Code C0580 indicates that the electronic brake booster control module has detected a voltage level below the normal operating range on one or more of the motor's three-phase (U, V, W) circuits. This typically points to an electrical failure within the brushless DC motor or its associated wiring.
A short circuit or open winding within the brake booster motor's U, V, or W phases.
Chafed, pinched, or corroded wires between the control module and the booster motor.
Poor electrical contact or moisture intrusion at the motor connector pins.
Failure of the power transistors (MOSFETs) within the brake booster control unit.
A fault in the main vehicle computer's communication with the brake module, though highly unlikely.
No, the mechanical braking system still functions, but the power assist is compromised, making the pedal much harder to press.
In most modern electronic booster designs, the motor and booster assembly are a single sealed unit and must be replaced together.
No. It is very rare for the PCM to cause a C0580; the issue is almost always located within the booster assembly or the wiring leading to it.