It is normal for the brakes to go down about 4 inches when starting the car with foot on the brakes but not for the brakes to go to the floor. If it goes all the way to the floor...
You're getting into an area that is kind of a dark art when you're getting these kinds of codes. While I don't know any of the symptoms that the car is exhibiting, I can tell you that failure in one...
Hi there: When a vehicle enters limp mode, it's due to a mechanical fault discovered inside the transmission or other driveline components. The only way to have this problem resolved is to have a professional mechanic complete a check engine...