The engine problem can be serious problem and the problem can be very serious but the problem can be fixed. The car engine P1800 Code is found easily if the car engine tested. Oil pump can be a cause of the car engine problem and for that problem the car engine may become faulty. The powertrain of the car engine can be also faulty and it needs to solve as soon as possible. Otherwise, you cannot drive the car properly. The automobile dictionary meaning can be used for learning about the car engine problem but you must look for the real meaning of the car engine code.