Originally Posted by Danthurs
I'm wondering if your in limp home mode. Any other codes?
thats what it sounds like to me, was she smoking abnormally?
the codes come up to be
0404 EGR open position performance
0440 EVAP system fault
a little more on the EVAP fault from cardealerforums
A P0440 fault is general Evap system fault and could be as much as leaving
your gas cap loose. ( but you probably wouldn't admit to it anyhow.)
Assuming that the gas cap is tight and not hanging off there are a couple of
hoses that dry rot and could cause this fault to set, One is under the
vehicle at the Canister and the other under the air cleaner. There is also a
switch called the NVLD (Natural Vapor Leak Detection) that is supposed to
see a closed (sealed) input when the evaporative system is sealed and no
leaks are present. If this switch goes bad it will also set this fault code.
A scan tool would be needed to see this input. With mileage this vehicle has
I would lean towards the hoses being cracked causing your problem. If you
cant visual see any cracks in any hoses you may have to have a smoke test
performed along with a scan tool connected to verify the fault and diagnose