Possible causes – Faulty Camshaft Actuator– Camshaft Actuator harness is open or shorted– Camshaft Actuator circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Faulty Camshaft Actuator– Camshaft Actuator harness is open or shorted– Camshaft Actuator circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Faulty Valvetronic Relay– Valvetronic Relay harness is open or shorted– Valvetronic Relay circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1057 BMW Description VVT supply voltage control motor electrical bank