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Hi guys i am getting a pcode P0171 running lean on bank 1. Is bank 1 on the passenger side? is this code the upstream 02 sensor or should i be checking other things as well.
Thanks
The first thing to check is the 90* vacuum connections at the intake manifold, the one at the rear of the manifold is the most likely problem. They usually come apart in the inside of the elbow. Autozone has the part in the "Here's Help" section.