I left my trailer hooked to my truck for the last week and the brake-contoller caused the battery to go dead... So i jumped it and now the check engine light is on... Its throwing code number p0406??? Anyone know what that means??
I had the same code a few months back. Your EGR is getting clogged up with soot. If you take it to the dealership they will need to pull the EGR tube and clean everything out. Takes about an hour and is covered under warranty. It is also a soft code so no worries driving with it on for a bit if you need to.
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