The powertrain of the engine P0437 Code is problematic and it needs to fix. The engine code lets you know the information of the car engine problem. The engine code has general and common meaning. You must not take the car general or common meaning for solving the car engine. However, the engine code has automobile dictionary meaning and the automobile dictionary meaning of the code provides some information what is correct. The manufacturer of the car provides the correct meaning and you need to find the meaning of the code according to the brand name of the car. When the car engine is fixed, a test drive is recommended.