Air/fuel dtc's Another diy intake, now with code p0171 :( The dreded p0171 code.
P0171 CHEVROLET – Fuel Trim System Lean Bank 1
Help needed with p0171 & p0174 running lean at idle. my fault!
2006 trailblazer with codes p0171- p0014 & p0506
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P0171 & p0174 funky trims
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