Stop Lamp Switch Circuit Plausibility Failure
Table of contents
B3894 GMC Possible Causes
- Faulty Stop Lamp Switch Circuit
- Stop Lamp Switch Circuit harness is open or shorted
- Stop Lamp Switch Circuit circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code B3894 GMC?
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 B3894 GMC code
The cost of diagnosing the B3894 GMC 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)
B3894 GMC Description
The Body Control Module (BCM) monitors the Stop Lamp Switch Circuit. The BCM sets the OBDII code when the Stop Lamp Switch Circuit is not to factory specifications.