Codes U0401 and P0300?

The car listed above is a 2013 gt500 that at this point has been returned to stock. I had put a Steeda CAI on the car. Last year the car had been going into limp and had emission codes which was confusing because it has always been well maintained so I took it to a mechanic nearby who had the car for a few days. He told me “The car runs like a scalded dog until it doesn’t, he didn’t understand“. He replaced the intercooler water pump, charged me $1,300 and the car was no closer to being fixed. So, then I took it to another place and thought it may be the tune but that wasn’t the problem either. So, I started reading SVT forums and saw that a certain plug was a known issue. So, I checked the plug it was burnt and looked like it had been arcing. I have no idea why the first guy didn’t check it, but I know he didn’t because it fell apart when I disconnected it. That plug is the one that is in the MAF wire harness that plugs into the huge 14290 harness so instead of splicing it I replaced the 14290 harness, so that all the plugs on it would be good and I also replaced the MAF harness. So, after that I thought it should be fixed and it as for the most part, I’m only left with U0401:81-0a code and p0300 code. The U0401 code is supposed to be the IPC code but the IPC looks to be working. So now it gets to the really confusing part I ran another scan with the think car scanner I have, and it is telling me the car thinks it is moving when it isn’t I ran the scan KOEO while the car was parked with e brake on, and it is telling me all 4 wheels are saying they are going.62 MPH, and the yaw rate keeps fluctuating. Attached is a screen shot of the data stream KOEO.