What does code B0290 mean?

Q: What does code B0290 mean?

Rear Defrost Switch Circuit. B0290 indicates that the body control module (BCM) or rear defrost control module has detected an abnormal condition in the rear defrost switch circuit, such as an open, short, or unexpected voltage. The computer monitors the switch input and sets this code when the signal does not match the expected state for the rear defrost activation request.

DTC codes / B02xx · Airbags, seats, doors, lights and comfort systems / B0290

B0290Rear Defrost Switch Circuit

B0290 indicates that the body control module (BCM) or rear defrost control module has detected an abnormal condition in the rear defrost switch circuit, such as an open, short, or unexpected voltage. The computer monitors the switch input and sets this code when the signal does not match the expected state for the rear defrost activation request.

SystemBody

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaAirbags, seats, doors, lights and comfort systems

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