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How to fix P0171 code

P0171 is a diagnostic trouble code that means the engine’s air-to-fuel mixture on Bank 1 is too lean, with too much air ...
Acura reports that some 2007-08 TL Type S models may turn on the check engine light and store trouble code P0171 and/or P0174 in the PCM. If there are no drivability symptoms associated with the ...