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2014 lml p0420 code

25K views 40 replies 9 participants last post by  CMonclova1 
#1 · (Edited)
I am on a road trip that started in south Georgia and I am on my way to Shiocton Wisconsin. I am towing an 18 ft flatbed trailer with a light load. 3000lbs including trailer. There are no mods on the truck. I am half way through my last tank of fuel.

I stopped at rest area and when I started the truck everything appeared fine. I saw the check engine lamp come on. I pulled off the highway to check fluids. Not finding anything, I drove on to a safer place to take a look and get my code reader that was packed away.

I came up with these codes:
P0420 three times.
P220b
U029d
U029e
P2610

I will attempt to clear the codes with my tool but I think a couple are permanent codes.

I'd like to know if I can continue to drive. Am I looking at a possible breakdown? Or is this just an emissions related issue?

Any information will be appreciated. Getting back on the road in 24 hours.
 
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