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Originally Posted by root_werks
Paulv,
It's just a guess on my part, but after replacing all 4 O2's now and all the other CEL's gone with only the P0430 present. I can now test and pass all 4 O2's so I am hoping it's just a bad Cat. I would assume so since the PO ran with faulty O2's for almost 3 years! I'm sure the Right Cat is clogged (ruined) and the left isn't far behind.
I found a pair of good low mile cats for $350 shipped to me. The 4 O2's, MAF, 2 front tires and lots of other little maint items have left my Porsche fund a little dry. Gotta water the money tree for a bit. Meanwhile, I'm trying not to drive the car much.
Upates to come....when I get some more money.  |
That code is for Bank 2 which is the driver's side (Bank 1 has the #1 cylinder in it and would have the P0420 code). If you have a buddy who owns or has access to an exhaust gas analyzer, you could measure all the gases (NOx, CO, HC, O2, CO2) before and after the Cat to prove it bad (or good). BTW, running with bad O2 sensors will make the car perform lousy as well as destroy the cats. Attached a little tutorial about exhaust gases.
Regards,
paul...