RV shows a serious exhaust system failure.

Causes and treatment methods of exhaust system failure: 1, the fuel in the engine is not burning well, so it is necessary to replace high-quality fuel and clean the throttle; 2. The quality of gasoline used is not good, so it is necessary to replace the gas station to add fuel; 3. The low carbon at the top of the engine piston is cleaned; 4. The oxygen sensor of the vehicle is out of order and needs to be replaced. The failure of the engine exhaust system indicates that there is something wrong with the engine parts of the vehicle, and the alarm light of the engine lights up to remind the owner that it is necessary to check the engine parts. Engine exhaust system fault light, also known as engine fault light, will light up the indicator light on the instrument panel when ECU detects and reads the fault code.