With the car engine problem, you should not think to drive the car. The car engine problem is a serious problem what you cannot consider for long time. That is why, you should check the car engine and solve the problem. I think that you are not perfect to check and solve the car engine problem. You should test the car engine in a place where you may get help from an automobile engineer. The car engine code will be found by the car engine test and it will be easier to solve the problem. The car engine P1641 Code is found from the car engine.