DTC P2090-00: OCV Circuit Low Input: Notes

DETECTION CONDITION AND POSSIBLE CAUSE

DTC P2090:00	OCV circuit low input
DETECTION CONDITION	The PCM monitors the OCV voltage. If the PCM detects the OCV control voltage (calculated from the OCV) is below the specification voltage (calculated from the battery positive voltage), the PCM determines that the OCV circuit has a malfunction. Diagnostic support note  This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Performs the exhaust variable valve timing control with a maximum cam retard request.
POSSIBLE CAUSE	OCV connector or terminals malfunction Short to ground or open circuit in OCV power supply circuit Short to ground in wiring harness between ENGINE2 15 A fuse and OCV terminal B ENGINE2 15 A fuse malfunction Open circuit in wiring harness between main relay terminal C and OCV terminal B Short to ground in wiring harness between OCV terminal A and PCM terminal 1AN PCM connector or terminals malfunction Open circuit in wiring harness between OCV terminal A and PCM terminal 1AN OCV malfunction PCM malfunction