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#219104 - 05/05/13 10:44 PM Code 0420
timwhite Offline
Junior Member
Registered: 09/21/09
Posts: 5
Loc: Goose Creek, SC
2002 GPGT 3.8 vin K. I got a 420 code that won't go away. I've replaced both O2 sensors(generics from RockAuto and then with Bosch) and also the convertor, upper and lower intake gaskets with a new plenum and all the related gaskets. plugs/wires are recent. no drivability issues. I clear the code...It comes back in 10-14 days. A buddy of mine said he had the same issue with a Toyota at his garage. It took original dealer O2 sensors to correct.

Thoughts and Suggestions?


Edited by timwhite (05/05/13 10:46 PM)
_________________________
Thanks, Tim
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Code 0420 timwhite 05/05/13 10:44 PM
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