Q: bad fuel mileage on 2001 Dodge Grand Caravan

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Yes I still get these codes. There are two oxygen sensors the other reads bank two. The code I get is for bank one. thanks for the reply hope to get more info from you
(1) Answer
(1) Comments
If the P0172 code is set for one bank only, then the O2 sensor wouldn't be the cause. Check for vacuum leaks on that side (bank one) of the engine or a leaking injector.

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I just had it smoke checked and there were no leaks. I also changed a bad injector about a month ago the rest were fine. Was kinda wondering about the air charge sensor I think that is the name for it. Thanks