Troubleshoot P0420 & P0430

[danielsatur]

2000 S TYPE 4.0 with 131K miles

Tbl with DTC's P0420 & P0430 ''Catalyst Efficiency problem on banks 1 & 2''

The down stream (Post) oxygen sensor sends feedback data to the ECU on how the Catalytic
converters are performing.

Root cause - Both CAT's were bad.

The one on the passenger side (Bank 1) was only 4 Months old,and the drivers side was original.

Note: All four oxygen sensors were replaced,because of Age and mileage.

See AF->Jaguar->S TYPE->Misfiring

I replaced two bad CAT's with Dec's from Catalytic coverter warehouse for $500 + $100 for the
install @ Local muffler shop.

http://www.catalyticconverterwarehouse.com

JAG service would of been a least $3K + All of parts & service to pin point the problem to the Root cause.


I designed the ACME AUTO Emissions Filter (AAEF)to fit on my Jaguar, so my emission parts dont' get contaminated with emission gunk.
See http://www.ideabuyer.com/ipavail/acm...issions-filter