OBD Guide

C0029

Simultaneous Drop-Out Of Front Wheel Speed Sensors Signals

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

Symptoms

  • The ABS/ESP indicator on the dashboard is on
  • Disabling the ABS/ESP system
  • Unstable operation of the stabilization system
  • Errors in other systems related to speed sensors

Causes

  • Open or short circuit in the sensor wiring harness
  • Malfunction of front wheel speed sensors
  • Damage to gears on hubs
  • Problems with sensor connectors
  • Malfunction of the ABS/ESP control unit

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Check the resistance of the speed sensors
  3. Inspect the gears on the hubs
  4. Check sensor connectors for corrosion and damage
  5. If necessary, replace the speed sensors or wiring harness

Related codes

Error C0029 by Vehicle Brand