This P255C Code is common in car engines and different car manufacturers has this meaning of code what has various meanings and the meanings of the code rely on the manufacturer to manufacturer. Even you will get a common meaning of the code online. Do not drive the car with the car engine problem and for solving the car engine problem depend on the right meaning of the code what is found from your car manufacturer. You must not use different meaning from any other manufacturers. Do not follow wrong meaning of the code for solving the car engine and it may make terrible situation in the car engine.