2004 Dodge Ram 1500
Problem for Dodge 2004 Ram 1500

Check engine light on codespo404 andpo406




By obmecju on Nov 04, 2009

" "
check engine light on codespo404 andpo406

Solution #1

posted on Nov 04, 2009
Not Rated)

Imaginex

Rank: Guru  Cars  Expert
Rating: 88%, 178 votes
Hello and thank you for using Fixya.com. Your codes the computer is throwing have to do with the evap or emissions for your truck. The most likely cause for both of these codes to come up is the EGR valve needs replaced due to being clogged. The other likely cause is the gas cap being loose or not fitting correctly.
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