[bmwNewbie2006]

Hello all I hope you are doing well!

My 2008 BMW 335i is giving codes: P0305, P0306, P0300 (all misfire codes, but also giving P0036 which is heater control circuit bank 1, sensor 2)

I really need help diagnosing what is causing these codes.

To explain what happens with the car, under regular driving the engine performs fine and runs great, however sometimes when driving on the highway or under acceleration there seems to be a boost cut or something of the sort and the car goes into limp (it doesn't last, it seems random when it enters and exits limp mode).

The two things I'm thinking of are PCV or failing HPFP, however upon further research I am not really witnessing any of the symptoms of a failing PCV (no smoke coming from the exhaust, idle isn't bad) however at the same time I'm not entirely sure if it's the HPFP failing.


Any and all help is much appreciated, thank you in advance.