OBD Guide

C111A

Right Stop Lamp Circuit

C111A is an OBD-II diagnostic trouble code meaning: Right Stop Lamp Circuit. Common causes: burnt out brake light bulb, broken or damaged wiring harness. Estimated repair cost: $6–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • Right brake light does not work
  • The malfunction indicator on the dashboard is on
  • Error message on display (if provided)

Causes

  • Burnt out brake light bulb
  • Broken or damaged wiring harness
  • Poor contact in the lamp socket
  • Faulty brake light relay
  • Problems with the control unit

How to Fix

  1. Check the right brake light bulb and replace if necessary.
  2. Inspect the wiring harness for damage
  3. Check the contacts in the lamp socket, clean from oxides
  4. Check brake light relay
  5. If the above steps do not help, diagnose the control unit

Related codes

FAQ

What does the C111A code mean?

C111A is an OBD-II diagnostic trouble code that indicates: Right Stop Lamp Circuit

What causes a C111A error code?

The most common causes of C111A include: Burnt out brake light bulb; Broken or damaged wiring harness; Poor contact in the lamp socket; Faulty brake light relay.

How do I fix a C111A diagnostic trouble code?

To fix C111A: Check the right brake light bulb and replace if necessary.. Inspect the wiring harness for damage. Check the contacts in the lamp socket, clean from oxides. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C111A?

Limited driving only, diagnose soon

How much does it cost to fix C111A?

The estimated repair cost for C111A is $6–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat