From Ross-Tech Wiki
18872/P2440/009280 - Secondary Air Injection System Switching Valve Bank 1 : Stuck Open
- Malfunction Indicator Light (MIL) ON
- SAI pressure hose between the pump and the combi valve cracked
- Run Output Tests to run the Secondary Air Injection pump while wiggling the corrugated hose to listen/feel for leaks.
- For the Tiguan with the 2.0T DGUE engine that has one or more of the following fault codes, please see TSB 054615 for possible ECM update and hardware update.
- P0172, P0300, P0301, P0302,P0303, P0304, P0441, P0456, P060C, P2440 and/or P2450