DTC P3404-00: OCV For No. 1 Cylinder Deactivation Circuit High Input (Us): Outline
WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
DTC P3404:00 (PCM, SKYACTIV-G, US) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
OCV for No. 1 cylinder deactivation circuit high input |
| Detection condition |
- A condition continues for a specified period of time in which the OCV control voltage or current for No. 1 cylinder deactivation relative to the PCM control exceeds the specified value.
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| Fail-safe |
- Inhibits the cylinder deactivation control.
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| Possible cause |
- OCV for No. 1 cylinder deactivation connector or terminals malfunction
- PCM connector or terminals malfunction
- Short to power supply in OCV for No. 1 cylinder deactivation control circuit
- Short circuit in OCV for No. 1 cylinder deactivation control circuits
- Open circuit in OCV for No. 1 cylinder deactivation control circuit
- OCV for No. 1 cylinder deactivation malfunction
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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