Tundra 2008 check engine sign

Asked by Aaamir84 Nov 16, 2017 at 02:02 PM about the 2008 Toyota Tundra SR5 Double Cab 5.7L 4WD

Question type: Maintenance & Repair

Hi. Inhave tundra sr5 2008.  Check engine sign in
deshboard is always on and I hate it. Any idea how to get
rid of it plz. Thanks

2 Answers
20

trustytundra answered 6 years ago

Had the problem on my 06 SR5. Scanner gave emission related codes. Turned out to be the locking gas cap that wasn't seated correctly.

2 people found this helpful.
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GuruZXC11 answered 5 years ago

Mine was caused by overfilling gas tank, of course the dealer sold me (3) gas caps before I started experimenting and discovered it was small amounts of fuel getting into the evap system hoses. I only filled to 3/4 or till hose clicked off without topping off, and after (2) tanks I was able to reset light with OMB-!! ready and it hasn't occurred in 2 years. On my 04, I had same issue, but discovered the hard way only use dealer non-locking caps, the locking ones leak thru the locking mechanism after a short while, and non dealer caps fail way more oftern.

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