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10-15-2020, 10:37 PM | #1 |
Drives: 2007 Auto Hatchback Join Date: Jan 2017
Location: Locust Grove, VA
Posts: 7
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Getting a P0171 code even after taking it to the shop
So about two weeks ago my 07 Yaris Hatchback's check engine light came on throwing code P0171 (System Too Lean - Bank 1). I made an appointment for a diagnosis with a local shop that has a good reputation. My MAF sensor is three months old so they said that wasn't the problem and then recommended a smoke test to find any leaks. They couldn't find a single leak so then recommended I replace both O2 sensors. I also had a new muffler installed which is unrelated to the code, but it was time for a replacement as my old one was getting crazy loud. Anyway, I left my car with them Monday and picked it up yesterday.
To be honest, it runs better now then it did when I bought it a few years ago. Much quieter with a bit more pep although it's still slow as hell since it's a Yaris. I thought everything was fine, but the check engine light came back on with the same code on my way home from work today. I called the shop back and made an appointment for Monday morning. I'll leave it there for the day as I have to work. Also, the mechanic mentioned something to me about using a bottle of sea foam fuel injector cleaner before I ended up agreeing to the new O2 sensors. Should I try that before I take it back in Monday? Any idea what else it could be? I'm $750 poorer now because of this issue so any advice would be greatly appreciated. |
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