OBD Guide

C0508

Right Front Wheel Speed Sensor A Circuit Low

C0508 is an OBD-II diagnostic trouble code meaning: Right Front Wheel Speed Sensor A Circuit Low. Common causes: damage to the wheel speed sensor wiring harness, faulty wheel speed sensor. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • The ABS/ESP indicator on the dashboard is on
  • ABS system does not work
  • Erratic behavior of the ESP system
  • Errors in cruise control operation

Causes

  • Damage to the wheel speed sensor wiring harness
  • Faulty wheel speed sensor
  • Poor contact in the sensor connector
  • Damage to the ring gear on the hub
  • Problems with the ABS control unit

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Check sensor resistance (usually 800-1400 Ohm)
  3. Clean the sensor connector and check the contacts
  4. Check the air gap between the sensor and the ring gear
  5. Replace the wheel speed sensor if necessary

Related codes

Error C0508 by Vehicle Brand

FAQ

What does the C0508 code mean?

C0508 is an OBD-II diagnostic trouble code that indicates: Right Front Wheel Speed Sensor A Circuit Low

What causes a C0508 error code?

The most common causes of C0508 include: Damage to the wheel speed sensor wiring harness; Faulty wheel speed sensor; Poor contact in the sensor connector; Damage to the ring gear on the hub.

How do I fix a C0508 diagnostic trouble code?

To fix C0508: Check the integrity of the sensor wiring harness. Check sensor resistance (usually 800-1400 Ohm). Clean the sensor connector and check the contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C0508?

Limited driving only, diagnose soon

How much does it cost to fix C0508?

The estimated repair cost for C0508 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat