Question about 1999 Dodge Ram

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Engine code 522 dodge ram 4.7 engine

Getting this code. manual says it is low voltage to the oil pressure sending unit. How do I repair this? Does this mean that the sensor is bad?
I've just changed the camshaft sensor 2 days ago for a code that came up for that could this be related issues?

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  • pastulov Feb 18, 2009

    I believe it is PO522 I got this code from turning the ignition 3 times and got that code. Checked in the Haynes manual and that is what it told me. Low Voltage to oil pressure sensor.

  • pastulov Feb 18, 2009

    I should clarify that it is a 2003 dodge ram quad cab automatic 4x4 with a 4.7



  • yadayada
    yadayada May 11, 2010

    522 is not a code, is this P0522 a OBD 2 code?

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There are a few possible items but none really common right out the gate. The oil pressure switch will be the most likely problem. The other issues would be either wiring or PCM (engine computer). There is a test you can run but it requires a good scanner that can read the oil pressure state. The oil pressure guage is not connected directly to the oil pressure switch. The switch is a simple on and off switch. Once there is enough oil pressure the switch closes. The actual gauge in the cluster is operated by software based on engine rpm, temp and the oil pressure switch. Its an educated guess of the oil pressure. If you dont have the scanner than the first step I would recommend is replacing the oil pressure switch and disconnecting the battery and clearing the code.

Posted on Feb 18, 2009

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