TSB: Some 2012 - 2013 model year Sequoia and Tundra vehicles equipped with 3UR engines may exhibit a MIL "ON" condition with the following Diagnostic Trouble Codes (DTCs):
? P2440: Secondary Air Injection System Switching Valve Stuck Open Bank 1
? P2442: Secondary Air Injection System Switching Valve Stuck Open Bank 2
This condition may be caused by debris/ice in the air switching valve assembly. The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been changed to reduce the possibility of this condition occurring.
