DTC Detection Logic

DTC No.	Trouble diagnosis name	DTC detecting condition	Possible cause
P1551	Battery current sensor circuit low input	An excessively low voltage from the sensor is sent to ECM.	Harness or connectors (Battery current sensor circuit is open or shorted.) [CKP sensor (POS) circuit is shorted.] [CMP sensor (PHASE) (bank 2) circuit is shorted.] [EVT control position sensor (bank 2) circuit is shorted.] (APP sensor 2 circuit is shorted.) (EVAP control system pressure sensor circuit is shorted.) (Refrigerant pressure sensor circuit is shorted.) Battery current sensor Crankshaft position sensor (POS) Camshaft position sensor (PHASE) (bank 2) Exhaust valve timing control position sensor (bank 2) Accelerator pedal position sensor EVAP control system pressure sensor Refrigerant pressure sensor
P1552	Battery current sensor circuit high input	An excessively high voltage from the sensor is sent to ECM.