My Chevy impala read code po171 bank 1

Question

I put on a new get value,a catalyst Calvert,and a thermostat.

Answer 1

HI there

A common cause for this code is also low fuel pressure, faulty mass air flow sensor or a vacuum leak on bank 1 of the engine. Basically the computer is either seeing to much air in the fuel mixture or to little fuel, so a bad fuel injector could also be the cause.