OBD Guide
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C1403

Rear Speed Sensor Right Malfunction

C1403 is an OBD-II diagnostic trouble code meaning: Rear Speed Sensor Right Malfunction. Common causes: speed sensor malfunction, broken or damaged wiring harness. Estimated repair cost: $33–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • The ABS/ESP light on the dashboard comes on
  • Incorrect operation of the anti-lock braking system
  • Disabling the stabilization system
  • Errors in cruise control operation

Causes

  • Speed sensor malfunction
  • Broken or damaged wiring harness
  • Contaminated or damaged gear
  • Sensor connection problems
  • ABS/ESP module malfunction

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Inspect the gear for damage
  3. Check speed sensor resistance
  4. Replace the speed sensor if necessary
  5. Clear contacts and check connection

Related codes

C1401C1402C1404

FAQ

What does the C1403 code mean?

C1403 is an OBD-II diagnostic trouble code that indicates: Rear Speed Sensor Right Malfunction

What causes a C1403 error code?

The most common causes of C1403 include: Speed sensor malfunction; Broken or damaged wiring harness; Contaminated or damaged gear; Sensor connection problems.

How do I fix a C1403 diagnostic trouble code?

To fix C1403: Check the integrity of the sensor wiring harness. Inspect the gear for damage. Check speed sensor resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1403?

Limited driving only, diagnose soon

How much does it cost to fix C1403?

The estimated repair cost for C1403 is $33–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat