The engine’s powertrain problem is easy to fix and that is why, you may not need to change any part from the car engine. The engine P0630 Code starts with the P and it means that the powertrain of the car engine is problematic. Do not drive the car if the car engine has major or minor problem. You should take step for solving the car engine and then you can drive. A test drive is very important thing before allowing the car. When the car engine is ok, then you will allow the car for a test drive and if everything ok, you can use it.