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That is a whole lot of issues that needs an auto electrician and a pro grade scan tool computer. We have a pro electrician here @Jeff Armer and hopefully he will chime in. Sounds like a communication issue with BCM and ECM which I think is combined into a TIPM.
Try unhooking your battery. It should reset the light. If that doesn't work it could be the relay again. I have had that happen to me with my 2001 Expedition. Was told it was caused by me giving someone a jump and it caused the service engine soon come on.
You can get the silicone grease at automotive and hardware stores. Apply to rubber seal on cap about every 2 to 3 months. This will ensure a seal so that the engine light doesn't come on. Worked great on My 2008 Liberty.
Do you have your manual? If not it should reset if you stand near the vehicle's engine compartment (2-3 feet) and press two buttons simultaniously. You should hear an audible beep or doors should lock. Hope this helps!
If your engine light came on, the engine module could have stored a code.
You need to have a scanner to check what code it is and that will point you toward the solution.
Possible causes could be (crank sensor, tps sensor or oxygen sensor).
Don't go replacing parts until you scan the vehicle for codes first.
I have to same problem
I just change 1 of the o2 sorsor
But 1/2 later still light up..
Now I just use regular gas ,and if the light light up to just go for a 20 min hyw ride.
And don`t let engine ide to long carbon up the sorsors
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