DTC Detection Logic

NOTE: If DTC P1078 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to "DTC LOGIC ".

DTC DETECTION LOGIC

DTC No.	Trouble diagnosis name	DTC detecting condition	Possible cause
P1078	Exhaust valve timing control position sensor (bank 1) circuit	An excessively high or low voltage from the sensor is sent to ECM.	Harness or connectors [EVT control position sensor (bank 1) circuit is open or shorted) Exhaust valve timing control position sensor Crankshaft position sensor (POS) Camshaft position sensor (PHASE) (bank 1) Accumulation of debris to the signal pick-up portion of the camshaft
P1084	Exhaust valve timing control position sensor (bank 2) circuit		Harness or connectors [EVT control position sensor (bank 2) circuit is open or shorted) [CKP sensor (POS) circuit is shorted.] [CMP sensor (PHASE) (bank 2) circuit is shorted.] (Battery current sensor circuit is shorted.) (APP sensor 2 circuit is shorted.) (EVAP control system pressure sensor circuit is shorted.) (Refrigerant pressure sensor circuit is shorted.) Exhaust valve timing control position sensor (bank 2) Crankshaft position sensor (POS) Camshaft position sensor (PHASE) (bank 2) Battery current sensor Accelerator pedal position sensor EVAP control system pressure sensor Refrigerant pressure sensor Accumulation of debris to the signal pick-up portion of the camshaft