ABS Front Outlet Valve Solenoid Circuit
2007-2012 Nissan Altima 2.5L I4
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
Nissan 200SX
1995-1998 1.6L I4 GA16DE
Nissan 200SX SE-R
1995-1998 2.0L I4 SR20DE
Nissan 240SX
1995-1998 2.4L I4 KA24DE
Nissan 300ZX
1990-1996 3.0L V6 VG30DE
Nissan 300ZX Twin Turbo
1990-1996 3.0L Twin-Turbo V6 VG30DETT
Nissan 350Z
2003-2006 3.5L V6 VQ35DE
Nissan 350Z
2007-2009 3.5L V6 VQ35HR
Nissan 370Z
2009-2020 3.7L V6 VQ37VHR
Common Questions
What does code C0056 mean on a 2007-2012 Nissan Altima?
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 Nissan Altima?
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 2007-2012 Nissan Altima?
Common causes of C0056 include: Outlet valve solenoid stuck, ABS modulator internal failure, Electrical fault in solenoid driver, Contaminated brake fluid causing valve sticking.