For car enthusiasts and professional mechanics alike, understanding what’s happening under the hood is crucial. Modern vehicles are complex systems, and accessing real-time data is no longer a luxury, but a necessity for effective diagnostics and maintenance. If you’re searching for a “Bluedriver Bluetooth Pro Obd2 C Near Me”, you’re likely on the path to unlocking this power. The BlueDriver Bluetooth Pro OBD2 Scanner is a game-changer, offering unparalleled insight into your vehicle’s operation through comprehensive live data parameters.
This article delves into the vast array of standard OBDII live data points accessible with BlueDriver, empowering you to understand your vehicle’s health in detail. While specific vehicle support may vary depending on the year and model, BlueDriver’s compatibility tool ensures you know exactly what data your car provides. Let’s explore the parameters that BlueDriver unlocks, categorized for easy navigation:
Decoding Vehicle Operation Parameters with BlueDriver
The “Vehicle Operation” category within BlueDriver provides fundamental insights into your engine and vehicle’s real-time status. These parameters are essential for understanding the core mechanics at play.
Engine Performance Monitoring
Engine RPM: Perhaps the most fundamental parameter, Engine RPM (Revolutions Per Minute) displays the rotational speed of your engine’s crankshaft. This is a primary indicator of engine activity and is crucial for diagnosing issues related to idling, acceleration, and overall engine performance.
Vehicle Speed: Straightforward yet vital, Vehicle Speed shows your car’s current speed. While your speedometer displays this information, accessing it through OBDII data can be helpful for cross-referencing and ensuring sensor accuracy, especially when troubleshooting speed-related issues.
Engine Coolant Temperature: Monitoring Engine Coolant Temperature is essential for preventing overheating. This parameter reflects the temperature of the coolant, typically measured at the cylinder head or before the radiator. BlueDriver may also report a second coolant temperature sensor (ECT 2) on some vehicles, providing even more detailed thermal insights. Consulting your vehicle’s manual or parts diagram can clarify the location of multiple sensors.
Engine Oil Temperature: Engine Oil Temperature is another critical thermal parameter. The sensor’s location varies by vehicle, often near the oil filter, but this data point helps ensure your engine oil is within its optimal operating range, contributing to engine longevity and performance.
Ambient Air Temperature: Ambient Air Temperature reflects the air temperature surrounding your vehicle. This is typically slightly lower than the intake temperature and is a factor in engine performance calculations, as air density changes with temperature.
Barometric Pressure: Barometric Pressure, or atmospheric pressure, is displayed as an absolute value. Typically around 101.3 kPa or 14.7 psi at sea level, this reading varies with altitude and local weather conditions. It’s a baseline environmental reading that can influence engine performance and sensor readings.
Accelerator and Throttle Position
Accelerator Pedal Position: This parameter reveals the driver’s input through the accelerator pedal. BlueDriver may display readings from up to three accelerator pedal position sensors (Accelerator Pedal Position D, E, and F), offering redundancy and accuracy in capturing driver intent.
Relative Accelerator Pedal Position: Relative Accelerator Pedal Position adjusts for the vehicle’s learned driving behavior over time. Due to scaling, it might not always reach 100% when the pedal is floored. This value can also represent an average of multiple sensors, providing a refined interpretation of driver input.
Commanded Throttle Actuator: The Commanded Throttle Actuator reflects the throttle position requested by the Engine Control Module (ECM) based on the accelerator pedal position. This parameter shows the computer’s intended throttle opening in response to the driver’s acceleration input.
Relative Throttle Position: Relative Throttle Position indicates the throttle position relative to the “learned” closed position. Carbon buildup and other factors can alter throttle behavior over time. This parameter compensates for such changes, showing 0% even if the absolute throttle position is slightly open due to these factors.
Absolute Throttle Position: Absolute Throttle Position shows the actual degree of throttle valve opening, from 0% (fully closed) to 100% (fully open). Vehicles may have up to four throttle position sensors (TPS A/1, B/2, C/3, D/4), ensuring precise throttle control and monitoring.
Electrical and Hybrid System Data
Control Module Voltage: Control Module Voltage displays the input voltage at the Engine Control Module (ECM). With the engine off and ignition on, it shows battery voltage. With the engine running, it reflects the alternator voltage, providing insight into the vehicle’s electrical system health.
Hybrid Battery Pack Remaining Life: Also known as State of Charge (SOC), this parameter shows the remaining charge percentage in a hybrid vehicle’s battery pack. It’s a crucial indicator of hybrid battery health and range, although individual cell data is not accessible through standard OBDII.
Hybrid/EV Vehicle System Status: This parameter provides detailed status information for hybrid and electric vehicles, including:
- Hybrid/EV Charging State: Indicates whether the vehicle is in Charge Sustaining Mode (CSM), maintaining battery charge, or Charge Depletion Mode (CDM), lowering the State of Charge. Non-PHEVs will always display CSM.
- Hybrid/EV Battery Voltage: Displays the battery voltage, ranging from 0 to 1024V.
- Hybrid/EV Battery Current: Shows battery current, from -3300 to 3300 Amps. A negative value indicates battery charging.
Engine Load and Torque
Calculated Engine Load Value: Calculated Engine Load Value represents the percentage of maximum available engine torque being produced. 100% indicates Wide Open Throttle (WOT), while 0% signifies key on engine off. This parameter reflects how hard the engine is working.
Absolute Load Value: Absolute Load Value is a normalized value representing air mass intake per intake stroke as a percentage. It’s calculated relative to air mass at 100% throttle under standard temperature and pressure. Naturally aspirated engines typically range from 0 to 95%, while turbo/supercharged engines can reach up to 400%.
Driver’s Demand Engine – Percent Torque: This parameter shows the percentage of maximum available engine torque requested by the ECM based on accelerator pedal position, cruise control, and transmission inputs. External factors like traction control do not influence this value.
Actual Engine – Percent Torque: Also known as Indicated Torque, Actual Engine – Percent Torque displays the current percentage of total available engine torque, including brake torque and the “friction” torque required to run the engine at no load.
Engine Friction – Percent Torque: Engine Friction – Percent Torque represents the percentage of maximum engine torque needed to overcome internal engine friction and operate ancillary components like the water pump, alternator, and emissions control equipment at no load. It excludes power steering, AC compressors, and braking systems.
Engine Reference Torque: Engine Reference Torque is the factory-set torque rating of the engine, considered the 100% value for torque-related parameters. It’s important to note that this value doesn’t change over time due to wear, upgrades, or tuning.
Engine Percent Torque Data: Engine Percent Torque Data addresses situations where vehicle or environmental conditions can alter the reference torque. It can specify up to five different maximum torque ratings, each numbered 1 through 5, though the reason for the change isn’t reported directly and may require a factory manual to interpret.
Auxiliary and Exhaust System Parameters
Auxiliary Input/Output: Auxiliary Input/Output is a composite parameter that, if supported, reports:
- Power Take Off Status: On or Off.
- Automatic Transmission Status: Park/Neutral or Drive/Reverse.
- Manual Transmission Neutral Status: Neutral/Clutch In or In Gear.
- Glow Plug Lamp Status: Indicator On or Off.
- Recommended Transmission Gear: 1 through 15.
Support for this parameter is relatively uncommon; transmission status is often found in enhanced live data.
Exhaust Gas Temperature (EGT): Exhaust Gas Temperature (EGT) can report temperatures for each exhaust bank at various points:
- Sensor #1 – Post-turbo.
- Sensor #2 – Post-cat.
- Sensor #3 – Post-DPF (Diesel Particulate Filter).
- Sensor #4 – Possibly after NOx control equipment.
Specific sensor locations may vary; consult your vehicle’s factory manual.
Engine Exhaust Flow Rate: Engine Exhaust Flow Rate measures exhaust flow in kg/hr or lbs/hr upstream of the aftertreatment system, averaged over the last 1000ms.
Exhaust Pressure: Exhaust Pressure is displayed as an absolute pressure value. Engine off, it should read roughly ambient atmospheric pressure. It may report data from one or two exhaust banks; refer to your factory manual for sensor locations.
Manifold Surface Temperature: Manifold Surface Temperature reflects the temperature on the outer surface of the exhaust manifold.
Timing Advance for #1 cylinder: Timing Advance for #1 cylinder shows the spark plug firing angle for cylinder #1 in degrees before Top Dead Center (BTDC). Negative values indicate firing after TDC, while positive values are before TDC.
Run Time and Distance Parameters
Engine Run Time: Engine Run Time reports several time-related parameters:
- Total engine run time in seconds.
- Total engine idle time in seconds (defined by no throttle input, low RPM, inactive PTO, and low vehicle speed).
- Total run time with PTO engaged (if equipped).
Run Time Since Engine Start: Run Time Since Engine Start simply tracks the run time in seconds since the engine was last started.
Time Run with MIL On: Time Run with MIL On measures engine run time since the Check Engine Light (MIL) was activated. It stops increasing at 65,535 minutes (roughly 45 engine-days) and continues even on hybrids or vehicles with auto Stop/Start as long as the ignition is on.
Distance Traveled while MIL is Activated: Distance Traveled while MIL is Activated tracks the distance driven since the Check Engine Light illuminated. It resets when codes are cleared or the battery is disconnected.
Time since Trouble Codes Cleared: Time since Trouble Codes Cleared measures engine run time since codes were last cleared. It also stops increasing at 65,535 minutes and continues with ignition on for hybrids/Stop-Start vehicles.
Distance Traveled Since Codes Cleared: Distance Traveled Since Codes Cleared tracks distance driven since engine codes were cleared. Clearing non-engine codes does not reset this value.
Warm-ups Since Codes Cleared: Warm-ups Since Codes Cleared counts engine warm-up cycles since codes were last cleared. A warm-up cycle is defined by a coolant temperature increase of at least 22°C/40°F after startup, reaching at least 70°C/170°F (or 60°C/140°F for diesel). The counter stops at 255. Clearing non-engine codes does not reset this value.
Fuel & Air Data: Optimizing Combustion with BlueDriver
The “Fuel & Air” category provides vital parameters for understanding and optimizing your engine’s combustion process. These data points are critical for fuel efficiency, performance, and emissions control.
Fuel System Monitoring
Fuel System Status: Fuel System Status indicates whether your vehicle is running in ‘open’ or ‘closed’ loop mode. Open loop uses pre-programmed air-fuel ratios, while closed loop uses oxygen sensor feedback for adjustments. BlueDriver reports status for two fuel systems (A & B), representing distinct systems like CNG & diesel on one vehicle, not bank numbers. Most passenger vehicles will only use system A.
Oxygen Sensor Voltage: Oxygen Sensor Voltage readings are crucial for air-fuel ratio diagnostics. (For detailed interpretation, refer to “How are O2 Sensors Displayed?” and “Walker’s O2 Sensor Training Guide“).
Oxygen Sensor Equivalence Ratio: Oxygen Sensor Equivalence Ratio, also known as Lambda, is another key O2 sensor parameter. (See “How are O2 Sensors Displayed?”).
Oxygen Sensor Current: Similar to voltage, Oxygen Sensor Current provides air-fuel ratio information. 0mA indicates a balanced mixture, positive current lean, and negative current rich. (See “How are O2 Sensors Displayed?”).
Short Term Fuel Trim: Short Term Fuel Trim reflects rapid fuel injection adjustments based on O2 sensor data. Negative trim indicates a rich condition (reducing fuel), positive trim lean (increasing fuel). Bank number indicates engine side, Sensor 1 is pre-catalytic converter, and Sensor 2 is post-catalytic converter. Short-term trim works with long-term trim for net injection correction. (Note on 99.2% fuel trim).
Long Term Fuel Trim: Long Term Fuel Trim is similar to short-term trim but reacts slower, representing learned behavior over time. Bank and sensor numbers are interpreted similarly. (Note on 99.2% fuel trim).
Image showing long term fuel trim data displayed in the BlueDriver app, highlighting the real-time data visualization capabilities for fuel system diagnostics.
Commanded Equivalence Ratio: Commanded Equivalence Ratio is the fuel-air ratio requested by the ECM, displayed as a lambda value (>1 lean, <1 rich, ~1 ideal). Vehicles with wide-range O2 sensors display this in both open and closed loop. Conventional O2 sensor vehicles show it only in open loop, displaying 1.0 in closed loop.
Air Intake and Pressure Monitoring
Mass Air Flow Rate: Mass Air Flow (MAF) Rate measures intake airflow in g/s or lb/min. On turbocharged vehicles, the MAF sensor is located upstream of the turbocharger.
Intake Air Temperature: Intake Air Temperature (IAT) measures the temperature of intake air. Turbocharged vehicles may have two IAT sensors: #1 before and #2 after the turbo. Some vehicles with dual intakes may report data for banks 1 and 2. IAT should be slightly above ambient air temperature in normal operation.
Intake Manifold Absolute Pressure: Intake Manifold Absolute Pressure (MAP) measures pressure inside the intake manifold. For turbocharged applications, it’s pressure after the turbo/intercooler. It’s an absolute pressure value. At idle, it’s slightly below ambient pressure, at key on/engine off, it’s ambient. To get gauge pressure, subtract atmospheric pressure.
Fuel Pressure (Gauge): Fuel Pressure (Gauge) is the fuel pressure value, as a gauge value (0 indicates atmospheric pressure).
Fuel Rail Pressure: Fuel Rail Pressure is the pressure in the fuel rail, displayed as a gauge value.
Fuel Rail Pressure (Absolute): Fuel Rail Pressure (Absolute) is the pressure in the fuel rail, displayed as an absolute pressure value. It shows ambient pressure when the fuel rail is not pressurized.
Fuel Rail Pressure (relative to manifold vacuum): Fuel Rail Pressure (relative to manifold vacuum) provides fuel pressure relative to the intake manifold vacuum.
Fuel Composition and Consumption
Alcohol Fuel %: Alcohol Fuel % indicates the ethanol/alcohol content measured by the engine computer as a percentage. E85 blend would show 85%.
Fuel Level Input: Fuel Level Input is the percentage of maximum fuel tank capacity remaining.
Engine Fuel Rate: Engine Fuel Rate is the near-instantaneous fuel consumption rate in Liters or Gallons per hour, calculated by the ECM based on fuel used in the last 1000ms. It doesn’t include fuel consumed by diesel aftertreatment.
Cylinder Fuel Rate: Cylinder Fuel Rate is the calculated fuel injected per cylinder per intake stroke, in mg/stroke.
Fuel System Percentage Use: Fuel System Percentage Use displays the percentage of total fuel usage per cylinder bank (up to four banks). It can show data for two separate fuel systems (diesel & CNG) if supported.
Fuel Injection Timing: Fuel Injection Timing is the crankshaft angle (degrees BTDC) at which fuel injection begins. Positive angles are before TDC, negative after TDC.
Fuel System Control: Fuel System Control reports status for diesel fuel systems 1 & 2 (if supported), including:
- Fuel pressure control: Closed or open loop.
- Fuel injection quantity: Closed or open loop.
- Fuel injection timing: Closed or open loop.
- Idle fuel balance/contribution: Closed or open loop.
Closed loop indicates sensor feedback is used for fine-tuning. Systems 1 & 2 refer to separate fuel systems, system 2 may be unused on most vehicles.
Fuel Pressure Control System: Fuel Pressure Control System displays data for up to two fuel rails:
- Commanded rail pressure.
- Actual rail pressure.
- Temperature.
Pressure is reported as gauge pressure.
Injection Pressure Control System: Injection Pressure Control System (diesel) monitors oil pressure in high-pressure oil injection systems (HEUI). It displays:
- Commanded Control Pressure Rail A.
- Actual Pressure Rail A.
- Commanded Control Pressure Rail B.
- Actual Pressure Rail B.
Turbocharger and Boost Parameters
Boost Pressure Control: Boost Pressure Control displays data for one or two turbochargers:
- ECM commanded boost pressure.
- Actual boost pressure.
Data is in absolute pressure. Gauge pressure is absolute pressure minus atmospheric pressure. It also reports boost control system operating mode: Open Loop, Closed Loop, or Fault Present.
Turbocharger RPM: Turbocharger RPM measures turbine RPM of one or both turbos. Maximum value is 655,350 rpm.
Turbocharger Temperature: Turbocharger Temperature reports data for one or two turbos:
- Compressor inlet temperature (pre-turbo).
- Compressor outlet temperature (post-turbo).
- Turbine inlet temperature (pre-turbine).
- Turbine outlet temperature (post-turbine).
Charge air temperatures range from -40 to 215°C, exhaust temperatures -40 to 6513.5°C.
Turbocharger Compressor Inlet Pressure Sensor: Turbocharger Compressor Inlet Pressure Sensor measures pressure at the turbo inlet for one or two turbos. It’s an absolute pressure value.
Variable Geometry Turbo (VGT) Control: Variable Geometry Turbo (VGT) Control data relates to vane position in VGTs:
- Commanded VGT Position (vane position requested).
- Actual VGT Vane Position.
- VGT Control Status: Closed or Open Loop, or Fault State.
0% vane position is maximum bypass, 100% redirects maximum exhaust gas.
Wastegate Control: Wastegate Control data for electronic wastegate systems:
- Commanded wastegate position (0% fully closed, 100% maximum bypass).
- Actual wastegate position (0% to 100%).
Charge Air Cooler Temperature (CACT): Charge Air Cooler Temperature (CACT) measures intercooler air charge temperature with up to four sensors:
- Bank 1 Sensor 1.
- Bank 1 Sensor 2.
- Bank 2 Sensor 1.
- Bank 2 Sensor 2.
Sensor mapping may require factory manual consultation.
Emissions Control Equipment Information: Monitoring Environmental Performance with BlueDriver
The “Emissions Control” category in BlueDriver provides critical data for monitoring and diagnosing your vehicle’s emissions systems, ensuring environmental compliance and optimal engine operation.
Exhaust Gas Recirculation (EGR) System
Commanded EGR: Commanded EGR shows the requested opening percentage of the Exhaust Gas Recirculation (EGR) valve by the engine computer (0% fully closed, 100% fully open).
EGR Error: EGR Error is the percentage difference between commanded and actual EGR valve opening. Special note: if commanded EGR is 0%, EGR error will read 99.2% if actual EGR is not 0%, indicating “undefined” or not applicable. EGR error is calculated as (actual – commanded)/commanded.
Commanded Diesel Intake Air Flow Control: Commanded Diesel Intake Air Flow Control, also known as EGR Throttle, is used in some newer diesels to create intake vacuum for EGR. It displays:
- Commanded position of intake air flow throttle plate (closed to 100% open).
- Actual position of EGR throttle.
- Commanded position of secondary EGR throttle (if fitted).
- Actual position of secondary EGR throttle.
Exhaust Gas Recirculation Temperature: Exhaust Gas Recirculation Temperature reports up to four EGR temperature values:
- EGRTA – Bank 1 Pre-Cooler.
- EGRTB – Bank 1 Post-Cooler.
- EGRTC – Bank 2 Pre-Cooler.
- EGRTD – Bank 2 Post-Cooler.
Evaporative Emission (EVAP) System
EVAP System Vapor Pressure: EVAP System Vapor Pressure is the gauge pressure of the Evaporative Emission (EVAP) system, measured from a sensor in the fuel tank or EVAP line. Sensor location may require factory manual or parts diagram reference.
Absolute Evap System Vapor Pressure: Absolute Evap System Vapor Pressure is the absolute pressure of the EVAP system. It’s an absolute pressure measurement; 14.7 psi or 101.3 kPa indicates 0 gauge pressure.
Commanded Evaporative Purge: Commanded Evaporative Purge is the EVAP purge flow rate requested by the engine computer (0% fully closed, 100% maximum).
Catalytic Converter and Aftertreatment
Catalyst Temperature: Catalyst Temperature measures the temperature of the catalytic converter. Bank # indicates engine side, Sensor # indicates pre (#1) or post (#2) cat.
Diesel Aftertreatment Status: Diesel Aftertreatment Status provides information on Diesel Particulate Filter (DPF) regeneration and NOx adsorber systems:
- Current DPF Regeneration Status: Active/Not Active.
- Current DPF Regeneration Type: Passive/Active.
- NOx Adsorber Regen Status: Active/Not Active.
- NOx Adsorber Desulferization Status: Active/Not Active.
- Normalized Trigger for DPF Regen: Percentage until next regen (0% = regen completed, 100% = regen about to start).
- Average Time Between DPF Regens: Exponential weighted moving average time between regens (last 6 events).
- Average Distance Between DPF Regens: Exponential weighted moving average distance between regens (last 6 events).
Diesel Exhaust Fluid Sensor Data: Diesel Exhaust Fluid (DEF) Sensor Data reports:
- DEF Type: Urea too high/low, Straight diesel, Proper DEF, Sensor fault.
- DEF Concentration: Urea concentration (should be ~32.5% for proper DEF).
- DEF Tank Temperature.
- DEF Tank Level (may not be progressive; see “NOx Control System”).
Diesel Particulate Filter (DPF): Diesel Particulate Filter (DPF) data points:
- Inlet pressure.
- Outlet pressure.
- Differential pressure across the filter.
Increased differential pressure indicates soot accumulation. Bank 1 vs 2 indicates engine side.
Diesel Particulate Filter (DPF) Temperature: Diesel Particulate Filter (DPF) Temperature reports:
- Inlet temperature.
- Outlet temperature.
For each exhaust bank (Bank 1 vs 2).
NOx Control and Particulate Matter Monitoring
NOx Sensor: NOx Sensor reports NOx concentration levels in ppm for:
- Bank 1 Sensor 1.
- Bank 1 Sensor 2.
- Bank 2 Sensor 1.
- Bank 2 Sensor 2.
Bank # indicates engine side, Sensor # indicates before (#1) or after (#2) NOx adsorber.
NOx Control System: NOx Control System data on NOx adsorption:
- Average Reagent Consumption Rate (over 48 hours or last 15L consumed).
- Average Demanded Consumption Rate (over 48 hours or last 15L consumed).
- Reagent Tank Level (0-100%, may not be progressive).
- NOx Warning Indicator Time (engine run time since NOx/SCR warning light activation).
NOx Sensor Corrected Data: NOx Sensor Corrected Data is NOx concentration in PPM with learned adjustments and offsets.
NOx NTE Control Area Status: NOx “not to exceed control area” status:
- Vehicle operating inside or outside NOx control area.
- Vehicle operating inside manufacturer exception/”carve-out” region.
- Vehicle experiencing NTE related deficiency within NOx control area.
PM Sensor Bank 1 & 2: PM Sensor Bank 1 & 2 data:
- Particulate matter sensor active: yes/no.
- Particulate matter sensor regenerating: yes/no.
- Particulate matter sensor value: 0% (clean) to 100% (regen required).
Particulate Matter (PM) Sensor: Particulate Matter (PM) Sensor measures soot concentration in mg/m3 for banks 1 & 2.
PM NTE Control Area Status: PM “not to exceed control area” status:
- Vehicle operating inside or outside PM control area.
- Vehicle operating inside manufacturer exception/”carve-out” region.
- Vehicle experiencing NTE related deficiency within PM control area.
Selective Catalytic Reduction (SCR) and AECD
SCR Inducement System: SCR Inducement System reports status and reasons for Selective Catalytic Reduction (SCR) inducement (driver alerts/restrictions):
- Current SCR inducement status (on/off).
- Reasons for activation (low reagent, incorrect reagent, abnormal consumption, excessive NOx).
- Occurrence of inducement triggers in 10,000 km intervals (0-10k, 10-20k, 20-30k, 30-40k km).
- Total distance traveled with inducement active (may be reported per 10,000 km block).
NOx Warning And Inducement System: NOx Warning And Inducement System reports warning/inducement levels (Level 1-3 severity) and statuses (Inactive, Enabled but not active, Active, Not supported). It also reports total engine hours for:
- Incorrect reagent use.
- Incorrect reagent consumption rate.
- Reagent dosing interruption (AECD).
- Active DTC for incorrect EGR operation.
- Active DTC for incorrect NOx control equipment operation.
Engine Run Time for AECD: Engine Run Time for AECD reports total time (in seconds) each “Emissions Increasing Auxiliary Emissions Control Device” (AECD) was active. It lists AECD # and may have one or two timers:
- One timer: TIME1 = total run time AECD active, TIME2 = “not used”.
- Two timers: TIME1 = run time AECD inhibiting up to 75% emissions control, TIME2 = run time inhibiting >75% emissions control.
Timers cannot be reset by scan tool or battery disconnection.
By understanding these comprehensive live data parameters offered by BlueDriver, you gain an unparalleled ability to diagnose, maintain, and optimize your vehicle’s performance. While searching for “bluedriver bluetooth pro obd2 c near me,” remember you’re not just looking for a tool, but access to a wealth of vehicle knowledge right at your fingertips.
