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Service bulletins for the 2014 Toyota Tundra

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

366 on file from NHTSA, as of 2026-10-19.

About P2440 on the 2014 Toyota Tundra: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: P2440 are shown. Show all

Bulletins, newest first
T-SB-0079-162018-04-23. Service bulletin. TIRES:VALVE. TSB: Some 2014 ? 2016 model year Tundra (1UR-FE) vehicles may exhibit a MIL ?ON? condition with Diagnostic Trouble Code (DTC) P2440 (Secondary Air Injection System Switching Valve Stuck Open, Bank 1), or P2442 (Secondary Air Injection System Switching Valve Stuck Open, Bank 2), and under some conditions may enter limp mode (limited throttle input ~ 25mph). This condition can be triggered by sub-freezing ambient temperatures. Follow the Repair Procedure below to address this condition.
T-SB-0144-142017-08-01. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. TSB: Some 2014 - 2015 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.
T-SB-0079-162017-01-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ELECTRICAL SYSTEM. TSB: SOME 2014 – 2016 MODEL YEAR TUNDRA (1UR-FE) VEHICLES MAY EXHIBIT A MIL “ON” CONDITION WITH DIAGNOSTIC TROUBLE CODE (DTC) P2440 (SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE STUCK OPEN, BANK 1), OR P2442 (SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE STUCK OPEN, BANK 2), AND UNDER SOME CONDITIONS MAY ENTER LIMP MODE (LIMITED THROTTLE INPUT ~ 25MPH). THIS CONDITION CAN BE TRIGGERED BY SUB-FREEZING AMBIENT TEMPERATURES. FOLLOW THE REPAIR PROCEDURE BELOW TO ADDRESS THIS CONDITION.
T-SB-0079-162016-12-19. Service bulletin. EQUIPMENT. TSB: SOME 2014 – 2016 MODEL YEAR TUNDRA (1UR-FE) VEHICLES MAY EXHIBIT A MIL “ON” CONDITION WITH DIAGNOSTIC TROUBLE CODE (DTC) P2440 (SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE STUCK OPEN, BANK 1), OR P2442 (SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE STUCK OPEN, BANK 2), AND UNDER SOME CONDITIONS MAY ENTER LIMP MODE (LIMITED THROTTLE INPUT ~ 25MPH). THIS CONDITION CAN BE TRIGGERED BY SUB-FREEZING AMBIENT TEMPERATURES. FOLLOW THE REPAIR PROCEDURE BELOW TO ADDRESS THIS CONDITION.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.