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Old 10-07-2008, 10:20 AM   #1
VFX
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Join Date: Nov 2007
Location: Canada
Posts: 42
Error code P.0421?

Hi

This morning my '05 987 generated a CEL so I scanned to get a code...

It gave a P.0421 code with the following error.

WARM UP CATALYST BELOW THRESHOLD

BANK 1

Has anyone had this before?

Will it mean a new cat?

Thanks,

VFX.

.

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Old 07-18-2016, 06:52 AM   #2
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Join Date: Jan 2015
Location: England
Posts: 13
Garage
Bank 2

Hi VFX,
I am the newish owner of 2005 987 3.2 and would like to know if you got this sorted?
Was it a catalyst issue that meant a replacement?

Do you happen to know what the error code is for BANK 2?

I have been to 2 garages and i forgot to ask as my motor generated a CEL and i have no scanner but both have said Cat issue and need replacement, but the car seems to be driving fine.

Thanks for any help

Z4oldie is offline   Reply With Quote
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