I have a 2012 G37X with a random problem. Every now and then the car starts and suddenly shuts off. I get two codes P1239 $07E8pd and P1239 $07E8. I am not sure what is going on it just started doing this one day out of the blue. I only have 105k on the car. can anyone point me in the right direction to fix this?

 

P1239 points to the drivers side throttle position sensor or associated wiring.