OBD Guide

C0028

Rear Left ABS Sensor Signal

C0028 is an OBD-II diagnostic trouble code meaning: Rear Left ABS Sensor Signal. Common causes: abs sensor malfunction, open or shorted wiring harness. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • The ABS indicator on the instrument panel is on
  • ABS system is activated on rough roads
  • Loss of ABS function on the rear left wheel

Causes

  • ABS sensor malfunction
  • Open or shorted wiring harness
  • The magnetic ring is dirty or damaged
  • Problems with the sensor connector

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Clean the working surface of the sensor and magnetic ring
  3. Check the resistance of the ABS sensor (usually 800-2500 Ohms)
  4. Replace ABS sensor if necessary
  5. Clear error codes and test drive

Related codes

Error C0028 by Vehicle Brand

FAQ

What does the C0028 code mean?

C0028 is an OBD-II diagnostic trouble code that indicates: Rear Left ABS Sensor Signal

What causes a C0028 error code?

The most common causes of C0028 include: ABS sensor malfunction; Open or shorted wiring harness; The magnetic ring is dirty or damaged; Problems with the sensor connector.

How do I fix a C0028 diagnostic trouble code?

To fix C0028: Check the integrity of the sensor wiring harness. Clean the working surface of the sensor and magnetic ring. Check the resistance of the ABS sensor (usually 800-2500 Ohms). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C0028?

Limited driving only, diagnose soon

How much does it cost to fix C0028?

The estimated repair cost for C0028 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat