuit Low Voltage
P0157 is similar to P0137, but it applies to the front secondary HO2S in Bank 2 (if applicable).
P0158 Front Secondary Heated Oxygen Sensor (Secondary HO2S) (Bank 2, Sensor 2) Circuit High Voltage
This code is similar to P0138, but it applies to the front secondary HO2S in Bank 2 (if applicable).
P0159 Front Secondary Heated Oxygen Sensor (Secondary HO2S) (Bank 2, Sensor 2) Circuit Slow Response
P0159 mirrors P0139, but for the front secondary HO2S in Bank 2 (if applicable).
P0161 Front Secondary Heated Oxygen Sensor (Secondary HO2S) (Bank 2, Sensor 2) Heater Circuit Malfunction
This code is similar to P0141, but for the front secondary HO2S in Bank 2 (if applicable).

P0170 – P0199: Fuel System and Pressure

P0171 Fuel System Too Lean
P0171 indicates that the fuel system is running too lean, meaning there is too much air and not enough fuel in the air-fuel mixture. This can be caused by vacuum leaks, a faulty MAF sensor, low fuel pressure, or clogged fuel injectors.
P0172 Fuel System Too Rich
Conversely, P0172 suggests that the fuel system is running too rich, meaning there is too much fuel and not enough air. This can be caused by faulty fuel injectors, a faulty O2 sensor, high fuel pressure, or a restricted air intake.
P0174 Front Bank (Bank 2) Fuel System Too Lean
This code is similar to P0171 but specific to Bank 2 (if applicable to V6 engines).
P0175 Front Bank (Bank 2) Fuel System Too Rich
P0175 mirrors P0172 but for Bank 2 (if applicable).
P0191 Fuel Pressure Sensor Range/Performance Problem
This code indicates a problem with the fuel pressure sensor, which monitors the fuel pressure in the fuel rail. A faulty sensor or wiring issues can trigger this code.
P0192 Fuel Pressure Sensor Circuit Low Voltage
P0192 signifies a low voltage condition in the fuel pressure sensor circuit, possibly due to a short to ground, a faulty sensor, or wiring problems.
P0193 Fuel Pressure Sensor Circuit High Voltage
A high voltage condition in the fuel pressure sensor circuit is indicated by P0193. This could be caused by a short to voltage, a faulty sensor, or wiring problems.
P0196 EOT Sensor/Range Performance Problem
This code points to a performance issue with the Engine Oil Temperature (EOT) sensor.
P0197 EOT Sensor Circuit Low Voltage
P0197 indicates a low voltage condition in the EOT sensor circuit.
P0198 EOT Sensor Circuit High Voltage
A high voltage condition in the EOT sensor circuit is signaled by P0198.

P0200 – P0299: Injector Circuit and Misfire

P0222 Throttle Position (TP) Sensor 2 Circuit Low Voltage
This code is related to a secondary Throttle Position Sensor (TPS 2), if equipped, and indicates a low voltage condition.
P0223 Throttle Position (TP) Sensor 2 Circuit High Voltage
P0223 signifies a high voltage condition in the TPS 2 circuit.
P0300 Random Misfire
P0300 is a general misfire code, indicating that random or multiple cylinders are misfiring. Misfires can be caused by ignition problems (spark plugs, ignition coils), fuel delivery issues (injectors), vacuum leaks, or low compression.
P0301 No. 1 Cylinder Misfire
This code specifically indicates a misfire in cylinder number 1.
P0302 No. 2 Cylinder Misfire
Misfire in cylinder number 2.
P0303 No. 3 Cylinder Misfire
Misfire in cylinder number 3.
P0304 No. 4 Cylinder Misfire
Misfire in cylinder number 4.
P0305 No. 5 Cylinder Misfire
Misfire in cylinder number 5 (if applicable to V6 engines).
P0306 No. 6 Cylinder Misfire
Misfire in cylinder number 6 (if applicable to V6 engines).

P0325 – P0399: Ignition System or Misfire

P0325 Knock Sensor Circuit Malfunction
The knock sensor detects engine knocking or detonation. P0325 indicates a malfunction in the knock sensor circuit, which could be due to a faulty sensor or wiring issues.
P0335 Crankshaft Position (CKP) Sensor Circuit No Signal
The Crankshaft Position (CKP) sensor is crucial for engine timing and ignition. P0335 indicates that there is no signal from the CKP sensor circuit, which can prevent the engine from starting.
P0336 P0339 Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption
These codes indicate an intermittent signal interruption from the CKP sensor circuit.
P0340 Camshaft Position (CMP) Sensor No Signal
The Camshaft Position (CMP) sensor works with the CKP sensor for engine timing. P0340 indicates no signal from the CMP sensor circuit, which can also prevent the engine from starting or cause rough running.
P0341 Camshaft Position (CMP) Sensor A Intermittent Interruption
P0341 indicates an intermittent signal interruption from CMP Sensor A.
P0341 Variable Valve Timing Control (VTC) Phase Gap
This code, overlapping with P0341, can also indicate a phase gap issue within the Variable Valve Timing Control (VTC) system, beyond just the sensor signal.
P0344 Camshaft Position (CMP) Sensor Intermittent Interruption
Another code for intermittent CMP sensor signal interruption.
P0365 Camshaft Position (CMP) Sensor B No Signal
P0365 indicates no signal from CMP Sensor B (if applicable to DOHC engines).
P0366 P0369 Camshaft Position (CMP) Sensor B Intermittent Interruption
These codes signal intermittent signal interruption from CMP Sensor B (if applicable).
P0385 Crankshaft Position (CKP) Sensor B No Signal
P0385 indicates no signal from CKP Sensor B (if equipped with dual CKP sensors).
P0389 Crankshaft Position (CKP) Sensor B Intermittent Interruption
Intermittent signal from CKP Sensor B is indicated by P0389.

P0400 – P0499: Auxiliary Emission Controls

P0401 Exhaust Gas Recirculation (EGR) Insufficient Flow
The Exhaust Gas Recirculation (EGR) system reduces NOx emissions by recirculating a portion of exhaust gas back into the intake manifold. P0401 indicates insufficient EGR flow, which could be due to a clogged EGR valve, vacuum leaks, or a faulty EGR valve position sensor.
P0404 Exhaust Gas Recirculation (EGR) Control Circuit Range/Performance Problem
This code suggests a range or performance problem with the EGR control circuit.
P0406 Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit High Voltage
P0406 indicates a high voltage condition in the EGR valve position sensor circuit.
P0410 Air Pump Circuit Malfunction
The air pump is part of the secondary air injection system, which helps reduce emissions during cold starts. P0410 indicates a malfunction in the air pump circuit.
P0411 Secondary Air Injection System Incorrect Flow
P0411 suggests incorrect flow within the secondary air injection system.
P0420 Catalyst System Efficiency Below Threshold
P0420 is a common code indicating that the catalytic converter efficiency is below the required threshold. This could be due to a failing catalytic converter, exhaust leaks, or issues with oxygen sensors.
P0430 Front Bank Catalyst System Efficiency Below Threshold (Bank 2)
Similar to P0420, but specific to the catalytic converter in Bank 2 (if applicable).
P0441 Evaporative Emission (EVAP) Control System Incorrect Purge Flow
The Evaporative Emission (EVAP) system prevents fuel vapor from escaping into the atmosphere. P0441 indicates incorrect purge flow within the EVAP system, which could be due to a faulty purge valve or vacuum leaks in the EVAP system.
P0442 Evaporative Emission (EVAP) System Small Leak Detected
P0442 indicates a small leak in the EVAP system.
P0443 Evaporative Emission (EVAP) Canister Purge Valve Circuit Malfunction
This code points to a malfunction in the EVAP canister purge valve circuit.
P0451 Fuel Tank Pressure (FTP) Sensor Range/Performance Problem
The Fuel Tank Pressure (FTP) sensor monitors the pressure in the fuel tank. P0451 indicates a range or performance problem with the FTP sensor.
P0452 Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage
P0452 signifies a low voltage condition in the FTP sensor circuit.
P0453 Fuel Tank Pressure (FTP) Sensor Circuit High Voltage
A high voltage condition in the FTP sensor circuit is indicated by P0453.
P0456 Evaporative Emission (EVAP) System Very Small Leak Detected
P0456 indicates a very small leak in the EVAP system, often harder to locate than a small leak (P0442).
P0457 Evaporative Emission (EVAP) System Leak Detected Fuel Fill Cap Loose/Off
This code specifically points to a leak in the EVAP system likely caused by a loose or missing fuel filler cap. Always ensure your fuel cap is properly tightened.
P0461 Fuel Gauge Sending Unit Range/Performance Problem
P0461 indicates a range or performance problem with the fuel gauge sending unit.
P0462 Fuel Gauge Sending Unit Circuit Low Voltage
Low voltage in the fuel gauge sending unit circuit is indicated by P0462.
P0463 Fuel Gauge Sending Unit Circuit High Voltage
P0463 signifies high voltage in the fuel gauge sending unit circuit.
P0496 Evaporative Emission (EVAP) System High Purge Flow
P0496 indicates high purge flow in the EVAP system.
P0497 Evaporative Emission (EVAP) System Low Purge Flow
Low purge flow in the EVAP system is signaled by P0497.
P0498 Evaporative Emission (EVAP) Canister Vent Shut Valve Control Circuit Low Voltage
P0498 indicates low voltage in the EVAP canister vent shut valve control circuit.
P0499 Evaporative Emission (EVAP) Canister Vent Shut Valve Control Circuit High Voltage
High voltage in the EVAP canister vent shut valve control circuit is indicated by P0499.

P0500 – P0599: Vehicle Speed, Idle Control, and Auxiliary Inputs

P0500 Vehicle Speed Sensor (VSS) Circuit Malfunction
The Vehicle Speed Sensor (VSS) measures the vehicle’s speed. P0500 indicates a malfunction in the VSS circuit.
P0501 Vehicle Speed Sensor (VSS) Range/Peformance Problem
P0501 suggests a range or performance problem with the VSS.
P0505 Idle Control System Malfunction
P0505 is a general code indicating a malfunction in the idle control system.
P0506 Idle Control System RPM Lower Than Expected
This code suggests that the engine idle RPM is lower than expected.
P0507 Idle Control System RPM Higher Than Expected
Conversely, P0507 indicates that the idle RPM is higher than expected.
P0511 Idle Air Control (IAC) Valve Circuit Malfunction
The Idle Air Control (IAC) valve regulates airflow to control idle speed. P0511 indicates a malfunction in the IAC valve circuit.
P0521 EOP Sensor Range/Performance Problem
This code indicates a range or performance problem with the Engine Oil Pressure (EOP) sensor.
P0522 EOP Sensor Circuit Low Voltage
Low voltage in the EOP sensor circuit is indicated by P0522.
P0523 EOP Sensor Circuit High Voltage
P0523 signifies high voltage in the EOP sensor circuit.
P0560 ECM Back-up Circuit Low Voltage
P0560 indicates low voltage in the Engine Control Module (ECM) back-up circuit.
P0563 Engine Control Module (ECM)/Powertrain Control Module (PCM) Power Source Circuit Unexpected Voltage
This code suggests unexpected voltage in the ECM/PCM power source circuit.

P0600 – P0699: Computer Output Circuit Check

P0600 Multiplex Control System Troubleshooting
P0600 indicates a problem within the multiplex control system, which is a network communication system in the vehicle.
P0603 ECM/PCM Internal Control Module Keep Alive Memory (KAM) Error
This code suggests an error with the Keep Alive Memory (KAM) in the ECM/PCM. KAM stores learned values and settings.
P0606 ECM/PCM Processor Malfunction
P0606 is a serious code indicating a malfunction within the ECM/PCM processor itself.
P0661 Intake Manifold Runner Control (IMRC) Valve Position Sensor Circuit Low Voltage
The Intake Manifold Runner Control (IMRC) system optimizes airflow into the engine. P0661 indicates low voltage in the IMRC valve position sensor circuit.
P0662 Intake Manifold Runner Control (IMRC) Valve Position Sensor Circuit High Voltage
P0662 signifies high voltage in the IMRC valve position sensor circuit.
P0685 ECM/PCM Power Relay Control Circuit Malfunction
P0685 indicates a malfunction in the ECM/PCM power relay control circuit.

P0700 – P0999: Transmission

P0700 Automatic Transmission Control System
P0700 is a generic transmission code indicating a problem within the automatic transmission control system. This code often accompanies other more specific transmission codes.
P0705 Short in Transmission Range Switch Circuit (Multiple Shift-position Input)
P0705 indicates a short circuit in the transmission range switch circuit, possibly indicating multiple shift positions are being detected simultaneously.
P0706 Open in Transmission Range Switch Circuit
An open circuit in the transmission range switch circuit is indicated by P0706.
P0710 P0711 Problem in ATF Temperature Sensor Circuit
These codes indicate a problem with the Automatic Transmission Fluid (ATF) temperature sensor circuit.
P0712 Short in ATF Temperature Sensor Circuit
P0712 signifies a short circuit in the ATF temperature sensor circuit.
P0713 Open in ATF Temperature Sensor Circuit
An open circuit in the ATF temperature sensor circuit is indicated by P0713.
P0715 P0716 Problem in Mainshaft Speed Sensor Circuit
These codes point to a problem with the mainshaft speed sensor circuit in the transmission.
P0717 Problem in Mainshaft Speed Sensor Circuit (No Signal Input)
P0717 specifically indicates no signal input from the mainshaft speed sensor circuit.
P0718 Mainshaft Speed Sensor Intermittent Failure
An intermittent failure of the mainshaft speed sensor is indicated by P0718.
P0720 Countershaft Speed Sensor Circuit Malfunction
P0720 indicates a malfunction in the countershaft speed sensor circuit.
P0720 P0721 Problem in Countershaft Speed Sensor Circuit
These codes point to a problem with the countershaft speed sensor circuit.
P0722 Problem in Countershaft Speed Sensor Circuit (No Signal Input)
P0722 specifically indicates no signal input from the countershaft speed sensor circuit.
P0723 Countershaft Speed Sensor Intermittent Failure
An intermittent failure of the countershaft speed sensor is indicated by P0723.
P0725 Engine Speed Input Circuit Malfunction
P0725 indicates a malfunction in the engine speed input circuit to the transmission control system.
P0730 Problem in Shift Control System
P0730 is a general code indicating a problem within the transmission shift control system.
P0731 Problem in 1st Clutch and 1st Clutch Hydraulic Circuit
This code indicates a problem with the 1st clutch and its hydraulic circuit in the transmission.
P0732 Problem in 2nd Clutch and 2nd Clutch Hydraulic Circuit
Problem with the 2nd clutch and hydraulic circuit.
P0733 Problem in 3rd Clutch and 3rd Clutch Hydraulic Circuit
Problem with the 3rd clutch and hydraulic circuit.
P0734 Problem in 4th Clutch and 4th Clutch Hydraulic Clutch
Problem with the 4th clutch and hydraulic circuit.
P0735 Problem in 5th Clutch and 5th Clutch Hydraulic Circuit
Problem with the 5th clutch and hydraulic circuit (if applicable).
P0740 Problem in Lock-up Control System
P0740 indicates a problem within the torque converter lock-up control system.
P0741 Torque Converter Clutch Hydraulic Clutch Stuck OFF
This code suggests that the torque converter clutch is stuck in the OFF position.
P0743 Problem in Torque Converter Clutch Solenoid Valve Circuit
P0743 indicates a problem with the torque converter clutch solenoid valve circuit.
P0745 Problem in Hydraulic Control System of A/T Clutch Pressure Control Solenoid Valve A Circuit
Problem in the hydraulic control system related to A/T clutch pressure control solenoid valve A circuit.
P0746 A/T Clutch Pressure Control Solenoid Valve A Stuck OFF
A/T clutch pressure control solenoid valve A is stuck in the OFF position.
P0747 A/T Clutch Pressure Control Solenoid Valve A Stuck ON
A/T clutch pressure control solenoid valve A is stuck in the ON position.
P0748 Problem in A/T Clutch Pressure Control Solenoid Valve A Circuit
General problem in the A/T clutch pressure control solenoid valve A circuit.
P0750 Problem in Hydraulic Control System of Shift Solenoid Valve A Circuit
Problem in the hydraulic control system related to shift solenoid valve A circuit.
P0751 Shift Solenoid Valve A Stuck OFF
Shift solenoid valve A is stuck in the OFF position.
P0752 Shift Solenoid Valve A Stuck ON
Shift solenoid valve A is stuck in the ON position.
P0753 Problem in Shift Solenoid Valve A Circuit
General problem in shift solenoid valve A circuit.
P0756 Shift Solenoid Valve B Stuck OFF
Shift solenoid valve B is stuck in the OFF position.
P0757 Shift Solenoid Valve B Stuck ON
Shift solenoid valve B is stuck in the ON position.
P0758 Problem in Shift Solenoid Valve B Circuit
General problem in shift solenoid valve B circuit.
P0761 Shift Solenoid Valve C Stuck OFF
Shift solenoid valve C is stuck in the OFF position.
P0762 Shift Solenoid Valve C Stuck ON
Shift solenoid valve C is stuck in the ON position.
P0763 Problem in Shift Solenoid Valve C Circuit
General problem in shift solenoid valve C circuit.
P0771 Shift Solenoid Valve E Stuck OFF
Shift solenoid valve E is stuck in the OFF position.
P0773 Problem in Shift Solenoid Valve E Circuit
General problem in shift solenoid valve E circuit.
P0775 Problem in the Hydraulic Control System of A/T Clutch Pressure Control Solenoid Valve B Circuit
Problem in the hydraulic control system related to A/T clutch pressure control solenoid valve B circuit.
P0776 A/T Clutch Pressure Control Solenoid Valve B Stuck OFF
A/T clutch pressure control solenoid valve B is stuck in the OFF position.
P0777 A/T Clutch Pressure Control Solenoid Valve B Stuck ON
A/T clutch pressure control solenoid valve B is stuck in the ON position.
P0778 Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit
General problem in A/T clutch pressure control solenoid valve B circuit.
P0780 Problem in Shift Control System
General problem in the transmission shift control system.
P0795 Problem in Hydraulic Control System of A/T Clutch Pressure Control Solenoid Valve C Circuit
Problem in the hydraulic control system related to A/T clutch pressure control solenoid valve C circuit.
P0796 A/T Clutch Pressure Control Solenoid Valve C Stuck OFF
A/T clutch pressure control solenoid valve C is stuck in the OFF position.
P0797 A/T Clutch Pressure Control Solenoid Valve C Stuck ON
A/T clutch pressure control solenoid valve C is stuck in the ON position.
P0798 Problem in A/T Clutch Pressure Control Solenoid Valve C Ciruit
General problem in A/T clutch pressure control solenoid valve C circuit.
P0812 Open in Transmission Range Switch ATP RVS Switch Circuit
Open circuit in the transmission range switch ATP RVS switch circuit.
P0842 Short in 2nd Clutch Transmission Fluid Pressure Switch Clutch, or 2nd Clutch Transmission Fluid Pressure Switch (Clutch) Stuck ON
Short circuit or stuck ON condition in the 2nd clutch transmission fluid pressure switch.
P0843 Open in 2nd Clutch Transmission Fluid Pressure Switch Circuit, or 2nd Clutch Transmission Fluid Pressure Switch Stuck OFF
Open circuit or stuck OFF condition in the 2nd clutch transmission fluid pressure switch.
P0845 Problem in 3rd Clutch Pressure Switch Circuit
Problem in the 3rd clutch pressure switch circuit.
P0847 Short in 3rd Clutch Transmission Fluid Pressure Switch Circuit, or 3rd Clutch Transmission Fluid Pressure Switch Stuck ON
Short circuit or stuck ON condition in the 3rd clutch transmission fluid pressure switch.
P0848 Open in 3rd Clutch Transmission Fluid Pressure Switch Circuit, or 3rd Clutch Transmission Fluid Pressure Switch Stuck OFF
Open circuit or stuck OFF condition in the 3rd clutch transmission fluid pressure switch.
P0872 Short in 4th Clutch Transmission Fluid Pressure Switch Circuit, or 4th Clutch Transmission Fluid Pressure Switch Stuck ON
Short circuit or stuck ON condition in the 4th clutch transmission fluid pressure switch.
P0873 Open in 4th Clutch Transmission Fluid Pressure Switch Circuit, or 4th Clutch Transmission Fluid Pressure Switch Stuck OFF
Open circuit or stuck OFF condition in the 4th clutch transmission fluid pressure switch.
P0962 Problem in A/T Clutch Pressure Control Solenoid Valve A Circuit
Problem in A/T clutch pressure control solenoid valve A circuit.
P0963 Problem in A/T Clutch Pressure Control Solenoid Valve A
General problem with A/T clutch pressure control solenoid valve A.
P0966 Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit
Problem in A/T clutch pressure control solenoid valve B circuit.
P0967 Problem in A/T Clutch Pressure Control Solenoid Valve B
General problem with A/T clutch pressure control solenoid valve B.
P0970 Problem in A/T Clutch Pressure Control Solenoid Valve C Circuit
Problem in A/T clutch pressure control solenoid valve C circuit.
P0971 Problem in A/T Clutch Pressure Control Solenoid Valve C
General problem with A/T clutch pressure control solenoid valve C.
P0973 Short in Shift Solenoid Valve A Circuit
Short circuit in shift solenoid valve A circuit.
P0974 Open in Shift Solenoid Valve A Circuit
Open circuit in shift solenoid valve A circuit.
P0976 Short in Shift Solenoid Valve B Circuit
Short circuit in shift solenoid valve B circuit.
P0977 Open in Shift Solenoid Valve B Circuit
Open circuit in shift solenoid valve B circuit.
P0979 Short in Shift Solenoid Valve C Circuit
Short circuit in shift solenoid valve C circuit.
P0980 Open in Shift Solenoid Valve C Circuit
Open circuit in shift solenoid valve C circuit.
P0982 Short in Shift Solenoid Valve D Circuit
Short circuit in shift solenoid valve D circuit.
P0983 Open in Shift Solenoid Valve D Circuit
Open circuit in shift solenoid valve D circuit.
P0985 Short in Shift Solenoid Valve E Circuit
Short circuit in shift solenoid valve E circuit.
P0986 Open in Shift Solenoid Valve E Circuit
Open circuit in shift solenoid valve E circuit.

P1000 – P1999: Manufacturer Specific Powertrain DTCs

P1020 Valve Pause System Stuck Off
Manufacturer-specific code for Valve Pause System stuck OFF.
P1021 Valve Pause System Stuck On
Manufacturer-specific code for Valve Pause System stuck ON.
P1025 Valve Pause System Sticking Off
Manufacturer-specific code for Valve Pause System sticking OFF.
P1026 Valve Pause System Sticking On
Manufacturer-specific code for Valve Pause System sticking ON.
P1077 Intake Manifold Runner Control (IMRC) System Malfunction (Low rpm)
Manufacturer-specific IMRC malfunction at low RPM.
P1078 Intake Mainfold Runner Control (IMRC) System Malfunction (High rpm)
Manufacturer-specific IMRC malfunction at high RPM.
P1106 Barometric Pressure (BARO) Sensor Circuit Range/Performance Problem
Barometric Pressure (BARO) sensor range/performance issue.
P1107 Barometric Pressure (BARO) Sensor Circuit Low Voltage
Low voltage in BARO sensor circuit.
P1108 Barometric Pressure (BARO) Sensor Circuit High Voltage
High voltage in BARO sensor circuit.
P1121 Throttle Position (TP) Sensor Lower Than Expected
Throttle Position (TP) sensor reading lower than expected.
P1122 Throttle Position (TP) Sensor Higher Than Expected
TP sensor reading higher than expected.
P1128 Manifold Absolute Pressure (MAP) Sensor Circuit Lower Than Expected
MAP sensor reading lower than expected.
P1129 Manifold Absolute Pressure (MAP) Sensor Circuit Higher Than Expected
MAP sensor reading higher than expected.
P1130 Demand for Changing Both Secondary Heated Oxygen Sensor (Secondary HO2S) (Sensor 2) and Third Heated Oxygen Sensor (Third HO2S) (Sensor 3)
Demand to change both secondary and third HO2S sensors.
P1149 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem
A/F sensor (Sensor 1) range/performance issue.
P1149 Air/Fuel Ratio Sensor (Sensor 1) Circuit Lean Range
A/F sensor (Sensor 1) circuit lean range.
P1157 Air/Fuel Ratio (A/F) Sensor (Sensor 1) AFS Line High Voltage
High voltage in A/F sensor (Sensor 1) AFS line.
P1157 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Circuit High Voltage
High voltage in A/F sensor (Sensor 1) circuit.
P1157 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem
Redundant listing of A/F sensor range/performance issue.
P1158 Air/Fuel Ratio (A/F) Sensor (Sensor 1) AFS- Terminal Low Voltage
Low voltage in A/F sensor (Sensor 1) AFS- terminal.
P1159 Air/Fuel Ratio (A/F) Sensor (Sensor 1) AFS+ Terminal Low Voltage
Low voltage in A/F sensor (Sensor 1) AFS+ terminal.
P1162 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Slow Response
Slow response from A/F sensor (Sensor 1).
P1163 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Slow Response
Redundant listing of slow response from A/F sensor (Sensor 1).
P1163 Air/Fuel Ratio Sensor (Sensor 1) Slow Response
Redundant listing of slow response from A/F sensor (Sensor 1).
P1164 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem
Redundant listing of A/F sensor range/performance issue.
P1164 Air/Fuel Ratio (AF) Sensor (Sensor 1) Circuit Range/Performance
Redundant listing of A/F sensor range/performance issue.
P1165 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem
Redundant listing of A/F sensor range/performance issue.
P1165 Air/Fuel Ratio Sensor (Sensor 1) Circuit Range/Performance
Redundant listing of A/F sensor range/performance issue.
P1166 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Electrical Problem
Electrical problem in A/F sensor (Sensor 1) heater system.
P1166 Heated Oxgen Sensor Sensor1 (Primary HO2S) Heater Circuit Malfunction
Redundant listing of primary HO2S heater circuit malfunction.
P1167 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Malfunction
Heater system malfunction in A/F sensor (Sensor 1).
P1167 Heated Oxygen Sensor Sensor1 (Primary LAF HO2S) Heater System Malfunction
Redundant listing of primary LAF HO2S heater system malfunction.
P1168 Air/Fuel Ratio (A/F) Sensor (Sensor 1) LABEL Low Voltage
Low voltage in A/F sensor (Sensor 1) LABEL circuit.
P1169 Air/Fuel Ratio (A/F) Sensor (Sensor 1) LABEL High Voltage
High voltage in A/F sensor (Sensor 1) LABEL circuit.
P1182 Fuel Temperature Sensor Circuit Low Voltage
Low voltage in fuel temperature sensor circuit.
P1183 Fuel Temperature Sensor Circuit High Voltage
High voltage in fuel temperature sensor circuit.
P1253 P1259 VTEC System Malfunction
VTEC (Variable Valve Timing and Lift Electronic Control) system malfunction.
P1297 Electric Load Detector (ELD) Circuit Low Voltage
Low voltage in Electric Load Detector (ELD) circuit.
P1298 Electric Load Detector (ELD) Circuit High Voltage
High voltage in ELD circuit.
P1300 Random Misfire
Redundant listing of random misfire.
P1324 Knock Sensor Power Source Circuit Low Voltage
Low voltage in knock sensor power source circuit.
P1336 Engine Speed (RPM) Fluctuation Sensor Intermittent Interruption
Intermittent interruption from engine speed fluctuation sensor.
P1337 Engine Speed (RPM) Fluctuation Sensor No Signal
No signal from engine speed fluctuation sensor.
P1355 Front Ignition Coil Power Circuit Malfunction
Malfunction in front ignition coil power circuit.
P1359 Crankshaft Position (CKP)/Top Dead Center (TDC) Sensor Circuit Malfunction
Malfunction in CKP/TDC sensor circuit.
P1361 Camshaft Position (CMP) Sensor A (Top Dead Center (TDC) Sensor) Intermittent Interruption
Intermittent interruption from CMP Sensor A (TDC Sensor).
P1361 Top Dead Center (TDC) Sensor Intermittent Interruption
Redundant listing of TDC sensor intermittent interruption.
P1362 Camshaft Position (CMP) Sensor A (Top Dead Center (TDC) Sensor) No Signal
No signal from CMP Sensor A (TDC Sensor).
P1362 Top Dead Center (TDC) Sensor No Signal
Redundant listing of TDC sensor no signal.
P1366 Camshaft Position (CMP) Sensor B (Top Dead Center (TDC) Sensor) Intermittent Interruption
Intermittent interruption from CMP Sensor B (TDC Sensor).
P1366 Top Dead Center (TDC) Sensor 2 Intermittent Interruption
Redundant listing of TDC Sensor 2 intermittent interruption.
P1367 Camshaft Position (CMP) Sensor B (Top Dead Center (TDC) Sensor) No Signal
No signal from CMP Sensor B (TDC Sensor).
P1367 Top Dear Center (TDC) Sensor 2 No Signal
Redundant listing of TDC Sensor 2 no signal.
P1381 Cylinder Position (CYP) Sensor Intermittent Interruption
Intermittent interruption from Cylinder Position (CYP) sensor.
P1382 Cylinder Position (CYP) Sensor No Signal
No signal from CYP sensor.
P1410 Air Pump Malfunction
Redundant listing of air pump malfunction.
P1415 Air Pump Electric Current Sensor Circuit Low Voltage
Low voltage in air pump electric current sensor circuit.
P1416 Air Pump Electric Current Sensor Circuit High Voltage
High voltage in air pump electric current sensor circuit.
P1420 Nox Adsorptive Catalyst System Efficiency Below Threshold
Nox adsorptive catalyst system efficiency below threshold.
P1438 Motor Drive Module (MDM) Overheating Signal Circuit
MDM overheating signal circuit issue.
P1438 Motor Drive Module (MDM) Overheating
Redundant listing of MDM overheating.
P1439 Motor Drive Module (MDM) Short Circuit Sensor Problem
MDM short circuit sensor problem.
P1439 Motor Drive Module (MDM) Short Circuit
Redundant listing of MDM short circuit.
P1440 IMA System Problem
IMA (Integrated Motor Assist) system problem (Hybrid models).
P1445 Bypass Control Problem
Bypass control problem, likely related to hybrid system.
P1448 P1449 Battery Module Overheating
Battery module overheating (Hybrid models).
P1449 Battery Cell Overheating
Battery cell overheating (Hybrid models).
P1449 Battery Module Individual Voltage Input Deviation
Battery module voltage deviation (Hybrid models).
P1449 Battery Module Deterioration
Battery module deterioration (Hybrid models).
P1449 Battery Module Deviation
Redundant listing of battery module deviation (Hybrid models).
P1454 Fuel Tank Pressure (FTP) Sensor Range/Performance Problem
Redundant listing of FTP sensor range/performance issue.
P1456 Evaporative Emissions (EVAP) Control System Leakage (Fuel Tank System)
EVAP system leak in fuel tank system.
P1457 Evaporative Emissions (EVAP) Control System Leakage (EVAP Canister System)
EVAP system leak in EVAP canister system.
P1459 Evaporative Emission (EVAP) Purge Flow Switch Malfunction
EVAP purge flow switch malfunction.
P1491 Exhaust Gas Recirculation (EGR) Valve Insufficient Lift
Redundant listing of EGR valve insufficient lift.
P1486 Cooling System Malfunction
Redundant listing of cooling system malfunction.
P1491 Exhaust Gas Recirculation (EGR) Valve Insufficient Lift
EGR valve insufficient lift.
P1498 Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit High Voltage
High voltage in EGR valve position sensor circuit.
P1505 Positive Crankcase Ventilation (PCV) Air Leakage
PCV air leakage.
P1508 P1519 Idle Air Control Valve (IACV) Circuit Malfunction
IACV circuit malfunction.
P1509 Idle Air Control Valve (IACV) Circuit Failure
IACV circuit failure.
P1522 Brake Booster Pressure Sensor Circuit Low Voltage
Low voltage in brake booster pressure sensor circuit.
P1523 Brake Booster Pressure Sensor Circuit High Voltage
High voltage in brake booster pressure sensor circuit.
P1524 Brake Booster Pressure Sensor Range/Performance Problem
Brake booster pressure sensor range/performance issue.
P1541 Climate Control Unit Signal Circuit Low Voltage
Low voltage in climate control unit signal circuit.
P1542 Climate Control Unit Signal Circuit High Voltage
High voltage in climate control unit signal circuit.
P1565 Motor Commutation Signal Problem
Motor commutation signal problem, likely related to hybrid system.
P1568 Battery Module Individual Voltage Input Problem
Battery module voltage input problem (Hybrid models).
P1568 Battery Module Temperature Signal Circuit Problem
Battery module temperature signal circuit problem (Hybrid models).
P1568 Battery Cell Temperature Signal Circuit Problem
Battery cell temperature signal circuit problem (Hybrid models).
P1572 Motor Drive Module (MDM) Temperature Signal Circuit Low Input
Low input in MDM temperature signal circuit.
P1572 Motor Drive Module (MDM) Temperature Signal Circuit High Input
High input in MDM temperature signal circuit.
P1576 Motor Drive Module (MDM) Voltge Signal Circuit Low Input
Low input in MDM voltage signal circuit.
P1577 High Voltage Detection Signal Circuit Problem
High voltage detection signal circuit problem, likely hybrid system.
P1580 Battery Current Circuit Problem
Battery current circuit problem, likely hybrid system.
P1581 Motor Power Inverter (MPI) Module Current Signal Circuit Low Input
Low input in MPI module current signal circuit.
P1581 Motor Power Inverter (MPI) Module Current Signal Circuit High Input
High input in MPI module current signal circuit.
P1581 Motor Power Inverter (MPI) Module Current Signal Circuit Problem
Redundant listing of MPI module current signal circuit problem.
P1582 Motor Current U Phase Signal Circuit Low Input
Low input in motor current U phase signal circuit.
P1582 Motor Current U Phase Signal Circuit High Input
High input in motor current U phase signal circuit.
P1583 Motor Current V Phase Signal Circuit Low Input
Low input in motor current V phase signal circuit.
P1583 Motor Current V Phase Signal Circuit High Input
High input in motor current V phase signal circuit.
P1584 Motor Current W Phase Signal Circuit Low Input
Low input in motor current W phase signal circuit.
P1584 Motor Current W Phase Signal Circuit High Input
High input in motor current W phase signal circuit.
P1585 Motor Current Signal Circuit Problem
Motor current signal circuit problem, likely hybrid system.
P1586 Motor Power Inverter (MPI) Module Current Signal/Battery Current Signal Circuit Problem
MPI module current/battery current signal circuit problem.
P1607 Engine Control Module (ECM)/Powertrain Control Module (PCM) Internal Circuit Malfunction
ECM/PCM internal circuit malfunction.
P1630 Transmission Control Module
Transmission Control Module (TCM) problem.
P1635 Battery Condition Monitor (BCM) Module Proble
Battery Condition Monitor (BCM) module problem.
P1639 MOTB Signal Circuit Malfunction
MOTB signal circuit malfunction, likely hybrid system.
P1640 ACTTRQ Motor Torque Signal Circuit Low Input
Low input in ACTTRQ motor torque signal circuit.
P1641 ACTTRQ Motor Torque Signal Circuit High Input
High input in ACTTRQ motor torque signal circuit.
P1642 QBATT Battery Signal Circuit Low Input
Low input in QBATT battery signal circuit.
P1643 QBATT Battery Signal Circuit High Input
High input in QBATT battery signal circuit.
P1644 MOTFSA Signal Malfunction
MOTFSA signal malfunction, likely hybrid system.
P1645 MOTFSB Signal Malfunction
MOTFSB signal malfunction, likely hybrid system.
P1646 MOTSTB Signal Malfunction
MOTSTB signal malfunction, likely hybrid system.
P1647 Power Command Signal Circuit Low Input
Low input in power command signal circuit.
P1647 Power Command Signal Circuit High Input
High input in power command signal circuit.
P1647 Engine Torque Signal Circuit Low Input
Redundant listing of power command signal circuit codes.
P1647 Engine Torque Signal Circuit High Input
Redundant listing of power command signal circuit codes.
P1647 Mode Signal Circuit 1 Low Input
Redundant listing of power command signal circuit codes.
P1647 Mode Signal Circuit 1 High Input
Redundant listing of power command signal circuit codes.
P1647 Mode Signal Circuit 2 Problem
Redundant listing of power command signal circuit codes.
P1647 Engine Speed Signal Circuit Problem
Redundant listing of power command signal circuit codes.
P1648 Battery Condition Monitor (BCM) Module Communication Signal Circuit Problem
BCM module communication signal circuit problem.
P1648 Motor Control Module (MCM) Communication Signal Circuit Problem
MCM communication signal circuit problem, likely hybrid system.
P1655 CVT-FI TMA/TMB Signal Line Failure
CVT-FI TMA/TMB signal line failure (CVT transmission models).
P1656 Problem in PCM-toVTM-4 Control Unit Communications Circuit
PCM-toVTM-4 control unit communication issue (VTM-4 all-wheel drive system).
P1660 A/T-FI Data Line Failure/TCM – ECM Halt
A/T-FI data line failure/TCM-ECM halt.
P1676 P1678 FPTDR Signal Line Failure
FPTDR signal line failure, function unclear.
P1679 RSCD Signal Circuit Malfunction
RSCD signal circuit malfunction, function unclear.
P1681 A/T FI Signal A Cicuit Low Voltage
Low voltage in A/T FI Signal A circuit.
P1682 A/T FI Signal A Circuit High Voltage
High voltage in A/T FI Signal A circuit.
P1683 Throttle Valve Default Position Spring Performance Problem
Throttle valve default position spring performance issue.
P1684 Throttle Valve Return Spring Performance Problem
Throttle valve return spring performance issue.
P1686 A/T FI Signal B Circuit Low Voltage
Low voltage in A/T FI Signal B circuit.
P1687 A/T FI Signal B Circuit High Voltage
High voltage in A/T FI Signal B circuit.
P1705 Short in Transmission Range Switch Circuit (More than one range position is on at the same time)
Short circuit in transmission range switch, multiple positions detected.
P1706 Open in Transmission Range Switch Circuit
Open circuit in transmission range switch.
P1709 Problem Transmission Gear Selection Switch Circuit
Problem in transmission gear selection switch circuit.
P1730 Problem in Shift Control System: Shift Solenoid Valve A and D Stuck OFF Shift Solenoid Valve B Stuck ON Shift Valves A, B, and D Stuck
Complex shift control system problem with multiple solenoid valves.
P1731 Problem in Shift Control System: Shift Solenoid Valve E Stuck ON Shift Valve E Stuck A/T Clutch Pressure Control Solenoid Valve A Stuck OFF
Complex shift control system problem with multiple solenoid valves.
P1732 Problem in Shift Control System: Shift Solenoid Valve B and C Stuck ON Shift Valves B and C Stuck
Complex shift control system problem with multiple solenoid valves.
P1733 Problem in Shift Control System: Shift Solenoid Valve D Stuck ON Shift Valve D Stuck A/T Clutch Pressure Control Solenoid Valve C Stuck OFF
Complex shift control system problem with multiple solenoid valves.
P1734 Problem in Shift Control System: Shift Solenoid Valves B and C Stuck ON Shift Valves B and C Stuck
Redundant listing of P1732.
P1738 Problem in 2nd Clutch Pressure Switch Circuit
Problem in 2nd clutch pressure switch circuit.
P1739 Problem in 3rd Clutch Pressure Switch Circuit
Problem in 3rd clutch pressure switch circuit.
P1740 Problem in 4th Clutch Pressure Switch Circuit
Problem in 4th clutch pressure switch circuit.
P1750 Mechanical Problem in Hydraulic Control System of A/T Clutch Pressure Control Solenoid Valve Assemblies A and B, or Problem in the Hydraulic Control System
Mechanical problem in hydraulic control system related to solenoid valves A and B.
P1751 Mechanical Problem in Hydraulic Control System of Shift Solenoid Valve B and A/T Clutch Pressure Control Solenoid Valves A and B, or Problem in the Hydraulic Control System
Mechanical problem in hydraulic control system related to solenoid valves.
P1753 Problem in Torque Converter Clutch Solenoid Valve Circuit
Redundant listing of torque converter clutch solenoid valve circuit problem.
P1751 P1768 Problem in Torque Converter Clutch Solenoid Valve B Circuit
Problem in torque converter clutch solenoid valve B circuit.
P1773 Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit
Redundant listing of A/T clutch pressure control solenoid valve B circuit problem.
P1790 Throttle Position (TP) Sensor Circuit Malfunction
Throttle Position (TP) sensor circuit malfunction.
P1791 Vehicle Speed Sensor (VSS) Range/Performance Problem
Redundant listing of VSS range/performance issue.
P1792 Problem in Engine Coolant Temperature (ECT) Sensor Circuit
Problem in ECT sensor circuit.
P1793 Manifold Absolute Pressure Sensor Circuit
MAP sensor circuit problem.
P1870 Problem in CVT Speed Change Control Valve Assembly Circuit
CVT speed change control valve assembly circuit problem (CVT models).
P1873 Problem in CVT Pulley Pressure Control Valve Assembly Circuit
CVT pulley pressure control valve assembly circuit problem (CVT models).
P1879 Problem in CVT Start Clutch Pressure Control Valve Assembly Circuit
CVT start clutch pressure control valve assembly circuit problem (CVT models).
P1882 Problem in Inhibitor Solenoid Circuit
Inhibitor solenoid circuit problem.
P1884 Secondary Gear Speed Sensor 2 Circuit Malfunction
Secondary gear speed sensor 2 circuit malfunction.
P1885 CVT Drive Pulley Speed Sensor Circuit
CVT drive pulley speed sensor circuit (CVT models).
P1886 CVT Driven Pulley Speed Sensor Circuit
CVT driven pulley speed sensor circuit (CVT models).
P1888 CVT Speed Sensor
CVT speed sensor problem (CVT models).
P1889 Problem in CVT Speed Sensor 2 Circuit
CVT speed sensor 2 circuit problem (CVT models).
P1890 Shift Control System
Shift control system problem.
P1891 Problem in Start Clutch System
Start clutch system problem, likely CVT models.
P1894 CVT Speed Change Control Valve Circuit
CVT speed change control valve circuit problem (CVT models).
P1895 CVT Pulley Pressure Control Valve Circuit
CVT pulley pressure control valve circuit problem (CVT models).

P2000 – P2999: Powertrain DTCs (Fuel and Air Metering, Auxiliary Emission Controls)

P2101 Throttle Actuator System Malfunction
Throttle actuator system malfunction.
P2108 Throttle Actuator Control Module Problem
Throttle actuator control module problem.
P2118 Throttle Actuator Current Range/Performance Problem
Throttle actuator current range/performance issue.
P2122 Accelerator Pedal Position (APP) Sensor 1 (Throttle Position Sensor D) Circuit Low Voltage
Low voltage in APP Sensor 1 (TPS D) circuit.
P2123 Accelerator Pedal Position (APP) Sensor 1 (Throttle Position Sensor D) Circuit High Voltage
High voltage in APP Sensor 1 (TPS D) circuit.
P2127 Accelerator Pedal Position (APP) Sensor 2 (Throttle Position Sensor E) Circuit Low Voltage
Low voltage in APP Sensor 2 (TPS E) circuit.
P2128 Accelerator Pedal Position (APP) Sensor 2 (Throttle Position Sensor E) Circuit High Voltage
High voltage in APP Sensor 2 (TPS E) circuit.
P2135 Throttle Position (TP) Sensor 1/2 Incorrect Voltage Correlation
Incorrect voltage correlation between TP Sensor 1 and 2.
P2138 Accelerator Pedal Position (APP) Sensor 1/2 (Throttle Position Sensor D/E) Incorrect Voltage Correlation
Incorrect voltage correlation between APP Sensor 1 and 2 (TPS D/E).
P2176 Throttle Actuator Control System Idle Position Not Learned
Throttle actuator control system idle position not learned.
P2195 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Signal Stuck Lean
A/F sensor (Sensor 1) signal stuck lean.
P2197 Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Signal Stuck Lean
A/F sensor (Bank 2, Sensor 1) signal stuck lean (if applicable).
P2227 Barometric Pressure (BARO) Sensor Circuit Range/Performance Problem
Redundant listing of BARO sensor range/performance issue.
P2228 Barometric Pressure (BARO) Sensor Circuit Low Voltage
Redundant listing of low voltage in BARO sensor circuit.
P2229 Barometric Pressure (BARO) Sensor Circuit High Voltage
Redundant listing of high voltage in BARO sensor circuit.
P2237 Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP Line High Voltage
High voltage in rear A/F sensor (Bank 1, Sensor 1) IP line.
P2238 Air/Fuel Ratio (A/F) Sensor (Sensor 1) AFS+ Line Low Voltage
Redundant listing of low voltage in A/F sensor (Sensor 1) AFS+ line.
P2238 Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP Line Low Voltage
Low voltage in rear A/F sensor (Bank 1, Sensor 1) IP line.
P2240 Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Line High Voltage
High voltage in front A/F sensor (Bank 2, Sensor 1) IP line (if applicable).
P2241 Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Line Low Voltage
Low voltage in front A/F sensor (Bank 2, Sensor 1) IP line (if applicable).
P2243 Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Line High Voltage
High voltage in rear A/F sensor (Bank 1, Sensor 1) VCENT line.
P2245 Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Line Low Voltage
Low voltage in rear A/F sensor (Bank 1, Sensor 1) VCENT line.
P2247 Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Line High Voltage
High voltage in front A/F sensor (Bank 2, Sensor 1) VCENT line (if applicable).
P2249 Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Line Low Voltage
Low voltage in front A/F sensor (Bank 2, Sensor 1) VCENT line (if applicable).
P2251 Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Line High Voltage
High voltage in rear A/F sensor (Bank 1, Sensor 1) VS line.
P2252 Air/Fuel Ratio (A/F) Sensor (Sensor 1) AFS- Line Low Voltage
Redundant listing of low voltage in A/F sensor (Sensor 1) AFS- line.
P2254 Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VS Line High Voltage
High voltage in front A/F sensor (Bank 2, Sensor 1) VS line (if applicable).
P2255 Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VS Line Low Voltage
Low voltage in front A/F sensor (Bank 2, Sensor 1) VS line (if applicable).
P2279 Intake Air System Leak
Intake air system leak.
P2413 Exhaust Gas Recirculation (EGR) System Range/Performance Problem
Redundant listing of EGR system range/performance issue.
P2422 Evaporative Emission (EVAP) System Vent Shut Valve Close Malfunction
EVAP system vent shut valve close malfunction.
P2552 Throttle Actuator Control Module Relay Malfunction
Throttle actuator control module relay malfunction.
P2627 Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) LABEL Circuit Low Voltage
Low voltage in rear A/F sensor (Bank 1, Sensor 1) LABEL circuit.
P2628 Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) LABEL Circuit High Voltage
High voltage in rear A/F sensor (Bank 1, Sensor 1) LABEL circuit.
P2630 Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) LABEL Circuit Low Voltage
Low voltage in front A/F sensor (Bank 2, Sensor 1) LABEL circuit (if applicable).
P2631 Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) LABEL Circuit High Voltage
High voltage in front A/F sensor (Bank 2, Sensor 1) LABEL circuit (if applicable).
P2646 VTEC Oil Pressure Switch Circuit Low Voltage
Low voltage in VTEC oil pressure switch circuit.
P2647 VTEC Oil Pressure Switch Circuit High Voltage
High voltage in VTEC oil pressure switch circuit.
P2648 VTEC Solenoid Valve Circuit Low Voltage
Low voltage in VTEC solenoid valve circuit.
P2649 VTEC Solenoid Valve Circuit High Voltage
High voltage in VTEC solenoid valve circuit.
P2769 Short in Torque Converter Clutch Solenoid Valve Circuit
Short circuit in torque converter clutch solenoid valve circuit.
P2770 Open in Torque Converter Clutch Solenoid Valve Circuit
Open circuit in torque converter clutch solenoid valve circuit.
P2A00 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem
Redundant listing of A/F sensor range/performance issue.
P2A03 Front A/F Sensor Circuit (Bank 2, Sensor 1) Circuit Range/Performance Problem
A/F sensor circuit range/performance issue in Bank 2 (if applicable).

U0001 – U0999: Network Communication

U0073 FCAN Malfunction (Bus-off)
FCAN (Fault-tolerant CAN) malfunction, bus-off condition.
U0107 Lost Communication With Throttle Actuator Control Module
Lost communication with throttle actuator control module.
U0121 FCAN Malfunction (TCS-PCM)
FCAN malfunction in TCS-PCM communication (Traction Control System – Powertrain Control Module).
U0155 FCAN Malfunction (Gauge Control Module-ECM/PCM)
FCAN malfunction in Gauge Control Module-ECM/PCM communication.

This comprehensive guide to Honda CRV OBD2 codes should help you better understand any check engine light issues you might encounter. Remember to use an OBD2 scanner to retrieve the codes and consult this list for potential meanings. For accurate diagnosis and repair, it is always recommended to consult a certified mechanic.

Honda CRV OBD2 Codes: A Comprehensive Guide to Understanding Your Check Engine Light

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