Hello,
In the diagrams down below I have included the factory diagnostic troubleshooting guide for your vehicle for Direct Trouble Code (DTC) P0171. Please go through this guide and it should lead you to the problem with your vehicle, allowing you to fix it right the first time, without having to throw parts at the problem, wasting time and money. Please get back to us with what you are able to find out.
Thanks,
Alex
2CarPros
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Tuesday, June 25th, 2019 AT 7:42 PM