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Oil pressure gauge help...

ddcookson
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ddcookson Member

ddcookson

Posted
Posted

Hi

1998 996 c2 cab. 40000 miles.

After a couple of days of flicking my oil pressure gauge seems to be stuck just past the 5 marker.

My questions are:

1. Is this a common fault and can it be reset somehow?

2. Is this a gauge problem or could there be a problem with the car? ( no leaks or any characteristic changes with the car)

Any help on the matter would be appreciated.

wingless Member

wingless

Posted
Posted

This sounds like the gauge is getting power and ground, but not the signal lead from the transducer. It sounds like the connection from the transducer to the gauge is open circuit.

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Tool Pants Member

Tool Pants

Posted
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Posted

If the gauge is good then it is usually the sender unit on the engine. One of the electrical guys will have to figure out how you test the sender unit to see if that is the problem, but these cars are not known to have sender units go bad.

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Loren Member

Loren

Posted
  • Admin
Posted

You can read a fault code in the instrument cluster with a PST2 (or PIWIS tester) if there is an oil pressure sensor problem (fault code 9121).

Here is the troubleshooting tree...

post-2-1139506657_thumb.jpg

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