001Stunna
Well-Known Member
Ok! Let me know how it goes!
I'll go ahead and predict the future. He will put it on and the p0420 code will go away and not come up anymore and his rear o2 sensor will read a flat .4-.5v no matter what.
Ok! Let me know how it goes!
Alright so after 9 starts/drives/shut offs, 75 miles under 45 mph and roughly 45 hghwy miles over 70 mph, at 118 miles the CEL p0420 came back on.
Things ive done:
Fixed leak
Backed out CAT o2 sensor with nonfouler
Keep in mind i have a highflow CAT.
Things I havent done:
Replaced CAT o2 sensor
Put original CAT back on.