DTC P2090-00: OCV Circuit Low Input: Notes
DTC P2090:00 (PCM, SKYACTIV-G 2.0) 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 ENGINE4 20 A fuse and OCV terminal B
- ENGINE4 20 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 1CO
- PCM connector or terminals malfunction
- Open circuit in wiring harness between OCV terminal A and PCM terminal 1CO
- OCV malfunction
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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