Auxiliary Switch Signal Erratic
Table of contents
B102F MERCURY Possible Causes
- Faulty Auxiliary Switch
- Auxiliary Switch harness is open or shorted
- Auxiliary Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code B102F MERCURY?
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 B102F MERCURY code
The cost of diagnosing the B102F MERCURY 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)
B102F MERCURY Description
The Body Control Module (BCM) monitors the Auxiliary Switch. The BCM sets the OBDII code when the Auxiliary Switch is not to factory specifications.