FixVault

DTC Detection Logic

NOTE:

If DTC P1551 or P1552 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to DTC 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.)

  • Battery current sensor
P1552 Battery current sensor circuit high input An excessively high voltage from the sensor is sent to ECM.