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Principle and function >
< Removing and installing exhaust gas recirculation valve N18 with exhaust gas recirculation potentiometer G212
A3 Mk1
Power unit
4-Cylinder engine (2-valve), Mechanics
Exhaust system
Secondary air system
Secondary air system
Secondary air system
The secondary air system is designed to enable the catalytic converter to heat up and reach its operating temperature more quickly after a cold start.
Power unit
4-Cylinder engine (2-valve), Mechanics
Exhaust system
Secondary air system
Principle and function >
< Removing and installing exhaust gas recirculation valve N18 with exhaust gas recirculation potentiometer G212