View Single Post
#7: 02-06-2013, 09:39 AM
mnstrmech's Avatar
Title: Contributor
Location: South Bend
Car: 1993 legacy wagon
Posts: 406
iTrader: (0)
Send a private message to mnstrmech Find all posts by mnstrmech Reply With Quote
actually, being an ASE technician for the last 10 years, a p0420 IS a dead cat, 99.99% of the time. If your downstream O2 sensor is bad, then you get a p0139 B1S2 O2 slow response code pops up.

Last edited by mnstrmech; 02-06-2013 at 08:26 PM..