DTC P2440: Secondary Air Injection System Switching Valve Stuck Open Bank1; DTC P2441: Secondary Air Injection System Switching Valve Stuck Close Bank1; DTC P2442: Secondary Air Injection System Switching Valve Stuck Open Bank 2; DTC P2443: Secondary Air Injection System Switching Valve Stuck Closed Bank 2 [08/2015 - 10/2016]: Description
WARNING: This page is about a different car, the 2018 Toyota Sequoia, 2017 Toyota Sequoia, and 2016 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
Refer to DTC P0412 (Refer to DESCRIPTION ).
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2440 | Cumulative pressure pulsation is 60 kPa (450 mmHg) or more for 2 seconds (1 trip detection logic). |
|
| The air switching valve (for bank 1) is stuck open for 7 seconds while the engine is running (2 trip detection logic). | ||
| P2441 | The air switching valve (for bank 1) is stuck close for 7 seconds while the engine is running (2 trip detection logic). |
|
| P2442 | Cumulative pressure pulsation is 60 kPa (450 mmHg) or more for 2 seconds (1 trip detection logic). |
|
| The air switching valve (for bank 2) is stuck open for 7 seconds while the engine is running (2 trip detection logic). | ||
| P2443 | The air switching valve (for bank 2) is stuck close for 7 seconds while the engine is running (2 trip detection logic). |
|
HINT:
Air switching valve normal operation:
When the Air Switching Valve Assembly (ASV) is open, exhaust gas pulsation occurs in the secondary air passage.
When the ASV is closed, exhaust gas pulsation does not occur in the secondary air passage.