What does code U3005 mean?

Q: What does code U3005 mean?

Retained Accessory Power. U3005 indicates that the body control module (BCM) or a dedicated control module has detected a fault in the retained accessory power (RAP) circuit, which keeps power flowing to accessories like the radio and windows after the ignition is turned off. The computer monitors voltage and current on the RAP relay control circuit and sets this code when the circuit is open, shorted, or the relay does not respond as commanded.

DTC codes / U30xx · Network wiring and bus faults / U3005

U3005Retained Accessory Power

U3005 indicates that the body control module (BCM) or a dedicated control module has detected a fault in the retained accessory power (RAP) circuit, which keeps power flowing to accessories like the radio and windows after the ignition is turned off. The computer monitors voltage and current on the RAP relay control circuit and sets this code when the circuit is open, shorted, or the relay does not respond as commanded.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaNetwork wiring and bus faults

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

Reading U3005

UNetwork: communication between the vehicle's control modules.

3Generic (SAE) code: it means the same thing on every OBD-II vehicle.

0Network wiring and bus faults.

05The exact fault within that area.

Often seen with

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