Engine Code

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07-21-2008, 09:46 PM

lblackneon

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Engine Code

My car just started showing the code P0138-O2 SENSOR 1/2 VOLTAGE HIGH. It's never done that until recently. It has only been on a few times in the past week or two. Is that bad or is it nothing to worry about.

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07-22-2008, 12:03 AM

AWH

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RE: Engine Code

Have you ever replaced your o2 sensor? It probably needs replacing.

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07-22-2008, 01:31 PM

lblackneon

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RE: Engine Code

Hmm. That's a possibility. With my Stage 2 pcm, it should bypass that sensor.

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07-22-2008, 04:38 PM

PSI Chick

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RE: Engine Code

not if it's the upstream sensor that went bad. the staged ecu's only make the downstream sensor go stoich.

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07-23-2008, 03:01 AM

AWH

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RE: Engine Code

Yeah it's worth a try. They don't cost that much and it's easy enough to do yourself.

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07-23-2008, 11:35 AM

lblackneon

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RE: Engine Code

Okay. Thanks guys!

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