OBD Guide
ENFRDEESPT

B12C6

Electric Steering Lock Switch C/D Monitor Circuit Failure

B12C6 is an OBD-II diagnostic trouble code meaning: Electric Steering Lock Switch C/D Monitor Circuit Failure. Common causes: open or short circuit in wiring harness, malfunction of the electromechanical steering column lock. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • The steering wheel lock does not work or works incorrectly
  • Problems starting the engine (in some cases)

Causes

  • Open or short circuit in wiring harness
  • Malfunction of the electromechanical steering column lock
  • Corrosion of contacts or connectors
  • Problems with the control unit
  • Low battery voltage

How to Fix

  1. Check battery voltage
  2. Inspect the wiring harness and connectors for damage.
  3. Check the operation of the steering column lock
  4. Scan the control unit for additional errors
  5. If necessary, replace the lock or repair the wiring harness

Related codes

B12C5B12C7

FAQ

What does the B12C6 code mean?

B12C6 is an OBD-II diagnostic trouble code that indicates: Electric Steering Lock Switch C/D Monitor Circuit Failure

What causes a B12C6 error code?

The most common causes of B12C6 include: Open or short circuit in wiring harness; Malfunction of the electromechanical steering column lock; Corrosion of contacts or connectors; Problems with the control unit.

How do I fix a B12C6 diagnostic trouble code?

To fix B12C6: Check battery voltage. Inspect the wiring harness and connectors for damage.. Check the operation of the steering column lock. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B12C6?

Limited driving only, diagnose soon

How much does it cost to fix B12C6?

The estimated repair cost for B12C6 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat