2001 Jaguar S-Type emissions

2001 JAGUAR S-TYPE
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T CARTER
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Engine Performance problem
2001 Jaguar S-Type V8 Front Wheel Drive Automatic 161k miles

failed emmisions testing computer code P0420 catayst Sys Efficiency Below Threshold (bank1) and code P0430 Catalyst Sys Efficiency Below Threshold (bank2) engine was serviced prior to testing plugs,boots,coils and belt Engine light on also
Feb 26, 2009 at 8:44 AM
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RACEFAN966
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Ok before spending tons of money on cats you should do a couple of pin tests. I can walk you through them but you will need a digital multi meter. Get back to me and let me know if you want to do that and I will get the pin test procedure and we will go through them.
Feb 26, 2009 at 11:17 AM