OBD Guide

B2135

Park Brake Applied Warning Lamp Circuit Failure

B2135 is an OBD-II diagnostic trouble code meaning: Park Brake Applied Warning Lamp Circuit Failure. Common causes: open or short circuit in wiring harness, warning lamp fault. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • The parking brake warning light does not light up when the brake is applied.
  • The lamp is constantly on, even when the brake is off
  • The lamp flashes or is unstable

Causes

  • Open or short circuit in wiring harness
  • Warning lamp fault
  • Relay or fuse problems
  • Control unit malfunction

How to Fix

  1. Check the fuse and relay associated with the lamp circuit
  2. Inspect the wiring harness for damage
  3. Check the lamp itself for serviceability
  4. Check the operation of the control unit using a diagnostic scanner

Related codes

FAQ

What does the B2135 code mean?

B2135 is an OBD-II diagnostic trouble code that indicates: Park Brake Applied Warning Lamp Circuit Failure

What causes a B2135 error code?

The most common causes of B2135 include: Open or short circuit in wiring harness; Warning lamp fault; Relay or fuse problems; Control unit malfunction.

How do I fix a B2135 diagnostic trouble code?

To fix B2135: Check the fuse and relay associated with the lamp circuit. Inspect the wiring harness for damage. Check the lamp itself for serviceability. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2135?

Limited driving only, diagnose soon

How much does it cost to fix B2135?

The estimated repair cost for B2135 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat