Multiple Error Codes
So my check engine light came on this morning and I had Auto Zone put a code reader on it. It came back with P0401 (EGR system fault) and P0174 (Fuel trim bank two condition), I picked up some fuel injector cleaner hoping that will take care of at least the P0174, but does have an idea of what to look for first? Sensor, valve, solenoid, other? It looks like this might be the first chance I get the actually use that Haynes manual I bought a couple of weeks ago.