OBD Guide
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B25C9

Driver Door Ajar Switch 2 Stuck Closed

B25C9 is an OBD-II diagnostic trouble code meaning: Driver Door Ajar Switch 2 Stuck Closed. Common causes: door sensor malfunction, open or shorted wiring harness. Estimated repair cost: $11–56.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$11–56 (est.)

Symptoms

  • False alarm
  • Incorrect operation of interior lighting
  • Error on the dashboard

Causes

  • Door sensor malfunction
  • Open or shorted wiring harness
  • Problems with contacts in connectors
  • Body Control Module (BCM) Malfunction

How to Fix

  1. Check the status of the door sensor
  2. Inspect the wiring harness for damage
  3. Check contacts in connectors
  4. Replace sensor if necessary
  5. Test the operation of the system after repair

Related codes

B25C8B25CAB25CB

FAQ

What does the B25C9 code mean?

B25C9 is an OBD-II diagnostic trouble code that indicates: Driver Door Ajar Switch 2 Stuck Closed

What causes a B25C9 error code?

The most common causes of B25C9 include: Door sensor malfunction; Open or shorted wiring harness; Problems with contacts in connectors; Body Control Module (BCM) Malfunction.

How do I fix a B25C9 diagnostic trouble code?

To fix B25C9: Check the status of the door sensor. Inspect the wiring harness for damage. Check contacts in connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B25C9?

Limited driving only, diagnose soon

How much does it cost to fix B25C9?

The estimated repair cost for B25C9 is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat