P0491 Audi -

Question

Secondary Air pump is running and new!
Code P0491 and P0492 is coming up again.

Air-Hoses are OK!

Answer 1

P0491 Secondary air Pump

P0492 Secondary air injection system Bank 2

The corrective action for p0491 is to check the fuse for the secondary air pump. The corrective action for P0492 is to check the air hose for the secondary air pump and the pump relay.If the hose are good especially in Bank 2 which is hard to inpsect due to it being a braided cloth ,replace the secodary air pump relay. There is also a TSB for this which can be helpful in this situation. TSB # 260804