ABS – Brake Actuator Pump Replacement – C1256

A C1256 code is a common diagnostic code that indicates a brake actuator failure in a vehicle. When this code is logged, the car will enter a fail-safe mode that disables antilock brakes, electronic braking force distribution, and regenerative braking.

If you receive a C1256 code, you should stop driving the car and have it diagnosed. Replacing the brake actuator is usually required, and it's not a simple DIY repair. It's also not recommended to use a remanufactured or used part.

---

Here are some other things to know about brake actuators:

• Brake actuator purpose

Brake actuators convert the pressure from the brake pedal into braking force. 

• Brake actuator pump motor failure

A buzzing or whining noise from the brake actuator may indicate a pump motor failure. 

• Brake pedal issues

An unresponsive brake pedal or a brake pedal that moves up and down without resistance may indicate a brake accumulator failure.