code 420 & 430
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Joined: Aug 2008
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From: Reno nv.
code P0420 & P0430
after I installed headers and cross pipe I drove about 40 miles and the check engine light W/ code 420 430 catalyst system is below threshold for the current operating conditions??? any ideas has this happened to anyone. There are no exhaust leaks Im pretty sure all the vacum lines are hooked up...
Last edited by erics1; Aug 31, 2008 at 11:56 PM.
Safety Car
Joined: Jan 2001
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From: Boise ID
If I recall correctly the rear O2 wires do cross, as in what appears to be the driverside O2 really goes to the passenger side. Then again, this is on the fat chance that I do recall correctly. :o
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Joined: Mar 2007
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From: Marlton. Increasing performance one speeding ticket at a time! NJ
after I installed headers and cross pipe I drove about 40 miles and the check engine light W/ code 420 430 catalyst system is below threshold for the current operating conditions??? any ideas has this happened to anyone. There are no exhaust leaks Im pretty sure all the vacum lines are hooked up...
I'd suggest erasing them. You'll probably see them pop up every now and again. You can live with it, or get the codes tuned out.
Sorry, but that's just going to happen with headers.
