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Q: bad fuel mileage on 2001 Dodge Grand Caravan

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
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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
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