B126A - Drivers Door Interior Lock Switch General Electrical Failure

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

B126A Possible Causes

  • Faulty Drivers Door Interior Lock Switch
  • Drivers Door Interior Lock Switch harness is open or shorted
  • Drivers Door Interior Lock Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)

First diagnose B126A code

    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 terminals.

Cost of diagnosing the B126A code

    Labor: 1.0

    The cost of diagnosing the B126A code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

B126A Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B126A Meaning

The Body Control Module (BCM) sends voltage signals to the door lock control switches through the lock and unlock input circuits. When the lock or unlock switch is pressed, the corresponding voltage signal is routed to ground, signaling the BCM to lock or unlock the doors. The door lock control switches have a dedicated ground circuit. The BCM monitors the Drivers Door Interior Lock Switch. The BCM sets the OBDII code when the Drivers Door Interior Lock Switch is not to factory specifications.
OBDII Code B126A - Drivers Door Interior Lock Switch General Electrical Failure - Engine-Codes.com

B126A More Information

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B126A Information for specific makes

  • B126A FORD Drivers Door Interior Lock Switch General Electrical Failure
  • B126A LINCOLN Drivers Door Interior Lock Switch General Electrical Failure
  • B126A MERCURY Drivers Door Interior Lock Switch General Electrical Failure

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