This engine P1850 Code is an automobile language what tell about the problem of the car engine. You need to know the meaning of the code if you want to understand the meaning of the code and know about the problem. The letter P meanings powertrain and here the main problem is in powertrain what is necessary to fix. This problem can be fixed at low cost as no machine or tool is necessary to change or replace. An automobile engineer is perfect for solving the car engine problem and you must not try to fix the car engine. You may make create new problem.