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== 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 __FORCETOC__ [[Category:Fault Codes]]

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