The engine code has automobile dictionary meaning what gives general information of the car engine. The car engine P1790 Code bears some information of the car engine problem and by the meaning of the code, the automobile engineer can know about the car engine problem. If the problem is general, then it is very easier to solve and some problems can be solved at cheap rate. In some cases, you do not need to add or remove any parts or component with the car engine. The car engine problem should be fixed as soon as possible. Otherwise, it may get more serious problem in the car engine.