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P0641 code and oil pressure fluctuating! Help

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Old Jun 3, 2013 | 09:34 PM
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Default P0641 code and oil pressure fluctuating! Help

Did a search and not much turned up. Getting reduced power and went to dealer and got this code and the oil pressure goes from 10-30 psi constantly. What sensors are powered by this circuit? thanks in advance
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Old Jun 3, 2013 | 09:58 PM
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That's a rare one. I didn't even remember seeing it before so I had to search too.

It appears there is no easy out on this one. It covers multiple things and you have to follow the diagnostic guide in the service manual which is at least 2 pages.

I see you resurrected this post with the same basic info:

http://forums.corvetteforum.com/c6-t...ced-power.html


I found this one that pretty much confirms it. Notice it's 8-years old:

http://forums.corvetteforum.com/c6-t...in-new-c6.html
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Old Jun 4, 2013 | 06:04 AM
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thanks, have a couple ideas from another post. Could be oil pressure sensor wiring or sensor itself.
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Old Jun 7, 2013 | 10:59 AM
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finally figured it out. Traced it back to one of the harnesses by the sump tank in engine compartment. There is a wire loose it the harness itself.
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Old Jun 7, 2013 | 12:27 PM
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Wow. Nice detective work.

Any chance you can post a pic of the offending part or a parts diagram to ID it?

Thanks for posting the update anyway.
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