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#55: 02-20-2013, 12:41 PM
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Originally Posted by aac0036 View Post
Just read your P0420 thread and I can't say if that's my code or not, but it came on as I was on the highway and at 3/4 tank. Don't remember where the tank is off hand, but it isn't past 1/2 and certainly not down to 1/4.
If its on and off its the P0420 most likely