OBD Guide

C0101

Rear ABS Wheel Speed Sensor Right

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

Symptoms

  • The ABS indicator on the dashboard is on
  • ABS does not activate when braking
  • Loss of ESP function (if related to ABS)

Causes

  • Broken or damaged sensor wiring harness
  • Malfunction of the wheel speed sensor itself
  • Contamination or damage to the gear on the hub
  • Poor contact in the sensor connector

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Clean and inspect the sensor connector
  3. Check sensor resistance (compare with specifications)
  4. Inspect the gear on the hub for damage
  5. If necessary, replace the wheel speed sensor

Related codes

Error C0101 by Vehicle Brand