Fuse for OBD2 Jeep Commander: Locating and Understanding Fuses for Diagnostics

Diagnosing issues in your 2006 Jeep Commander often begins with checking the On-Board Diagnostics system, or OBD2. This system is crucial for identifying problems, and like any electronic system in your vehicle, it relies on fuses to protect its circuits. If you’re experiencing issues with your OBD2 port or related systems, checking the fuses is a fundamental first step. This guide will help you locate the relevant fuses for your Jeep Commander’s OBD2 system and understand the fuse box diagrams.

The 2006 Jeep Commander utilizes multiple fuse boxes throughout the vehicle. To effectively troubleshoot your OBD2 system, it’s important to understand where these fuse boxes are located and which fuses are associated with the diagnostic system. Below are the locations and diagrams for each fuse box in your 2006 Jeep Commander.

Jeep Commander Fuse Box Locations and Diagrams

Your 2006 Jeep Commander is equipped with four distinct fuse box locations. Each box serves a different area of the vehicle’s electrical system. Understanding these locations is key to finding the specific fuse you need to check for your OBD2 system or any other electrical component.

Fuse Panel Diagram

The Fuse Panel is one of the primary fuse box locations in your Jeep Commander. It houses a variety of fuses and circuit breakers protecting numerous interior circuits.

[Fuse Panel diagram](https://images.startmycar.com/legos/fusebox-thumbnails/fusebox-jeep-commander-2006-0.png)

Fuse 16 (10A), labeled “SCM, Cluster OBD (B+)”, in the Fuse Panel is a key fuse related to your OBD2 system. If your OBD2 port is not functioning, this is one of the first fuses to inspect. It supplies power to the Steering Control Module (SCM), instrument cluster, and crucially, the OBD system.

Underhood Fuses (Power Distribution Center) Diagram

Located under the hood, the Power Distribution Center houses fuses and relays that protect high-current systems and engine management components.

[Underhood Fuses (Power Distribution Center) diagram](https://images.startmycar.com/legos/fusebox-thumbnails/fusebox-jeep-commander-2006-1.png)

While the Power Distribution Center might not directly list an “OBD2 fuse”, it’s important to check fuses related to the Powertrain Control Module (PCM) or Transmission Control Module (TCM) if you suspect a broader system issue affecting diagnostics. For gasoline models, Fuse 20 (20A), “PCM Batt”, is relevant to the engine control system and indirectly to OBD2 functionality.

Underhood Fuses (Integrated Power Module) II Diagram

The Integrated Power Module (IPM) II is another underhood fuse box managing various vehicle functions, particularly lighting and fan systems.

[Underhood Fuses (Integrated Power Module) II diagram](https://images.startmycar.com/legos/fusebox-thumbnails/fusebox-jeep-commander-2006-2.png)

This fuse box is less directly related to the OBD2 system, but fuses related to the FCM (Front Control Module), such as Fuses 12, 13, 18 and 20 (all 20A, “FCM Batt #…”), could indirectly impact diagnostic communication if the FCM is experiencing power issues.

Relays Panel Diagram

The Relays Panel in the Jeep Commander houses relays for various convenience and control systems within the vehicle.

[Relays Panel diagram](https://images.startmycar.com/legos/fusebox-thumbnails/fusebox-jeep-commander-2006-3.png)

The Relays Panel primarily deals with relays, but understanding its location can be helpful for a complete overview of your Jeep Commander’s electrical system. Relays K5, K6, and K7, related to “Run/Accessory” and “Run”, are part of the ignition system and indirectly related to systems needed for OBD2 to function, though not directly fuses for the OBD2 port itself.

Conclusion

When troubleshooting OBD2 issues in your 2006 Jeep Commander, start by checking Fuse 16 (10A) “SCM, Cluster OBD (B+)” in the interior Fuse Panel. If this fuse is intact, and you’re still experiencing problems, consult the other fuse box diagrams and consider checking fuses related to the PCM, TCM, and FCM in the underhood fuse boxes as a next step in your diagnostic process. Always refer to your vehicle’s owner’s manual for the most accurate fuse information and consult a qualified mechanic if you are unsure about diagnosing or repairing electrical issues.