I have a 2006 Jetta MK5 2.5 Value Edition, I keep getting the following Trouble Code:

P0411 "Secondary Air Injection System: Incorrect Flow Detected"

Any idea what it could be??

I googled and found this on ross tech

Possible Causes

Fuel Pump Relay (J17) faulty
Hoses/Pipes to/between Components faulty/clogged
Secondary Air Injection Pump (V101) faulty
Secondary Air Injection Pump Relay (J299) faulty
Secondary Air Injection Solenoid Valve (N112) faulty

Possible Solutions

Check Fuel Pump Relay (J17)
Check Hoses/Pipes to/between Components
Check Secondary Air Injection Hoses/Pipes for Carbonization
Check Secondary Air Injection Pump (V101)
Check Secondary Air Injection Pump Relay (J299)
Check Secondary Air Injection Solenoid Valve (N112)

Fuel Pump relay was checked and seems OK, any idea where the other stuff is and how it can be checked?

Thanks!