OBD Guide

C0029

Simultaneous Drop-Out Of Front Wheel Speed Sensors Signals

C0029 is an OBD-II diagnostic trouble code meaning: Simultaneous Drop-Out Of Front Wheel Speed Sensors Signals. Common causes: open or short circuit in the sensor wiring harness, malfunction of front wheel speed sensors. Estimated repair cost: $56–167.

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

FAQ

What does the C0029 code mean?

C0029 is an OBD-II diagnostic trouble code that indicates: Simultaneous Drop-Out Of Front Wheel Speed Sensors Signals

What causes a C0029 error code?

The most common causes of C0029 include: Open or short circuit in the sensor wiring harness; Malfunction of front wheel speed sensors; Damage to gears on hubs; Problems with sensor connectors.

How do I fix a C0029 diagnostic trouble code?

To fix C0029: Check the integrity of the sensor wiring harness. Check the resistance of the speed sensors. Inspect the gears on the hubs. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C0029?

Limited driving only, diagnose soon

How much does it cost to fix C0029?

The estimated repair cost for C0029 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat