C05C9
Brake Pressure Sensor Supply Circuit
C05C9 is an OBD-II diagnostic trouble code meaning: Brake Pressure Sensor Supply Circuit. Common causes: open or short circuit in the sensor power supply circuit, brake pressure sensor malfunction. Estimated repair cost: $56–167.
Symptoms
- The brake system fault indicator lights up
- Incorrect operation of ABS or ESP
- Reduced braking performance
- Loss of emergency braking assistance
Causes
- Open or short circuit in the sensor power supply circuit
- Brake pressure sensor malfunction
- Wiring Harness Problems
- Brake ECU malfunction
- Corrosion or poor contact in connectors
How to Fix
- Check the integrity of the sensor power supply circuit
- Check the voltage at the sensor connector
- Inspect the wiring harness for damage
- Check connectors for corrosion and poor contact
- Replace brake pressure sensor if necessary
- Check and, if necessary, replace the brake control unit.
Related codes
Error C05C9 by Vehicle Brand
FAQ
What does the C05C9 code mean?
C05C9 is an OBD-II diagnostic trouble code that indicates: Brake Pressure Sensor Supply Circuit
What causes a C05C9 error code?
The most common causes of C05C9 include: Open or short circuit in the sensor power supply circuit; Brake pressure sensor malfunction; Wiring Harness Problems; Brake ECU malfunction.
How do I fix a C05C9 diagnostic trouble code?
To fix C05C9: Check the integrity of the sensor power supply circuit. Check the voltage at the sensor connector. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C05C9?
Limited driving only, diagnose soon
How much does it cost to fix C05C9?
The estimated repair cost for C05C9 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat