The P0037 Code is an important thing and it is necessary to use for solving the car engine. The P0037 OBD 2 code on cars with automatically measured automatic broadcasts, the 3-4 shift solenoid is accountable for activating the hydraulic tours to start clutches or bands that modification gears inside the auto transmission. Following the manufacturer’s meaning for the code is a great idea for solving the car engine problem. P denotes the powertrain Code and the problem is linked engine, transmission and emissions system. However, you have found real meaning of the code and you have idea how to solve the problem, you can try to solve the problem.