C1029
ABS Primary Circuit Pressure Lower Than Secondary
C1029 is an OBD-II diagnostic trouble code meaning: ABS Primary Circuit Pressure Lower Than Secondary. Common causes: brake fluid leak in the primary circuit, abs pump malfunction. Estimated repair cost: $56–167.
Symptoms
- ABS light is on
- Reduced braking performance
- Unusual noises when braking
Causes
- Brake fluid leak in the primary circuit
- ABS pump malfunction
- Problems with solenoid valves
- Brake fluid contamination
- Damage to ABS wiring harness
How to Fix
- Check the level and condition of the brake fluid
- Inspect brake lines for leaks
- Check the operation of the ABS pump
- Diagnose solenoid valves
- Check ABS wiring harness for damage
Related codes
FAQ
What does the C1029 code mean?
C1029 is an OBD-II diagnostic trouble code that indicates: ABS Primary Circuit Pressure Lower Than Secondary
What causes a C1029 error code?
The most common causes of C1029 include: Brake fluid leak in the primary circuit; ABS pump malfunction; Problems with solenoid valves; Brake fluid contamination.
How do I fix a C1029 diagnostic trouble code?
To fix C1029: Check the level and condition of the brake fluid. Inspect brake lines for leaks. Check the operation of the ABS pump. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1029?
Limited driving only, diagnose soon
How much does it cost to fix C1029?
The estimated repair cost for C1029 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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