OBD Guide
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B2500

Courtesy Lamp Output Check Short To Battery

B2500 is an OBD-II diagnostic trouble code meaning: Courtesy Lamp Output Check Short To Battery. Common causes: wiring harness damage, interior lamp malfunction. Estimated repair cost: $11–56.

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

Symptoms

  • Interior lamps do not work
  • Fuses blow
  • The appearance of a burning smell from the wiring

Causes

  • Wiring harness damage
  • Interior lamp malfunction
  • Problems with the lighting control module
  • Short circuit in the circuit

How to Fix

  1. Check and replace fuse
  2. Inspect the wiring harness for damage
  3. Check the functionality of the interior lamp
  4. Diagnose the lighting control module
  5. Replace damaged components

FAQ

What does the B2500 code mean?

B2500 is an OBD-II diagnostic trouble code that indicates: Courtesy Lamp Output Check Short To Battery

What causes a B2500 error code?

The most common causes of B2500 include: Wiring harness damage; Interior lamp malfunction; Problems with the lighting control module; Short circuit in the circuit.

How do I fix a B2500 diagnostic trouble code?

To fix B2500: Check and replace fuse. Inspect the wiring harness for damage. Check the functionality of the interior lamp. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2500?

Limited driving only, diagnose soon

How much does it cost to fix B2500?

The estimated repair cost for B2500 is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat