Toyota Tundra (2015 year). Manual — part 1279
Related DTCs
P2440: Air control valve stuck open
P2441: Air control valve stuck closed
P2442: Air control valve stuck open
P2443: Air control valve stuck closed
Required Sensors/Components (Main)
Pressure sensor
Required Sensors/Components (Related)
-
Once per drive cycle: Others
Duration
2 seconds: P2440 Case 2, P2442 Case 2
7 seconds: Others
MIL Operation
1 driving cycle: P2440, P2442
2 driving cycles: Others
TYPICAL ENABLING CONDITIONS
All
Monitor runs whenever
following DTCs not
present
P0010, P0020 (VVT oil control valve)
P0011, P0021 (VVT system - Advance)
P0012, P0022 (VVT system - Retard)
P0013, P0023 (Exhaust VVT oil control valve)
P0014, P0024 (Exhaust VVT system - Advance)
P0015, P0025 (Exhaust VVT system - Retard)
P0016, P0018 (VVT system - Misalignment)
P0017, P0019 (Exhaust VVT system - Misalignment)
P0031, P0032, P0051, P0052, P101D, P103D (Air fuel ratio sensor heater)
P006A, P0107, P0108 (Manifold absolute pressure)
P0101, P0102, P0103 (Mass air flow meter)
P0112, P0113 (Intake air temperature sensor)
P0115, P0117, P0118 (Engine coolant temperature sensor)
P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135 (Throttle position
sensor)
P0125 (Insufficient Coolant Temperature for Closed Loop Fuel Control)
P014C, P014D, P014E, P014F, P015A, P015B, P015C, P015D, P2195, P2196, P2197,
P2198, P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255, P2256
(Air fuel ratio sensor)
P0171, P0172, P0174, P0175 (Fuel system)
P0301 - P0308 (Misfire)
P0327, P0328, P032C, P032D, P0332, P0333, P033C, P033D (Knock Sensor)
P0335 (Crankshaft position sensor)
P0340, P0342, P0343, P0345, P0347, P0348 (VVT sensor)
P0340, P1340 (Camshaft position sensor)
P0351 - P0358 (Igniter)
P0365, P0367, P0368, P0390, P0392, P0393 (Exhaust VVT sensor)
P0401 (EGR system)
P0451, P0452, P0453 (Evaporative Emission System Pressure Sensor)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
P0500 (Vehicle speed sensor)
P106B (Evap. emission control system Pressure Sensor - Air Injection System
Pressure Sensor correlation)
P219A, P219B, P219C, P219D, P219E, P219F, P21A0, P21A1, P21A2, P21A3 (Air-fuel
ratio imbalance)
P2431, P2432, P2433, P2435, P2436, P2437, P2438 (Secondary Air Injection
System Pressure Sensor)
P2440 (Case 1), P2441, P2442 (Case 1), P2443
Battery voltage
11 V or more
Atmospheric pressure
45 kPa (338 mmHg) or more
Engine
Running
AIR monitor during AIR: ON*1
Completed
AIR monitor during AIR: OFF*2
Completed
*1: AIR monitor during AIR: ON
-
Time after AIR in operation
5 seconds or more
AIR pump
ON
AIR valve
Open
Engine speed
400 to 3750 rpm
Intake air amount
Less than 100 gm/s
Time after engine start
1 second or more
*2: AIR monitor during AIR: OFF
-
Time after AIR in operation
10 seconds or more
AIR pump
OFF
AIR valve
Close
Engine speed
Below 3000 rpm
AIR monitor during AIR: ON
Completed
Time after engine start
1 second or more
P2440, P2442 AIR valve is stuck open (Case 2)
(a) Cumulative intake air amount
100 gm/s or more
(b) Difference between starting temperature and current temperature
10°C (18°F) or higher
(c) Starting coolant temperature
60°C (140°F) or higher
AIR pump
OFF
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
AIR valve
Close
Engine speed
3750 rpm or less
Time after engine started
1 second or more
Time after AIR in operation
10 seconds or more
AIR valve open stuck
Not detected
AIR pressure sensor open stuck (DTC P2445, P2447)
Not in operation
Engine load
20% or more
TYPICAL MALFUNCTION THRESHOLDS
Secondary Air Injection ON (Condition 1)
Both conditions are met during AIR ON
-
Cumulative pressure pulsation
18 kPa or higher
AIR pressure
1.9 kPa or higher
Secondary Air Injection ON (Condition 2)
Both conditions are met during AIR ON
-
Cumulative pressure pulsation
18 kPa or higher
AIR pressure
Below 1.9 kPa
Secondary Air Injection ON (Condition 3)
Both conditions are met during AIR ON
-
Cumulative pressure pulsation
Below 18 kPa
AIR pressure
1.9 kPa or higher
Secondary Air Injection ON (Condition 4)
Both conditions are met during AIR ON
-
Cumulative pressure pulsation
Below 18 kPa
AIR pressure
Below 1.9 kPa
Secondary Air Injection OFF (Condition 1)
Both conditions are met during AIR OFF
-
Cumulative pressure pulsation
25 kPa or higher
AIR pressure
3 kPa or higher
Secondary Air Injection OFF (Condition 2)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
Both conditions are met during AIR OFF
-
Cumulative pressure pulsation
25 kPa or higher
AIR pressure
Below 3 kPa
Secondary Air Injection OFF (Condition 3)
Both conditions are met during AIR OFF
-
Cumulative pressure pulsation
Below 25 kPa
AIR pressure
3 kPa or higher
Secondary Air Injection OFF (Condition 4)
Both conditions are met during AIR OFF
-
Cumulative pressure pulsation
Below 25 kPa
AIR pressure
Below 3 kPa
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
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
P2440, P2442 AIR valve is stuck open (Case 2)
Cumulative pressure pulsation
75 kPa or higher
MONITOR RESULT
Refer to Checking Monitor Status
.
CONFIRMATION DRIVING PATTERN
NOTICE:
prohibition (WAIT or ERROR).
If ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
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