P0172 Audi - tfsi 1.8

Question

yellow engine light is glowing and I just host the service with the car. anyone know if it's something as dangerous or something I do not need to care about

Answer 1

HI there,

This code means the fuel system is running to rich. This can be caused by a variety of things, but if the engine is performing normally it's usually the result of a faulty O2 sensor.
P0172 AUDI - System Too Rich Bank 1

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