ABS Front Outlet Valve Solenoid Circuit
2013-2019 Cadillac XTS 3.6L 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
Cadillac ATS
2013-2019 2.0L Turbo I4
Cadillac ATS
2013-2019 2.5L I4
Cadillac ATS-V
2016-2019 3.6L Twin-Turbo V6
Cadillac CT4
2020-2024 2.0L Turbo I4
Cadillac CT4
2020-2024 2.7L Turbo I4
Cadillac CT4-V
2020-2024 2.7L Turbo I4
Cadillac CT4-V Blackwing
2022-2024 3.6L Twin-Turbo V6
Cadillac CT5
2020-2024 2.0L Turbo I4
Common Questions
What does code C0056 mean on a 2013-2019 Cadillac XTS?
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 Cadillac XTS?
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 2013-2019 Cadillac XTS?
Common causes of C0056 include: Outlet valve solenoid stuck, ABS modulator internal failure, Electrical fault in solenoid driver, Contaminated brake fluid causing valve sticking.