OBD Guide
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B25BC

Left Front Door Ajar Switch Stuck Closed

B25BC is an OBD-II diagnostic trouble code meaning: Left Front Door Ajar Switch Stuck Closed. Common causes: mechanical damage to the sensor, oxidation of contacts. Estimated repair cost: $11–56.

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

Symptoms

  • Incorrect operation of the central locking
  • No door open signal on the instrument panel
  • Incorrect operation of interior lighting

Causes

  • Mechanical damage to the sensor
  • Oxidation of contacts
  • Broken wires in the harness
  • Control unit malfunction

How to Fix

  1. Check the condition of the sensor and its fastening
  2. Clean the sensor and connector contacts
  3. Check the integrity of the wiring harness
  4. Replace sensor if necessary
  5. Check the operation of the system after repair

Related codes

B25BDB25BEB25BF

FAQ

What does the B25BC code mean?

B25BC is an OBD-II diagnostic trouble code that indicates: Left Front Door Ajar Switch Stuck Closed

What causes a B25BC error code?

The most common causes of B25BC include: Mechanical damage to the sensor; Oxidation of contacts; Broken wires in the harness; Control unit malfunction.

How do I fix a B25BC diagnostic trouble code?

To fix B25BC: Check the condition of the sensor and its fastening. Clean the sensor and connector contacts. Check the integrity of the wiring harness. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B25BC?

Limited driving only, diagnose soon

How much does it cost to fix B25BC?

The estimated repair cost for B25BC is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat