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Discussion Starter · #1 ·
I put gas in my car this morning and i'm not sure if I got the gas cap on tight enough. Anyway, after about 30 miles of driving my SES light comes on. I went to Autozone and had the codes read and they came up with:

PO171- fuel system for bank 1 is too lean
PO174- fuel system for bank 2 is too lean

I got gas at the same place I always get gas. I took off the gas cap and put it on good but my SES light is still on. Any suggestions on what to check next.

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