I have 2013 Ford Escape. It is currently six years old. The check engine light comes on only when the weather gets nice. This issue has been weird and frustrating because
my car guy and I have not been able to figure out what is going on. We have replaced the thermostat, a new battery new filters, new spark plugs. I believe we also replaced the mass air flow senor
and the O2 sensor. The car runs fine expect for this check engine light. Any help figuring this issue out would be greatly appreciated.

Thank you

Update: Its not a check engine light. The light is Engine Fault. Service now.

 

have you scanned it for codes?

better than just throwing parts at it to scan and see what code it has

You can buy OBD2 code readers cheap

 

The car hasn't thrown any codes. Its been scanned with the light on and no code has popped up.

 

it is the "check engine light"....and not the "service engine soon" light, right?

what is the car doing...or not doing that is a problem?

 

Its just the "check engine light" other than that the car runs perfect. My car guy and I do preventive maintenance oil change, etc.
Its just this check engine light.

 

I had the same problem on my 2011 Ford escape.
check all of the fuse, I had one that was blown.
Replaced fuse and Engine Light went away.