DTC P2091-00: OCV Circuit High Input: Notes

DETECTION CONDITION AND POSSIBLE CAUSE

DTC P2091:00	OCV circuit high input
DETECTION CONDITION	The PCM monitors the OCV current. If the PCM detects that the OCV control current (calculated from the OCV) is above the specification current, 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 PCM connector or terminals malfunction Short to power supply in wiring harness between OCV terminal A and PCM terminal 1AN OCV malfunction PCM malfunction