White blue oily smoke coming from exhaust

Hello, smoke from your exhaust is always telling you something about your engine performance. Depending on the color -- and possible related odor -- you can get some clues. Problem is - in this forum we can't see or smell the smoke! So, it's best to seek guidance from a local shop near you where this is possible. Even showing them -- perhaps without any cost up front - will give you some good advice. Check this link to find a shop near you: www.repairpal.com/repair-shops What is "check plugs" as an only code? I'm not familiar. What code was it? I do not sense any cause to think a fuel injector is of concern based on the description.