The oil circuit of Volkswagen LaVida gas refueling door becomes narrower.

The engine is out of order. Exhaust emission is not up to standard, such as poor fuel, failure of three-way catalytic converter, excessive carbon deposition in intake pipe, blocked fuel nozzle, failure of oxygen sensor, and occasional engine flameout. , will cause the engine fault light to light up, and poor oil quality will most often cause the engine fault light to light up, so you can replace the three-way catalyst.