C1478
Front Left Wheel Brake Pressure Control Plausibility Failure
C1478 is an OBD-II diagnostic trouble code meaning: Front Left Wheel Brake Pressure Control Plausibility Failure. Common causes: malfunction of the pressure sensor in the left front circuit, abs module hydraulic valve problems. Estimated repair cost: $56–222.
Symptoms
- ABS/ESP indicator is on
- Deterioration of the stabilization system
- Activating the emergency brake system
Causes
- Malfunction of the pressure sensor in the left front circuit
- ABS module hydraulic valve problems
- Air in the brake system
- Mechanical damage to brake lines
- ABS module malfunction
How to Fix
- Diagnostics of the brake system with a scanner
- Checking the tightness of the left front wheel circuit
- Testing ABS module pressure sensors and valves
- Bleeding the brake system
- Replacing faulty components
Related codes
FAQ
What does the C1478 code mean?
C1478 is an OBD-II diagnostic trouble code that indicates: Front Left Wheel Brake Pressure Control Plausibility Failure
What causes a C1478 error code?
The most common causes of C1478 include: Malfunction of the pressure sensor in the left front circuit; ABS module hydraulic valve problems; Air in the brake system; Mechanical damage to brake lines.
How do I fix a C1478 diagnostic trouble code?
To fix C1478: Diagnostics of the brake system with a scanner. Checking the tightness of the left front wheel circuit. Testing ABS module pressure sensors and valves. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1478?
Limited driving only, diagnose soon
How much does it cost to fix C1478?
The estimated repair cost for C1478 is $56–222. Actual cost depends on your vehicle, location, and labor rates.
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