Typical Malfunction Thresholds

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.

P2440, P2442 (AIR VALVE IS STUCK OPEN) [CASE 1]

Either condition is met	(a) or (b)
(a) AIR OFF Condition 1	Met
(b) AIR OFF Condition 2	Met

P2440, P2442 (AIR VALVE IS STUCK OPEN) [CASE 2]

Cumulative pressure pulsation

100 kPa (750 mmHg) or higher

P2441, P2443 (AIR VALVE IS STUCK CLOSED)

Either condition is met	(a) or (b)
(a) AIR ON Condition 3	Met
(b) AIR ON Condition 4	Met

SECONDARY AIR INJECTION ON (CONDITION 1)

Following conditions are met during AIR ON	-
Cumulative pressure pulsation	10 kPa or higher
AIR pressure	2.4 kPa or higher

SECONDARY AIR INJECTION ON (CONDITION 2)

Following conditions are met during AIR ON	-
Cumulative pressure pulsation	10 kPa or higher
AIR pressure	Below 2.4 kPa

SECONDARY AIR INJECTION ON (CONDITION 3)

Following conditions are met during AIR ON	-
Cumulative pressure pulsation	Below 10 kPa
AIR pressure	2.4 kPa or higher

SECONDARY AIR INJECTION ON (CONDITION 4)

Following conditions are met during AIR ON	-
Cumulative pressure pulsation	Below 10 kPa
AIR pressure	Below 2.4 kPa

SECONDARY AIR INJECTION OFF (CONDITION 1)

Following conditions are met during AIR OFF	-
Cumulative pressure pulsation	30 kPa or higher
AIR pressure	2.4 kPa or higher

SECONDARY AIR INJECTION OFF (CONDITION 2)

Following conditions are met during AIR OFF	-
Cumulative pressure pulsation	30 kPa or higher
AIR pressure	Below 2.4 kPa

SECONDARY AIR INJECTION OFF (CONDITION 3)

Following conditions are met during AIR OFF	-
Cumulative pressure pulsation	Below 30 kPa
AIR pressure	2.4 kPa or higher

SECONDARY AIR INJECTION OFF (CONDITION 4)

Following conditions are met during AIR OFF	-
Cumulative pressure pulsation	Below 30 kPa
AIR pressure	Below 2.4 kPa