P1440 on the 2006 Toyota 4Runner
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| T-SB-0230-12 Rev | 2018-04-02. Service bulletin. Some 2005 ? 2009 model year 4Runner, 2006 ? 2007 model year Land Cruiser, 2005 ? 2007 model year Sequoia, and 2005 ? 2006 model year Tundra vehicles equipped with the 2UZ-FE (4.7 L) engine may exhibit a MIL ?ON? condition for the following Diagnostic Trouble Codes (DTCs): ? P0412 ? Secondary Air Injection System Switching Valve ?A? Circuit ? P0418 ? Secondary Air Injection System Relay ?A? Circuit ? P1440/P1443 ? Secondary Air Injection System Control Valve Circuit Bank 1 / Bank 2 ? P1441/P1444 ? Secondary Air Injection System Switching Valve No. 2 Bank 1 / Bank 2 Stuck Open ? P2440 ? Secondary Air Injection System Switching Valve Stuck Open Bank 1 ? P1442/P1445 ? Secondary Air Injection System Switching Valve No. 2 Bank 1 / Bank 2 Stuck Close ? P2441 ? Secondary Air Injection System Switching Valve Stuck Close Bank 1 ? P2445 ? Secondary Air Injection System Pump Stuck Off Bank 1 This condition may be caused by debris passing through the air injection pump assembly and contaminating various components in the system. Use the following procedure to address this condition. |
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| T-SB-0230-12 | 2016-07-07. Service bulletin. Some 2005 - 2009 model year 4Runner, 2006 - 2007 model year Land Cruiser, 2005 - 2007 model year Sequoia, and 2005 - 2006 model year Tundra vehicles equipped with the 2UZ-FE (4.7 L) engine may exhibit a MIL "ON" condition for the following Diagnostic Trouble Codes (DTCs): • P0412 - Secondary Air Injection System Switching Valve "A" Circuit • P0418 - Secondary Air Injection System Relay "A" Circuit • P1440/P1443 - Secondary Air Injection System Control Valve Circuit Bank 1 I Bank 2 • P1441/P1444 - Secondary Air Injection System Switching Valve No. 2 Bank 1 I Bank 2 Stuck Open • P2440 - Secondary Air Injection System Switching Valve Stuck Open Bank 1 • P1442/P1445 - Secondary Air Injection System Switching Valve No. 2 Bank 1 I Bank 2 Stuck Close • P2441 - Secondary Air Injection System Switching Valve Stuck Close Bank 1 • P2445 - Secondary Air Injection System Pump Stuck Off Bank 1 This condition may be caused by debris passing through the air injection pump assembly and contaminating various components in the system. Use the following procedure to address this condition. |
2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.