Report the fault code after cleaning the throttle.

After the throttle valve of Volkswagen Tiguan is cleaned, whether the fault light is on or not depends on the amount of cleaning injected into the intake pipe. Generally speaking, carburetor cleaner is flammable. If it is too much, the driving computer will think that the mixture concentration is too high, and will automatically open the throttle to let more air in for dilution, thus increasing the idle speed. In general, the increase of mixture concentration can be solved by this method, but the carburetor cleaning agent is liquid and not easy to evaporate. Spray less and spray more, and the fault light will come on. Million car purchase subsidy