- Faulty Anti-Lock Brake System (ABS) Module
- Faulty Powertrain Control Module (PCM)
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C121c DescriptionThe Anti-Lock Brake System (ABS) Module monitors the Yaw Control/Traction Control System. The ABS Module sets the OBDII code if engine management relevant for Automatic Yaw Control/Traction Control System control can be accomplished.
C121C Information for specific makes
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