C0691 Code: Meaning, Causes, and Symptoms | OBD2 Codes
C0691 – Damper Control Relay Circuit Range
C0691 Possible Symptoms
Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)
C0691 Possible Causes
Faulty Damper Control Relay,Damper Control Relay harness is open or shorted,Damper Control Relay circuit poor electrical connection
Battery voltage for the strut actuators is supplied to the Electronic Suspension Control (ESC) module through the damper drive relay circuit. The ESC module energizes the damper relay by opening and closing an internal ground for the damping relay coil control circuit. The ESC module monitors the damper drive relay circuit and each strut actuator high-side and low-side drive circuits for fault conditions.