Thread: P0138 Fault
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Old 30 Jul 2009, 09:06 pm
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CREWZIN CREWZIN is online now
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Default Re: P0138 Fault
Welcome to the forum Joe.

I'm not sure what a HEGO circuit is but the P0138 for your PT should be the upstream 02 oxygen sensor. If it's really bad I guess it could cause your symptoms but then there's a lot of other things that can cause a rough idle and shaking including plugs and wires.

Here's something to read while your waiting.

http://www.motor.com/magazine/pdfs/032008_02.pdf

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Last edited by CREWZIN; 30 Jul 2009 at 09:10 pm.
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