OBD Guide

C003D

Rear Wheel Speed Sensor

C003D is an OBD-II diagnostic trouble code meaning: Rear Wheel Speed Sensor. Common causes: broken or damaged sensor wiring harness, malfunction of the speed sensor itself. Estimated repair cost: $56–167.

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

FAQ

What does the C003D code mean?

C003D is an OBD-II diagnostic trouble code that indicates: Rear Wheel Speed Sensor

What causes a C003D error code?

The most common causes of C003D include: Broken or damaged sensor wiring harness; Malfunction of the speed sensor itself; Contamination or damage to the ring gear; Sensor connection problems.

How do I fix a C003D diagnostic trouble code?

To fix C003D: Check the integrity of the wiring harness. Check the condition of the ring gear. Test the speed sensor with a multimeter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C003D?

Limited driving only, diagnose soon

How much does it cost to fix C003D?

The estimated repair cost for C003D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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