Originally Posted by CADeBot
I actually have 3 codes present.
172 - HEGO (H02S) sensor fault/lean
332 - Insufficient EGR flow detected
632 - Overdrive Transmission Cancel Switch/ no action during self engine run test
Also, would it be okay to just put some seafoam in the vac lines? I do not want to have to change the oil and I poured some fuel injector cleaner into the gas tank already.
If o2 has more than 60K, I'd replace it for the sake of improving MPG alone.
Insufficient flow could also be the EGR stuck, or the Vac Diaphragm of the EGR is leaking.