The P0181 code should not be showing on your
particular vehicle. That code is for Natural gas vehicles. Your vehicle
does not have a fuel temperature sensor. As for the other codes, the 7E5
and 1FE, those are strange also. You could possibly have a problem with
your code reader. Try to use a different reader maybe at a auto parts
store or a local shop. If those codes are still there, then you could
have a problem with your pcm. For some reason it could think that the
vehicle is a natural gas vehicle. Has the vehicle been struck by
lightning or been jump started recently? Something could have caused a
spike in the electrical system and caused it to go haywire.
That code does not apply to this vehicle.
However, sometimes a code reader will show a code incorrectly,
especially if the code reader was a non-professional, home-user type
unit. I have heard of people having a P0171 code show up as a P0181.
is a TSB (Technical Service Bulletin
) for the P0171 code, and it
details a pretty common problem that develops over time. I would suggest
treating this as a P0171 code.