OBD code P0420 - catalyst effficiency below threshold?

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Re: OBD code P0420 - catalyst effficiency below threshold? [Re: Dakota_Don] #1235914 05/19/12 05:54 PM 05/19/12 05:54 PM
Joined: Jan 2003 Posts: 6,816 Alton, IL D Dakota_Don master
Dakota_Don master D Joined: Jan 2003 Posts: 6,816 Alton, IL	also if you do change the 02s and the codes come back, test the back psi in front of the cat and compare it to the psi in the rear of the of the cat.. simple to do.. you can find the procedure on you tube

Entire Thread
Subject	Posted By	Posted
OBD code P0420 - catalyst effficiency below threshold?	392charger	05/19/12 06:24 PM
Re: OBD code P0420 - catalyst effficiency below threshold?	herkamer	05/19/12 06:34 PM
Re: OBD code P0420 - catalyst effficiency below threshold?	Dakota_Don	05/19/12 09:39 PM
Re: OBD code P0420 - catalyst effficiency below threshold?	Dakota_Don	05/19/12 09:48 PM
Re: OBD code P0420 - catalyst effficiency below threshold?	Dakota_Don	05/19/12 09:54 PM
Re: OBD code P0420 - catalyst effficiency below threshold?	72chargerz	05/19/12 10:37 PM
Re: OBD code P0420 - catalyst effficiency below threshold?	392charger	05/20/12 02:41 AM
Re: OBD code P0420 - catalyst effficiency below threshold?	kenworth_goose	05/20/12 02:49 AM
Re: OBD code P0420 - catalyst effficiency below threshold?	392charger	05/20/12 02:56 AM
Re: OBD code P0420 - catalyst effficiency below threshold?	herkamer	05/20/12 03:56 AM
Re: OBD code P0420 - catalyst effficiency below threshold?	Dakota_Don	05/20/12 08:24 AM
Re: OBD code P0420 - catalyst effficiency below threshold?	HotRodDave	05/20/12 04:39 PM
Re: OBD code P0420 - catalyst effficiency below threshold?	MoparMarq	12/05/12 10:54 PM
Re: OBD code P0420 - catalyst effficiency below threshold?	pnypwr	12/06/12 03:07 AM
Re: OBD code P0420 - catalyst effficiency below threshold?	therocks	12/06/12 05:19 PM
Re: OBD code P0420 - catalyst effficiency below threshold?	MoparMarq	12/06/12 06:58 PM
Re: OBD code P0420 - catalyst effficiency below threshold?	392charger	12/09/12 05:06 AM
Re: OBD code P0420 - catalyst effficiency below threshold?	MoparMarq	12/09/12 05:17 AM

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