OBD Guide
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B2A35

Interior Lighting Output Circuit Open

B2A35 is an OBD-II diagnostic trouble code meaning: Interior Lighting Output Circuit Open. Common causes: broken or damaged wiring harness, malfunction of the lighting control unit. Estimated repair cost: $11–56.

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

Symptoms

  • Interior lighting does not work
  • Blinking or unstable backlight operation
  • Error on the dashboard

Causes

  • Broken or damaged wiring harness
  • Malfunction of the lighting control unit
  • Short circuit in the circuit
  • Oxidation of contacts
  • Relay fault

How to Fix

  1. Check the integrity of the wiring harness
  2. Inspect contacts for oxidation
  3. Check the operation of the control unit
  4. Replace relay or fuse
  5. Reflash or replace the control unit if necessary

Related codes

B2A36B2A37

FAQ

What does the B2A35 code mean?

B2A35 is an OBD-II diagnostic trouble code that indicates: Interior Lighting Output Circuit Open

What causes a B2A35 error code?

The most common causes of B2A35 include: Broken or damaged wiring harness; Malfunction of the lighting control unit; Short circuit in the circuit; Oxidation of contacts.

How do I fix a B2A35 diagnostic trouble code?

To fix B2A35: Check the integrity of the wiring harness. Inspect contacts for oxidation. Check the operation of the control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2A35?

Limited driving only, diagnose soon

How much does it cost to fix B2A35?

The estimated repair cost for B2A35 is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat