18872/P2440/009280

18872/P2440/009280 - Secondary Air Injection System Switching Valve Bank 1 : Stuck Open

Possible Symptoms

• Malfunction Indicator Light (MIL) ON

Possible Causes

• SAI pressure hose between the pump and the combi valve cracked

Possible Solutions

• Run Output Tests to run the Secondary Air Injection pump while wiggling the corrugated hose to listen/feel for leaks.

Special Notes

• 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
    • https://static.nhtsa.gov/odi/tsbs/2019/MC-10162819-0001.pdf NHTSA