This engine P1516 Code is a common engine code what is important thing. By the meaning of the code, you can know about the problem of the car engine and take step for solving the car engine. However, the engine code has automobile dictionary meaning and real. You must collect the real meaning first but if it is not available at first, then the general meaning (automobile dictionary meaning) can be used. The car engine should be fixed as soon as possible. Otherwise, you cannot drive the car properly or new problem in the car engine may start. An automobile engineer can fix the car engine safely.