OBD Guide

C1425

Open In Stop Light Switch Circuit

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–56 (est.)

Symptoms

  • Brake lights don't work
  • Cruise control does not disengage when you press the brakes
  • Check Engine light comes on
  • Problems with the ABS system

Causes

  • Broken or damaged wires in the brake light switch circuit
  • Brake light switch malfunction
  • Poor contact in connectors
  • Short circuit in the circuit

How to Fix

  1. Check the integrity of the wires in the brake light switch circuit
  2. Check the operation of the brake light switch
  3. Clean or replace connectors if poor contacts are found
  4. Replace the brake light switch if it is faulty
  5. Reset the error code and check if it returns

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