ABS Front Outlet Valve Solenoid Circuit
2003-2010 Porsche Cayenne 3.2L V6
Description
Malfunction in the front ABS outlet valve solenoid, which releases brake pressure during ABS activation.
Symptoms
- ABS light on
- Front brakes lock during ABS event
- Brake pedal hard during ABS activation
- Poor ABS performance
Common Causes
- Outlet valve solenoid stuck
- ABS modulator internal failure
- Electrical fault in solenoid driver
- Contaminated brake fluid causing valve sticking
Diagnostic Steps
- Test solenoid resistance at module connector
- Command valve with scan tool
- Check brake fluid condition
- Inspect module connector
- Check for related pump motor codes
Repair Notes
Replace ABS hydraulic modulator if solenoid is faulty. Flush brake fluid.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0056 on Other Vehicles
Porsche 718 Boxster
2017-2024 2.0L H4 Turbo
Porsche 718 Boxster
2017-2024 2.0L Turbo H4
Porsche 718 Boxster GTS
2020-2024 4.0L H6
Porsche 718 Boxster S
2017-2024 2.5L Turbo H4
Porsche 718 Cayman
2017-2024 2.0L H4 Turbo
Porsche 718 Cayman
2017-2024 2.0L Turbo H4
Porsche 718 Cayman GT4
2019-2024 4.0L H6
Porsche 718 Cayman GTS
2020-2024 4.0L H6
Common Questions
What does code C0056 mean on a 2003-2010 Porsche Cayenne?
C0056 stands for "ABS Front Outlet Valve Solenoid Circuit". Malfunction in the front ABS outlet valve solenoid, which releases brake pressure during ABS activation.
What are the symptoms of C0056 on a Porsche Cayenne?
Common symptoms of C0056 include: ABS light on, Front brakes lock during ABS event, Brake pedal hard during ABS activation, Poor ABS performance.
What causes C0056 on a 2003-2010 Porsche Cayenne?
Common causes of C0056 include: Outlet valve solenoid stuck, ABS modulator internal failure, Electrical fault in solenoid driver, Contaminated brake fluid causing valve sticking.