C0156Right Front ABS Outlet Solenoid Circuit
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- C0156 completes the Saab/GM group of four and is likewise absent from the accessible J2012 tables. Saab lists it as the right pressure-reduction valve for the 9-3/9-5 with Bosch 5.3 traction control and as the right pressure relief valve in the 9-5 ESP; GM's PIP5094 keyword list names the code, and AA1Car's GM-based table gives Right TCS Solenoid #2. Reading it as the right front outlet valve fits its task of releasing pressure from that circuit after a traction or ABS intervention. Saab's fault page ends, after the wiring and actuator checks, with replacing the control module, since the coils are tied to the electronic unit. Until then the car brakes normally but without ABS, TCS or ESP support.
- What you may notice
- ABS, brake and TCS/ESP OFF lamps on
- Wheels may lock under emergency braking
- Likely causes
- LikelyOpen or shorted coil of the right pressure-reduction valve
- PossibleFault inside the control unit carrying the valve coils
- RareMoisture or corrosion at the control unit connector
- Repair
- Hard · Usually a job for a workshop.Typical cost: €300 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.