DTC Detection Logic

DTC No.	Trouble diagnosis name	DTC detecting condition	Possible cause
P0078	Exhaust valve timing control solenoid valve (bank 1) circuit	An improper voltage is sent to the ECM through exhaust valve timing control solenoid valve.	Harness or connectors (Exhaust valve timing control solenoid valve circuit is open or shorted.) Exhaust valve timing control solenoid valve
P0084	Exhaust valve timing control solenoid valve (bank 2) circuit