Originally posted by brett64:
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I have replaced the lower bank one O2 sensor, still get PO172, so I switched it out with bank two's lower sensor, and I still get PO172.




P0172 has nothing to do with lower O2 sensors. Just plug in your scanner and drive the car for a while then download the info from the scanner. All the info on how to download the P/ID and freeze frame data is in the downloaded manual. Then post the data and more help will be coming. If you can't do that, then send it in for a one hour scan diagnostic and they will be able to tell you if you injectors are bad or whatever.


"Always do the cheap and easy ones first." 1996 V6 ATX 96K miles