C1028
ABS Primary Circuit Wheel Pressure
C1028 is an OBD-II diagnostic trouble code meaning: ABS Primary Circuit Wheel Pressure. Common causes: malfunction of the pressure sensor in the abs circuit, problems in the abs primary wiring harness or connectors. Estimated repair cost: $89–333.
Symptoms
- The ABS/ESP indicator on the dashboard is on
- ABS system is not working correctly or is disabled
- Uneven braking
Causes
- Malfunction of the pressure sensor in the ABS circuit
- Problems in the ABS primary wiring harness or connectors
- Hydraulic valve failure in ABS unit
- Brake fluid leak
- Damage to the wheel speed sensor
How to Fix
- Check the level and condition of the brake fluid
- Diagnose wheel speed sensors and their wiring
- Check resistance and voltage in the ABS primary circuit
- Inspect the ABS hydraulic unit for leaks or damage.
- If necessary, replace faulty components and reset the error using a scanner
Related codes
FAQ
What does the C1028 code mean?
C1028 is an OBD-II diagnostic trouble code that indicates: ABS Primary Circuit Wheel Pressure
What causes a C1028 error code?
The most common causes of C1028 include: Malfunction of the pressure sensor in the ABS circuit; Problems in the ABS primary wiring harness or connectors; Hydraulic valve failure in ABS unit; Brake fluid leak.
How do I fix a C1028 diagnostic trouble code?
To fix C1028: Check the level and condition of the brake fluid. Diagnose wheel speed sensors and their wiring. Check resistance and voltage in the ABS primary circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1028?
Limited driving only, diagnose soon
How much does it cost to fix C1028?
The estimated repair cost for C1028 is $89–333. Actual cost depends on your vehicle, location, and labor rates.
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