OBD Guide

B1C09

Driver Left/Right Mirror Motor Circuit Short To Ground

B1C09 is an OBD-II diagnostic trouble code meaning: Driver Left/Right Mirror Motor Circuit Short To Ground. Common causes: damage to the mirror motor circuit wires, short circuit in the mirror motor. Estimated repair cost: $33–111.

Severity
Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Left or right mirror adjustment does not work
  • The mirror does not respond to commands from the switch
  • Mirror circuit fuse blown

Causes

  • Damage to the mirror motor circuit wires
  • Short circuit in the mirror motor
  • Damage to the wiring harness in the doors
  • Short circuit in mirror adjustment switch
  • Problems with the mirror control unit

How to Fix

  1. Check the integrity of the mirror motor circuit wires
  2. Check the resistance of the mirror motor
  3. Inspect the wiring harness in the door for damage.
  4. Check the mirror adjustment switch
  5. If necessary, replace the motor or wiring harness

Related codes

FAQ

What does the B1C09 code mean?

B1C09 is an OBD-II diagnostic trouble code that indicates: Driver Left/Right Mirror Motor Circuit Short To Ground

What causes a B1C09 error code?

The most common causes of B1C09 include: Damage to the mirror motor circuit wires; Short circuit in the mirror motor; Damage to the wiring harness in the doors; Short circuit in mirror adjustment switch.

How do I fix a B1C09 diagnostic trouble code?

To fix B1C09: Check the integrity of the mirror motor circuit wires. Check the resistance of the mirror motor. Inspect the wiring harness in the door for damage.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1C09?

Yes, but get it checked soon

How much does it cost to fix B1C09?

The estimated repair cost for B1C09 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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