C0156 Right TCS Solenoid #2 Circuit
C0156 is a generic OBD2 chassis code. It means “Right TCS Solenoid #2 Circuit” — the same on every make and model, because the definition comes from the SAE J2012 standard rather than from the carmaker.
Ask the AI about C0156 on your car- System
- Chassis (C)
- Code type
- Generic (SAE)
- Range
- C01xx
What the wording tells you
The wording names a fault in the component’s circuit without saying more. Check the connector, the wiring and the fuse, and test the component, before replacing it.
Can I keep driving with C0156?
The rule of thumb for this area (ABS, traction & stability control): Normal braking still works, but ABS and stability control may be off: brake earlier on wet or icy roads and get it checked soon. If the red brake warning lamp is on too, or the pedal feels different, stop and have the brakes inspected.
How C0156 breaks down
Chassis. ABS, traction and stability control, steering.
Generic code: defined by SAE, the same on every make.
ABS, traction & stability control.
The specific fault within this range.
Where to look: ABS, traction & stability control
Anti-lock brakes and traction and stability control: wheel-speed sensors, the hydraulic unit with its valves and pump, the brake switch, and the steering-angle, yaw-rate and lateral-acceleration sensors.
Typical causes in this area
- A dirty, damaged or failed wheel-speed sensor or its tone ring
- Wiring near the wheels, exposed to water, salt and debris
- A faulty brake-light switch
- A fault in the hydraulic unit or the module
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Read and clear C0156 on your iPhone
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Frequently asked
What does C0156 mean?
C0156 is a generic OBD2 chassis code. It means “Right TCS Solenoid #2 Circuit” — the same on every make and model, because the definition comes from the SAE J2012 standard rather than from the carmaker.
Can I drive with C0156?
The rule of thumb for this area (ABS, traction & stability control): Normal braking still works, but ABS and stability control may be off: brake earlier on wet or icy roads and get it checked soon. If the red brake warning lamp is on too, or the pedal feels different, stop and have the brakes inspected.
What causes C0156?
The wording names a fault in the component’s circuit without saying more. Check the connector, the wiring and the fuse, and test the component, before replacing it. Typical causes in this area: A dirty, damaged or failed wheel-speed sensor or its tone ring; Wiring near the wheels, exposed to water, salt and debris; A faulty brake-light switch; A fault in the hydraulic unit or the module.
How do I clear C0156?
Fix the cause first, then clear it with any OBD2 scanner or app. Once the fault is gone the car also clears it on its own: the check engine lamp goes off after the self-test passes on three drive cycles in a row, and the stored code ages out after about 40 warm-ups. Clearing without a repair only hides it for a while — and resets the readiness monitors an emissions inspection looks at.
Is C0156 the same on every car?
Yes. C0156 is a generic SAE J2012 code, so its definition is identical on every make and model. What differs is the cause behind it and the repair procedure, which depend on the engine — that’s why the assistant on this page asks for your car.
Guides
Definitions: the generic SAE J2012 codes from Brimly’s offline dictionary (data version 2026.09). Causes and advice are general guidance for all makes — the service information for your car has the last word.