p0171 code what is the fix?

Question

Hi Reynaldo

In that case I was using regular unleaded almost for year, and now the question is how long it will take to clear the message.

Thanks in advance

Answer 1

Hi there,

This code is usually generated from a faulty O2 sensor or an intake vacuum leak. The fuel has very little to do with it. It is a lean fuel mixture code for bank 1. Normally you have to locate the source of the leak, then repair it to resolve the code.