You need to find out the meaning of the car engine P1127 Code if you want to solve the car engine. The real meaning of the code is found from the car manufacturer. Read the car engine manual to know the real cause of the car engine problem. Because you will get real meaning of the code from the real meaning. However, you can use automobile dictionary meaning of the code for solving the car engine but it does not give proper information about the car engine problem. You should not allow any immature for solving the car engine problem.