LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 2009 >> Equator RMZ-4 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (VQ40DE) - (3 Of 5) >> DTC P1554: Battery Current Sensor >> On Board Diagnosis Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

On Board Diagnosis Logic

The MIL will not illuminate for this diagnosis. 

NOTE: If DTC P1554 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to .
DTC DETECTING CONDITION AND POSSIBLE CAUSE

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