The engine P0045 Code is a short description of the car engine and it is important to find the real meaning of the engine code. The engine code lets you know about the engine problem. The engine P0045 OBD2 is precisely mentions to the camshaft timing. In this case, if the cam timing is over-retarded, the engine light will be illuminated and the engine code will be set. The P0045 engine code is type of powertrain problem. However, do not follow the general meaning of the car engine. If you follow the general meaning, you may bring more problem in the car engine.