Possible causes – Dirty Oil– Faulty Valve Timing Control (VTC)– Low engine oil level– Valve Timing Control (VTC) harness is open or shorted circuit.– Valve Timing Control (VTC) circuit poor electrical connector– Damaged ECM Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Possible Lack/Loss of power– Possible Engine rough idle P0012 HYUNDAI…