What does code C0593 mean?

Q: What does code C0593 mean?

Brake Booster Motor B Phase U-V-W Current Low. The anti-lock brake system (ABS) control module monitors the three-phase current feeding the brake booster motor and has detected that the current in one or more of the U, V, or W phases is lower than expected for the commanded output. This indicates a problem in the motor circuit, the motor itself, or the module's current-sensing feedback, and the module stores C0593 while disabling the electric brake booster assist.

DTC codes / C05xx · Brakes, steering and suspension / C0593

C0593Brake Booster Motor B Phase U-V-W Current Low

The anti-lock brake system (ABS) control module monitors the three-phase current feeding the brake booster motor and has detected that the current in one or more of the U, V, or W phases is lower than expected for the commanded output. This indicates a problem in the motor circuit, the motor itself, or the module's current-sensing feedback, and the module stores C0593 while disabling the electric brake booster assist.

SystemChassis

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

AreaBrakes, steering and suspension

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.