What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P2440Secondary Air Injection System Switching Valve Stuck Open, Bank 1P2440SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE STUCK OPEN, BANK 1Manufacturer communications
5Original wording in English
LEXUS
Reported code forms P2440
TSB: REVISION NOTICE February 16, 2016 Rev2: ? The Parts Information and Repair Procedure sections have been updated. Some 2010 ? 2013 model year GX 460 vehicles equipped with 1UR-FE engines may exhibit a MIL ?ON?…
LEXUS
Reported code forms P2440
TSB: Some 2014 ? 2016 model year GX 460 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…
LEXUS
Reported code forms P2440
TSB: SOME 2014 – 2016 MODEL YEAR GX 460 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…
LEXUS
Reported code forms P2440
TSB: Some 2010 ? 2013 model year GX 460 vehicles equipped with 1UR-FE engines may exhibit a MIL ?ON? condition with Diagnostic Trouble Code (DTC) P0418, P2440, P2442, and/or P2445 present. The Secondary Air Injection…
LEXUS
Reported code forms P2440
TSB: Some 2010 ? 2013 model year GX 460 vehicles equipped with 1UR-FE engines may exhibit a MIL ?ON? condition with Diagnostic Trouble Code (DTC) P0418, P2440, P2442, and/or P2445 present. The Secondary Air Injection…
Check vehicle applicability
7A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.