Albertaktm

When hauling my 1500lb empty trailer with Tow Haul mode off Everything works fine. I loaded a 1500 lb side by side and thought ok 3000 lbs, i should use tow haul mode. It threw the p0101 MAF code. I cleaned the sensor upside down on a clean shop towel. It wasn’t very dirty but dropped 1/2 can of MAF cleaner open it anyway. The air filter was 8/10 for cleanliness Replaced that as well. Cleaned a slight film off ther face of the butterfly. Put it together. Same thing. Throws a p0101 code in tow haul mode. Take it out of t/h mode while towing the 3000l lb load, No code. Shifts smoothly. The only thing I haven’t done is select tow/haul mode with no trailer. Any help would be great.