Toyota Tundra (2015 year). Manual — part 1270
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P219A
The difference in air fuel ratios between the cylinders exceeds
the threshold (2 trip detection logic).
Fuel injector assembly
Intake system
Gas leak from exhaust
system
Ignition system
Compression pressure
Air fuel ratio sensor (bank
1 sensor 1)
ECM
P219B
The difference in air fuel ratios between the cylinders exceeds
the threshold (2 trip detection logic).
Fuel injector assembly
Intake system
Gas leak from exhaust
system
Ignition system
Compression pressure
Air fuel ratio sensor (bank
2 sensor 1)
ECM
P219C
The difference in air fuel ratios between the cylinders exceeds
the threshold (2 trip detection logic).
Fuel injector assembly
Intake system
Gas leak from exhaust
system
Ignition system
Compression pressure
Air fuel ratio sensor (bank
1 sensor 1)
ECM
P219D
The difference in air fuel ratios between the cylinders exceeds
the threshold (2 trip detection logic).
Fuel injector assembly
Intake system
Gas leak from exhaust
system
Ignition system
Compression pressure
Air fuel ratio sensor (bank
2 sensor 1)
ECM
P219E
The difference in air fuel ratios between the cylinders exceeds
the threshold (2 trip detection logic).
Fuel injector assembly
Intake system
Gas leak from exhaust
system
Ignition system
Compression pressure
Air fuel ratio sensor (bank
1 sensor 1)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P219A-P219F...
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
ECM
P219F
The difference in air fuel ratios between the cylinders exceeds
the threshold (2 trip detection logic).
Fuel injector assembly
Intake system
Gas leak from exhaust
system
Ignition system
Compression pressure
Air fuel ratio sensor (bank
2 sensor 1)
ECM
P21A0
The difference in air fuel ratios between the cylinders exceeds
the threshold (2 trip detection logic).
Fuel injector assembly
Intake system
Gas leak from exhaust
system
Ignition system
Compression pressure
Air fuel ratio sensor (bank
1 sensor 1)
ECM
P21A1
The difference in air fuel ratios between the cylinders exceeds
the threshold (2 trip detection logic).
Fuel injector assembly
Intake system
Gas leak from exhaust
system
Ignition system
Compression pressure
Air fuel ratio sensor (bank
2 sensor 1)
ECM
P21A2
The difference in air fuel ratios between the cylinders exceeds
the threshold (2 trip detection logic).
Fuel injector assembly
Intake system
Gas leak from exhaust
system
Ignition system
Compression pressure
Air fuel ratio sensor (bank
1 sensor 1)
ECM
P21A3
The difference in air fuel ratios between the cylinders exceeds
the threshold (2 trip detection logic).
Fuel injector assembly
Intake system
Gas leak from exhaust
system
Ignition system
Compression pressure
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P219A-P219F...
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
Air fuel ratio sensor (bank
2 sensor 1)
ECM
MONITOR DESCRIPTION
Fuel System Air-fuel Ratio Cylinder Imbalance Monitor
The ECM uses the air fuel ratio sensor and crankshaft position sensor to monitor the difference in air-fuel ratios
between the cylinders caused by differences in injection volumes between the cylinders, leakage in the intake or
exhaust system, etc.
Air Fuel Ratio Sensor Monitoring Method: P219A and/or P219B are
stored primarily when a rich side imbalance is detected.
When the system detects a difference in air-fuel ratios between the cylinders due to fluctuation in the air fuel
ratio sensor output over 1 engine cycle (2 crankshaft revolutions), the system determines that there is a
problem.
Crankshaft Position Sensor Monitoring Method: P219C, P219D,
P219E, P219F, P21A0, P21A1, P21A2 and/or P21A3 are stored
primarily when a lean side imbalance is detected.
The system monitors the engine speed variation and when the variation becomes large, the system determines
that there is a difference in air-fuel ratios between the cylinders, which it determines to be a problem.
MONITOR STRATEGY
Related DTCs
P219A: Air fuel ratio cylinder imbalance monitor (Bank 1)
P219B: Air fuel ratio cylinder imbalance monitor (Bank 2)
P219C: Air fuel ratio cylinder imbalance monitor (Cylinder 1)
P219D: Air fuel ratio cylinder imbalance monitor (Cylinder 2)
P219E: Air fuel ratio cylinder imbalance monitor (Cylinder 3)
P219F: Air fuel ratio cylinder imbalance monitor (Cylinder 4)
P21A0: Air fuel ratio cylinder imbalance monitor (Cylinder 5)
P21A1: Air fuel ratio cylinder imbalance monitor (Cylinder 6)
P21A2: Air fuel ratio cylinder imbalance monitor (Cylinder 7)
P21A3: Air fuel ratio cylinder imbalance monitor (Cylinder 8)
Required Sensors/Components
(Main)
Air fuel ratio sensor
Crankshaft position sensor
Required Sensors/Components
(Related)
Mass air flow meter assembly
Engine coolant temperature sensor
Vehicle speed sensor
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P219A-P219F...
Duration
10 seconds: Air fuel ratio sensor open circuit between AF+ and AF- and
low impedance
30 seconds: Crankshaft position sensor monitoring method
MIL Operation
2 driving cycles
TYPICAL ENABLING CONDITIONS
P219A, P219B: Air Fuel Ratio Sensor Monitoring Method
Monitor runs whenever following DTCs
not stored
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)
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)
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)
P0412, P0415, P0418, P0419, P1613, P1614 (Secondary Air Injection
System Control)
P0500 (Vehicle speed sensor)
P2440, P2441, P2442, P2443, P2444, P2445, P2446, P2447 (Secondary
Air Injection System)
Air fuel ratio sensor status
Activated
Engine speed
1400 to 2200 rpm
Engine coolant temperature
75°C (167°F) or higher
Atmospheric pressure
76 kPa (570 mmHg) or higher
Fuel system status
Closed loop
P219C, P219D, P219E, P219F, P21A0, P21A1, P21A2, P21A3: Crankshaft Position Sensor Monitoring
Method
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P219A-P219F...
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