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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Code 31

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Old Dec 13, 2010 | 06:23 PM
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Default Code 31
I'm throwing a Code 31. What is this?
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Old Dec 13, 2010 | 06:29 PM
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Originally Posted by teejay37
I'm throwing a Code 31. What is this?
Sounds like an oxygen sensor code.
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Old Dec 13, 2010 | 06:42 PM
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31 cam position sensor fault
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Old Dec 13, 2010 | 06:42 PM
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Found it:
31 cam position sensor fault

What could be the problem?
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Old Dec 13, 2010 | 10:20 PM
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Man I was way off...

I don't recall which years had it, but some years of the Series 1 3800 had a common failure of the camshaft sensor magnet.
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Old Dec 13, 2010 | 11:00 PM
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Well, start with checking the wiring. If that'* all ok, then changing the sensor may be in order.
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Old Dec 13, 2010 | 11:28 PM
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Okay. That'* what I was thinking. I mean it is a 93 so it'* probably about time for stuff to start going bad.
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Old Dec 13, 2010 | 11:28 PM
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Where'* it at?
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Old Dec 14, 2010 | 12:14 AM
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Not positive on a series1, but should be on the passenger side, under the water pump.
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