You need to know about the car engine if you want to fix the car engine properly by yourself. The engine code lets you know about the problem of the car engine. So, you need to know how to find the real meaning of the code. For your car engine, I have found the car engine P0873 Code when the car engine is tested by the engine code reader. If meaning of the code is not found, do not try to fix the car engine with the wrong meaning. However, when the car engine is ok, then you will drive the car but without a test drive do not accept it.