P 0420 Code any solution???
03-01-2008, 08:09 PM
#1
Instructor
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P 0420 Code any solution???
Just install a set of Headers and Hi Flow cats. Now the system is getting the "CEL" pull the codes and I am getting both P 0420 and P 0430.
Any solution to solve this problem? Car is running great but hate to see "CEL" pop up.
Any solution to solve this problem? Car is running great but hate to see "CEL" pop up.
03-01-2008, 11:08 PM
#2
Pro
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Not unusual to see this happen with aftermarket cats. Get a local tuner to turn off the test for the rear cats for you, if it does not interfere with emissions testing in your area.
03-02-2008, 07:16 AM
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Burning Brakes
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after a headers & hi flo (or no cats) install you should get a tune anyway in which the tuner can turn-off those rear 02 sensors that are now setting 420 & 430 codes, because of the increased exhaust flow...
