The engine let you know about the car engine problem and the engine P0177 Code also tells about the car engine problem. According the meaning of the code, you need to take step for solving the car engine problem. The car manufacturers setup the meanings of the code and you need to follow those meanings for solving the car engine. Do not drive the car with any problem in the car engine. If the car engine is not fixed, do not drive car. You need to ensure your security first. That is why, you should take help from expert engineer and a test drive is necessary when the car engine is fixed.