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P0463 is a standard OBDII code for "Fuel Level Sensor Circuit Voltage High" On a Rodeo, this typically means your gas gauge is broken (or in process of breaking) see the following forum for more info http://forum.planetisuzoo.com/viewtopic.php?t=6920&highlight=fuel+sender http://forum.planetisuzoo.com/viewtopic.php?t=579&highlight=bigpoppax2 P0304 is standard OBDII for "Cylinder 4 Misfire Detected" This is likely a separate issue. I believe I had a similar code after replacing the spark plugs. Replacing the new Bosches with Densos fixed the problem. The computer is tuned for Densos and NKGs and frowns upon most others.

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Q: What do these diagnostic codes mean on a 2001 Isuzu Rodeo P0304 and P0463?
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