DTC P2090-00: OCV Circuit Low Input: Notes
WARNING: This page is about a different variant/trim than selected.
DTC P2090:00 (PCM, VIN Y) DETECTION CONDITION AND POSSIBLE CAUSE
| DTC P2090:00 |
OCV circuit low input |
| DETECTION CONDITION |
- The OCV control voltage relative to the PCM control is too low. 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/Snapshot data is available.
- DTC is stored in the PCM memory.
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| FAIL-SAFE FUNCTION |
- Set the exhaust variable valve timing control to the maximum advanced position.
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| 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 1AS
- PCM connector or terminals malfunction
- Open circuit in wiring harness between OCV terminal A and PCM terminal 1AS
- OCV malfunction
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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