The main function of the catalytic converter in your Volkswagen is to reduce the number of toxic gases and the pollutants that exit from it. When the catalytic converter of the car is failed, it will affect several functions and the efficiency of the car. So, for enjoying a comfortable drive you have to maintain the exhaust system including the catalytic converter. The following video defines the signs in which you have to diagnose the bad catalytic converter in Volkswagen Jetta.

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