C05A0

Symptoms

• The ABS/ESP warning light comes on
• Disabling the ABS/ESC system
• Loss of information about pressure in the brake system
• Incorrect operation of the emergency braking system

Causes

• Open or short circuit in the sensor circuit
• Brake pressure sensor fault E
• Corrosion of contacts in connectors
• Wiring harness damage
• Problems with the ABS/ESC module

How to Fix

1. Code diagnostics using an OBD-II scanner
2. Visual inspection of the wiring harness and contacts in the sensor circuit
3. Checking the resistance and voltage at the brake pressure sensor
4. Checking the continuity of the circuit between the sensor and the ABS/ESC module
5. Replacing the brake pressure sensor if necessary
6. Cleaning contacts and replacing damaged wiring sections
7. Resetting the fault code and testing the system

Related codes

Error C05A0 by Vehicle Brand