DTC P2088:00: Notes

DTC P2088:00	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	-
POSSIBLE CAUSE	OCV connector or terminals malfunction Short to ground in wiring harness between the following terminals: OCV terminal B-PCM terminal 2BG OCV terminal A-PCM terminal 2E OCV malfunction PCM connector or terminals malfunction Open circuit in wiring harness between the following terminals: OCV terminal B-PCM terminal 2BG OCV terminal A-PCM terminal 2E PCM malfunction
Courtesy of MAZDA MOTORS CORP.