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Front O2 ground

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Front O2 ground

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Apr 8, 2018 | 10:02 PM

#1

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Front O2 ground

Does anyone know where the front O2 sensors are grounded? Both of my O2s are randomly acting funny at idle. Everything is perfectly fine at WOT, but when going back to idle, the fuel trims randomly drop or spike 10%. Tuner thinks that the O2s are seeing voltage drops. I thought that I'd check their ground.

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Apr 9, 2018 | 01:04 AM

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You posted this is in stereos and electronics, You might have better luck in the PCM/Diagnostics Tuning section.

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Apr 9, 2018 | 10:16 AM

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The O2 sensors all ground through G112 which is attached to the rear of the left cylinder head.

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