Coolant pouring into oil after head gasket change.

[JReynaxd40]

So I got rhe Ex back together and runs beautifully had valve tic for about 5-10 mins but that went away think all the oil worked its way in. One bad thing is my checklight came on at about 8 mins in. The engine temp was good, oil pressure looked good everything sounded good. Any ideas? Pulled back into the garage and turned her off did the last oil change to get all contaminated oil out. Had all the fluids on the outside of engine burning off but that will go away adventually. Any ideas on that check light?

 

[JReynaxd40]

Ok so check engine light... I pulled a koer136R left bank lean... Any ideas did i smash an o2 sensor or something? Any Ideas anyone?