You need to confirm that the car engine is fully ok for safe driving. The car engine P2406 Code let you know about the car engine problem and the car engine code has appeared on the car engine code reader after the car engine test. The engine problem can be serious and it can make terrible accident in your life. That is why, you need to confirm that the car engine is fully ok and you can use it properly. You must check and solve the car engine problem by an automobile engineer and make sure the engineer is very expert in this issue.