OBD Guide

C003D

Rear Wheel Speed Sensor

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • ABS/ESP indicator is on
  • Incorrect operation of the ABS system
  • Lack of stabilization when braking
  • Errors in the ESP system

Causes

  • Broken or damaged sensor wiring harness
  • Malfunction of the speed sensor itself
  • Contamination or damage to the ring gear
  • Sensor connection problems
  • Short circuit in the circuit

How to Fix

  1. Check the integrity of the wiring harness
  2. Check the condition of the ring gear
  3. Test the speed sensor with a multimeter
  4. Replace sensor if necessary
  5. Clear contacts and check connection

Related codes

Error C003D by Vehicle Brand