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P2440 Diagnostic Trouble Code Discussion for July 2012

Secondary Air Injection System Switching Valve Stuck Open


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Trouble Ticket Help Requests for DTC P2440
Help Request Posted
2008 Toyota Tundra SR5 4.7L Poor Idle Quality, MIL Lamp on VIN: 5TBBT54128
P2440: secondary air injection switch valve bank 1. Needs some advice on this one. Truck ran like low power and all the other lights come on- i understand the stability stuff comes on when an engine fault is present. What i need is a way to diagnose this- no help from the MODIS-no bi directional. What should i ...
July 13, 2012
2008 Toyota Tundra SR5 4.7L Poor Idle Quality, MIL Lamp on VIN: 5TBBT54128
P2440: secondary air injection switch valve bank 1. Needs some advice on this one. Truck ran like low power and all the other lights come on- i understand the stability stuff comes on when an engine fault is present. What i need is a way to diagnose this- no help from the MODIS-no bi directional. What should i ...
July 13, 2012