Just bought a 99 Tahoe. A week after buying my service engine soon light came on. It was a p0161 code so I replaced the 2 of 2, 02 censor. Light came on five days later. Have heard that it may be my gas cap and not the sensor at all. Any ideas? Thanks
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- Thread starter Brondt
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east302
Full Access Member
Here are the diagnostic tables for that code. You could have gotten a bum part (I'd go with an ACDelco) or a bad wire somewhere. Check to see if any of the sensor wiring is rubbing against the frame or metal.
VCM connector C1:
VCM connector C1:
