The engine P3488 Code lets you know about the car engine problem of yours. This code is found form the car engine of your car. So, you must not try to solve the car engine if you do not know the meaning of the code. However, the right meaning of the code is necessary to know. The powertrain of the car engine is not working properly in your car engine and you need to fix this part but you do not need to change any part or add any part in the car engine. If you do not know how to fix the car engine, then do not try to solve the car engine.