Been trying to trpuble shoot the ac last few days. Nothing apprear to be worng... compressor good. Fuses...good... trst shoes refridgersnt is high in theee... what gives?? It was working 2 weeks ago

? And today as I drive it to store it accelerated above. Normal speed...without hitting the pedal it was coasting about 45kms.. . As I drove it I noticed it was lagoon n bogging out around the 40-65 kms.. . Put it in manual on way home to find out as it was on 1st it jumped to 3rd. No warning or no faults showed up on testing it. But now it has engine light so will test again...
Gonna be easy fix or. Costly?? :( horrible timing for this
Anyways. That's what I can. Thonk of so far...

Cannot do self test. Engine light does not come on when key is turned on cooling system is not flowing correctly. Cannot read any codes due to no power.

So I have a check engine light on. When I hook up my diagnostic tool it tells me grille shutter not working. I have already check to make sure there is nothing blocking it from opening and closing. My question is there a fuse for this that could have blown?