DTC P1633:00 [MZI-3.7]: Notes
WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE
| DTC P1633:00 |
Keep alive power voltage too low |
| DETECTION CONDITION |
- Indicates the keep alive power circuit has experienced a voltage interrupt
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| POSSIBLE CAUSE |
- Connector or terminal malfunction
- Open circuit between battery positive terminal and PCM terminal 1V
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 Courtesy of MAZDA MOTORS CORP.
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