FixVault

On Board Diagnosis Logic

The MIL will not light up for this self-diagnosis. 

NOTE: If DTC P1554 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to "ON BOARD DIAGNOSIS LOGIC ".
DTC DETECTING CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1554
1554
Battery current sensor performance The output voltage of the battery current sensor is lower than the specified value while the battery voltage is high enough.
  • Harness or connectors (The sensor circuit is open or shorted.)
  • Battery current sensor