C05CA
Brake Master Cylinder Piston Position Sensor A Circuit Voltage High
C05CA is an OBD-II diagnostic trouble code meaning: Brake Master Cylinder Piston Position Sensor A Circuit Voltage High. Common causes: master cylinder piston position sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- The brake system fault indicator is on
- Reduced braking performance
- ABS activation during normal braking
- Unstable operation of the brake system
Causes
- Master cylinder piston position sensor malfunction
- Open or short circuit in wiring harness
- Corrosion or poor contact in connectors
- Malfunction of the brake control unit (ECU)
How to Fix
- Check the integrity of the wiring harness and sensor connectors
- Measure resistance and voltage at the sensor
- Check sensor operation using a diagnostic scanner
- Replace sensor or wiring harness if necessary
- Test the system after repair
Related codes
Error C05CA by Vehicle Brand
FAQ
What does the C05CA code mean?
C05CA is an OBD-II diagnostic trouble code that indicates: Brake Master Cylinder Piston Position Sensor A Circuit Voltage High
What causes a C05CA error code?
The most common causes of C05CA include: Master cylinder piston position sensor malfunction; Open or short circuit in wiring harness; Corrosion or poor contact in connectors; Malfunction of the brake control unit (ECU).
How do I fix a C05CA diagnostic trouble code?
To fix C05CA: Check the integrity of the wiring harness and sensor connectors. Measure resistance and voltage at the sensor. Check sensor operation using a diagnostic scanner. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C05CA?
Limited driving only, diagnose soon
How much does it cost to fix C05CA?
The estimated repair cost for C05CA is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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