Ok hopefully someone can help! I have a 2011 f250 that I replaced the mirror now I get a P0073 code. The mirror came off my other 2011 f250 so I switched the sensor out with the mirror I had taken off my truck and still get the code. Now the weird thing is it will reset after the vehicle starts but as soon as you shut the vehicle off it goes back to -40. Never had this code until I swapped out the mirror.