C0291 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C0291 – Lost Communications With BCM


C0291 Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C0291 Possible Causes


Faulty Electronic Brake Control Module (EBCM),Electronic Brake Control Module (EBCM) harness is open or shorted,Electronic Brake Control Module (EBCM) circuit poor electrical connection


C0291 Description


The Body Control Module (BCM) sends a state of health serial data message to the Electronic Brake Control Module (EBCM) within 5.5 seconds after the ignition is turned ON. The EBCM fails to receive serial data from the BCM.