Thread: P0421 Code
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Old 08-29-2010, 07:01 PM   #9
snicknc is on a distinguished road
Join Date: Aug 2010
Posts: 50

2002 VUE 3.0L
Default Re: P0421 Code

Well, did the non fouler mod. I also reconnected two vacuum lines that had become disconnected from the back of the intake.

Unfortunately, P0421 came back on, so I guess I'm down to changing out the pre-cat. Bank 1 is on the front of the engine, right? That's really all I can see it being at this point-- I'm not getting any more codes.


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