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P2A00 - A/F Sensor Circuit Range/Performance (bank 1 sensor 1)

Originally Posted by ANMVQ Well the first thing I thought was a pre sensor air leak? You looked at that gasket already but can see the whole thing ? Can

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Old 08-20-2014, 08:22 AM   #3 (permalink)
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Originally Posted by ANMVQ View Post
Well the first thing I thought was a pre sensor air leak? You looked at that gasket already but can see the whole thing ? Can you get your hands on a mirror stick and look up there? you can also try sticking a piece gasket down there and rev the car and see if there is any exhaust coloring on it? Paper might work too but not sure if it catch fire with the exhaust temps( Piping)

you can also use the soap water test on the intake pipes , Spray the connecters down ?
I tried my best with my mirror but there is just too much stuff in the way. It came on last night on my drive home and I didn't have enough time to start tearing the car apart and have it back together for work this morning.

The gasket in question is post sensor. So unless there is a leak at the header itself, any pre-sensor leak would have to be in the intake piping. Correct me if I'm wrong but the leak would also need to be post-MAF sensor. Also if I had a leak post-sensor I would expect to pick up a change in my Innovate which is in the downpipe.

The gasket/paper idea sounds good. I'll have to see if I can get something in there.
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