Rear Doppler Sensor Circuit Failure
Table of contents
B2156 Possible Causes
- Faulty Rear Doppler Sensor
- Rear Doppler Sensor harness is open or shorted
- Rear Doppler Sensor circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code B2156?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the B2156 code
The cost of diagnosing the B2156 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B2156 Description
The Body Control Module (BCM) monitors the Rear Doppler Sensor. The BCM sets the OBDII code when the Rear Doppler Sensor is not to factory specifications.