LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3 With TC] >> DTC P2088 >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P2088: Notes

DTC P2088 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2088 OCV actuator circuit low
DETECTION CONDITION 
  • PCM monitors the OCV voltage. If the PCM detects that the OCV control voltage (calculated from OCV) is below the threshold voltage (calculated from battery positive voltage), the PCM determines that the OCV circuit has a malfunction.

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA is available.
  • DTCs are stored in the PCM memory.
POSSIBLE CAUSE 
  • Poor connection of connectors at the PCM and/or OCV
  • Short to ground in the wiring harness between OCV terminal A and PCM terminal 4S
  • Open circuit in the wiring harness between main relay and OCV terminal B
  • Open circuit in the wiring harness between OCV terminal A and PCM terminal 4S
  • OCV malfunction
  • PCM malfunction
G04324137Courtesy of MAZDA MOTORS CORP.