A little history, just replaced the catalytic converter, exhaust manifold, and O2 sensor on my 04 Altima with a 4 cylinder. The check engine light went off for one day then came back on. I just got someone to check the code and it is P1274 Air fuel sensor 1 heater bank one. Also P0171 bank one system too lean.
Can someone help me with these? Will this have anything to do with the parts I just replaced? If not how hard will this be to fix. Thanks
Can someone help me with these? Will this have anything to do with the parts I just replaced? If not how hard will this be to fix. Thanks
