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P2440 Diagnostic Trouble Code Discussion for April 2023

Secondary Air Injection System Switching Valve Stuck Open


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Trouble Ticket Help Requests for DTC P2440
Help Request Posted
2016 Toyota Tundra Platinum 5.7L MIL Lamp on VIN: 5TFDY5F16G
P2440: Secondary Air Injection System Switching Valve Stuck Open Bank 1. This came in a week ago for the P2440 and a couple of other codes related to the switching valve. It took several trips for it to reset after clearing so I replaced the valve assembly located in the valley. And yes, I went cheap with Dorman. The two other ...
April 21, 2023