DTC P2089:00: Notes

DTC P2089:00	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	-
POSSIBLE CAUSE	OCV connector or terminals malfunction OCV malfunction PCM connector or terminals malfunction Short to power supply in wiring harness between OCV terminal A and PCM terminal 2E OCV power supply circuit and signal circuit are shorted to each other PCM malfunction
Courtesy of MAZDA MOTORS CORP.