When the car engine is not working properly, it is important to know the cause of the car engine problem. Solving the car engine minor or major problem should be fixed properly. When this car engine will be tested by the car engine code reader and the problem area code will come up related with the car engine problem. The car engine P2842 Code is found from the car after engine is tested and finding the real meaning of the code helps to solve the car engine problem. If you find the car engine is fully ok, you may use this car for a test drive.