OBD Guide

C1A96

Brake Light Signal Stuck High

C1A96 is an OBD-II diagnostic trouble code meaning: Brake Light Signal Stuck High. Common causes: short circuit in the brake light circuit, brake pedal sensor malfunction. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$22–111 (est.)

Symptoms

  • Brake lights are constantly on
  • Incorrect operation of systems that depend on the braking signal
  • Dashboard warning

Causes

  • Short circuit in the brake light circuit
  • Brake pedal sensor malfunction
  • Problem in the control unit
  • Brake pedal sticking
  • Wiring harness damage

How to Fix

  1. Check the condition of the brake lights and their operation
  2. Check the brake pedal sensor and its connection
  3. Check the integrity of the wiring harness in the brake light circuit
  4. Check the control unit for errors
  5. If necessary, replace faulty components

Related codes

FAQ

What does the C1A96 code mean?

C1A96 is an OBD-II diagnostic trouble code that indicates: Brake Light Signal Stuck High

What causes a C1A96 error code?

The most common causes of C1A96 include: Short circuit in the brake light circuit; Brake pedal sensor malfunction; Problem in the control unit; Brake pedal sticking.

How do I fix a C1A96 diagnostic trouble code?

To fix C1A96: Check the condition of the brake lights and their operation. Check the brake pedal sensor and its connection. Check the integrity of the wiring harness in the brake light circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1A96?

Do not drive — repair immediately

How much does it cost to fix C1A96?

The estimated repair cost for C1A96 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat