OBD Guide

C0165

Antilock Brake System/Traction Control System Brake Switch/Sensor Circuit Open

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • ABS/TCS indicator is on
  • Incorrect operation of ABS/TCS
  • Disabling cruise control
  • Lack of response to pressing the brake pedal

Causes

  • Broken or damaged wiring harness
  • Faulty brake pedal sensor
  • Poor contact in the sensor connector
  • Problems with the ABS control unit

How to Fix

  1. Check the condition of the wiring harness and connectors
  2. Test the brake pedal sensor
  3. Check voltage and resistance in the circuit
  4. Replace faulty components

Related codes

Error C0165 by Vehicle Brand