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.