Toyota Tundra (2015 year). Manual — part 1647
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
While fuel-cut operation performed (during vehicle
deceleration), A/F sensor current less than 0.7 mA for 3
seconds (2 trip detection logic)
A/F sensor
ECM
HINT:
Sensor voltage detection monitor
Under air-fuel ratio feedback control, If the air fuel ratio sensor output voltage is below 2.8 V (very rich
condition) for 5 seconds despite the rear heated oxygen sensor output voltage being below 0.59 V, the ECM
stores DTC P2196 or P2198. Alternatively, if the air fuel ratio sensor output voltage is higher than 3.8 V (very
lean condition) for 5 seconds despite the rear heated oxygen sensor output voltage being 0.21 V or higher,
DTC P2195 or P2197 is stored.
Sensor current detection monitor
A rich air-fuel mixture causes a low air fuel ratio sensor current, and a lean air-fuel mixture causes a high air
fuel ratio sensor current. Therefore, the sensor output becomes low during acceleration, and it becomes high
during deceleration with the throttle valve fully closed. The ECM monitors the air fuel ratio sensor current
during fuel-cut and detects any abnormal current values.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2195-P219...
MONITOR STRATEGY
Related DTCs
P2195: A/F sensor signal stuck lean (Bank 1)
P2196: A/F sensor signal stuck rich (Bank 1)
P2197: A/F sensor signal stuck lean (Bank 2)
P2198: A/F sensor signal stuck rich (Bank 2)
Required Sensors/Components (Main)
A/F sensor
Required Sensors/Components (Related)
HO2 sensor
Duration
5 seconds: Sensor voltage detection monitor
3 seconds: Sensor current detection monitor
MIL Operation
2 driving cycles
TYPICAL ENABLING CONDITIONS
All
Monitor runs whenever following DTCs
not present
P0016, P0018 (VVT System - Misalignment)
P0017, P0019 (Exhaust VVT System - Misalignment)
P0031, P0032, P0051, P0052, P101D, P103D (Air fuel ratio sensor
heater)
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
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2195-P219...
control)
P0128 (Thermostat)
P0171, P0172, P0174, P0175 (Fuel system)
P0301 - P0308 (Misfire)
P0335 (Crankshaft position sensor)
P1340 (Camshaft position sensor)
P0412, P0415, P0418, P0419, P1613, P1614 (Secondary air
injection system control)
P0451, P0452, P0453 (EVAP system)
P2440 - P2447 (Secondary air injection system)
P0500, P0722 (Vehicle Speed Sensor)
P0505 (IAC valve)
Sensor voltage detection monitor:
Time after engine start
30 seconds or more
Air fuel ratio sensor status
Activated
Fuel system status
Closed-loop
Sensor current detection monitor:
Battery voltage
11 V or more
Atmospheric pressure
76 kPa (570 mmHg) or more
A/F sensor status
Activated
ECT
75°C (167°F) or more
TYPICAL MALFUNCTION THRESHOLDS
Sensor voltage detection monitor (Lean side malfunction P2195 and P2197):
Rear HO2S voltage
0.21 V or higher
A/F sensor voltage
More than 3.8 V
Sensor voltage detection monitor (Rich side malfunction P2196 and P2198):
Rear HO2S voltage
Less than 0.59 V
A/F sensor voltage
Less than 2.8 V
Sensor current detection monitor (High side malfunction P2195 and P2197):
A/F sensor current
2.2 mA or more
Sensor current detection monitor (Rich side malfunction P2196 and P2198):
A/F sensor current
Less than 0.7 mA
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2195-P219...
CONFIRMATION DRIVING PATTERN
This confirmation driving pattern is used in the "PERFORM CONFIRMATION DRIVING PATTERN" procedure of
the following diagnostic troubleshooting procedure.
Connect the Techstream to the DLC3.
1.
Turn the ignition switch to ON.
2.
Turn the Techstream on.
3.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
4.
Turn the ignition switch off and wait for at least 30 seconds.
5.
Turn the ignition switch to ON and turn the Techstream on.
6.
Start the engine, and warm it up until the ECT reaches 75°C (167°F) or higher [A].
7.
On Techstream, select the following menu items to check the fuel-cut status: Powertrain / Engine
and ECT / Data List / Idle Fuel Cut.
8.
Drive the vehicle at between 60 km/h (38 mph) and 120 km/h (75 mph) for at least 10 minutes
[B].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
9.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2195-P219...
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