For solving the car engine problem, it is recommended to know the real reason and location of the car engine problem. When the car engine is tested, you will get engine code what is meaningful. The car engine P1237 Code is found when your car engine is tested. You will get the meaning of the car engine from different sources but your car manufacturer’s real meaning is accepted only. Read the car engine manual to get the real meaning. The automobile dictionary meaning of the code is not fully necessary to use but you can learn some information from this meaning.