OBD Guide
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B108F

Cabin Lock/Unlock Switch Signal Stuck Low

B108F is an OBD-II diagnostic trouble code meaning: Cabin Lock/Unlock Switch Signal Stuck Low. Common causes: lock/unlock switch stuck, open or short circuit in wiring harness. Estimated repair cost: $22–167.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$22–167 (est.)

Symptoms

  • Door lock/unlock buttons do not work
  • The hazard lights are flashing
  • The passive safety system shows an error

Causes

  • Lock/unlock switch stuck
  • Open or short circuit in wiring harness
  • Body module malfunction
  • Problems with contacts in the switch

How to Fix

  1. Check the mechanical condition of the lock/unlock switch
  2. Check the integrity of the wiring harness to the switch
  3. Check contacts and connections
  4. Test the operation of the body module
  5. Replace switch if necessary

Related codes

B108EB1090B1091

FAQ

What does the B108F code mean?

B108F is an OBD-II diagnostic trouble code that indicates: Cabin Lock/Unlock Switch Signal Stuck Low

What causes a B108F error code?

The most common causes of B108F include: Lock/unlock switch stuck; Open or short circuit in wiring harness; Body module malfunction; Problems with contacts in the switch.

How do I fix a B108F diagnostic trouble code?

To fix B108F: Check the mechanical condition of the lock/unlock switch. Check the integrity of the wiring harness to the switch. Check contacts and connections. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B108F?

Do not drive — repair immediately

How much does it cost to fix B108F?

The estimated repair cost for B108F is $22–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat