My 2009 g37 ended up getting a used motor put in after the previous one had some serious knocking issues that wasn’t salvageable. So I got the next motor in and I’ve been in and out of limp mode ever since. First I had some codes for the O2 sensors and the sensors for the throttle body it was fine for a few days now I am stuck with a p1093 code an p0300 and stuck in limp mode again. I still have the old motor which died strictly for a mechanical failure. Any suggestions on things I should swap off my old motor? I am a single father and I really need this car and getting a new car isn’t an option right now.

 

It ended up being the dc motor on top of the actuator. Internal broken electrical connection