The powertrain of the engine can be fixed without changing or removing parts. It depends on the problem. The automobile engineer can understand the meaning of the engine P0537 Code and follow all process for solving the car engine problem. If the meaning of the car manufacturer for the engine code is not followed properly, new problem may start from the car engine. You must not like to gain new problem in the car engine what may be costly for solving the car engine. You should not fix the car engine by immature engineer. You should test the car engine before receiving it properly.