Hey Mini experts out there. Just getting into these vehicles. I just bought my son a 2009 Clubman (non-S). Just changed the Cat/Exhaust manifold & both O2 sensors about a month ago. Car is running great now, but then yesterday and today I'm getting Check Engine lights for MULTIPLE codes. The car runs great, no chugging or smoke or hesitation. No weird noises or knocks, nothing out of the normal. I can reset the codes and it will take about a day for them to return, the exact same codes.Where should I even begin to start troubleshooting??

Here are the codes: P0100, P0013,P0010, P0444, P0597, P113b, P0458, B2aaa.

 

These codes are pointing to thersmostat, MAF, and exhaust vanos solenoid.
Check the sensors plugs and check coolant temps. Perhaps something isn't tight enough.