A while back I had a service engine light come on. Went to the local OReilies an they read it and let me clear it, A couple of weeks later it come back again. So decided if it was a problem to go to the dealer and get it checked out, (2 times in about a month) they reprogramed the ECM, I asked the service advisor what gives and they said that Nissan has a TSB that they have to do before they change out the mass air flow sensor, If the light comes on again then they can change the sensor, BUT I did notice one thing after all this is that the max has more power, faster acceleration and better gas mileage, When in cruise 70 mph, the thing spit out a 29.4 mpg. I bout flipped out. Never have I seen that on my max

 

Damn I want that code ......