Toyota Tundra (2015 year). Manual — part 1141
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000WC20N1X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P014C-P014F,P015A-P015D; A/F Sensor Slow Response
- Rich to Lean Bank 1 Sensor 1; 2015 MY Tundra [08/2014 - ]
DTC
P014C
A/F Sensor Slow Response - Rich to Lean Bank 1 Sensor 1
DTC
P014D
A/F Sensor Slow Response - Lean to Rich Bank 1 Sensor 1
DTC
P014E
A/F Sensor Slow Response - Rich to Lean Bank 2 Sensor 1
DTC
P014F
A/F Sensor Slow Response - Lean to Rich Bank 2 Sensor 1
DTC
P015A
A/F Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1
DTC
P015B
A/F Sensor Delayed Response - Lean to Rich Bank 1 Sensor 1
DTC
P015C
A/F Sensor Delayed Response - Rich to Lean Bank 2 Sensor 1
DTC
P015D
A/F Sensor Delayed Response - Lean to Rich Bank 2 Sensor 1
DESCRIPTION
HINT:
Refer to DTC P2195
.
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P014C
The "Rich to Lean response rate deterioration level*"
value is less than the standard.
(2 trip detection logic)
Air fuel ratio sensor (for bank 1
sensor 1)
Air fuel ratio sensor (for bank 1
sensor 1) heater
ECM
P014D
The "Lean to Rich response rate deterioration level*"
value is more than the standard.
(2 trip detection logic)
P014E
The "Rich to Lean response rate deterioration level*"
value is less than the standard.
(2 trip detection logic)
Air fuel ratio sensor (for bank 2
sensor 1)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P014C-P014F...
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
Air fuel ratio sensor (for bank 2
sensor 1) heater
ECM
P014F
The "Lean to Rich response rate deterioration level*"
value is more than the standard.
(2 trip detection logic)
P015A
The "Rich to Lean delay level*" value is less than the
standard.
(2 trip detection logic)
Air fuel ratio sensor (for bank 1
sensor 1)
Air fuel ratio sensor (for bank 1
sensor 1) heater
ECM
P015B
The "Lean to Rich delay level*" value is more than the
standard.
(2 trip detection logic)
P015C
The "Rich to Lean delay level*" value is less than the
standard.
(2 trip detection logic)
Air fuel ratio sensor (for bank 2
sensor 1)
Air fuel ratio sensor (for bank 2
sensor 1) heater
ECM
P015D
The "Lean to Rich delay level*" value is more than the
standard.
(2 trip detection logic)
*: Calculated by the ECM based on the air fuel ratio sensor output
MONITOR DESCRIPTION
After the engine is warm, the ECM carries out air-fuel ratio feedback control, and maintains the air-fuel ratio at
the stoichiometric level. In addition, after all the preconditions have been met, active air-fuel ratio control is
stoichiometric air-fuel ratio learned during normal air-fuel control. The ECM determines whether there is an air
If the time it takes the air fuel ratio sensor output to change is delayed, DTC P015A, P015B, P015C and P015D
are stored.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P014C-P014F...
MONITOR STRATEGY
Related DTCs
P014C: Air fuel ratio sensor (bank 1) slow response (rich to lean)
P014D: Air fuel ratio sensor (bank 1) slow response (lean to rich)
P014E: Air fuel ratio sensor (bank 2) slow response (rich to lean)
P014F: Air fuel ratio sensor (bank 2) slow response (lean to rich)
P015A: Air fuel ratio sensor (bank 1) delayed response (rich to lean)
P015B: Air fuel ratio sensor (bank 1) delayed response (lean to rich)
P015C: Air fuel ratio sensor (bank 2) delayed response (rich to lean)
P015D: Air fuel ratio sensor (bank 2) delayed response (lean to rich)
Required Sensors/Components (Main)
Air fuel ratio sensor
Required Sensors/Components (Related) Vehicle speed sensor, crankshaft position sensor
Duration
10 to 15 seconds
MIL Operation
2 driving cycles
TYPICAL ENABLING CONDITIONS
Monitor runs whenever following DTCs not stored
None
Active air fuel ratio control
Performing
Active air fuel ratio control is performed when the following conditions met
-
Battery voltage
11 V or higher
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P014C-P014F...
Engine coolant temperature
75°C (167°F) or higher
Idle
OFF
Engine speed
1000 to 2500 rpm
Air fuel ratio sensor status
Activated
Fuel-cut
OFF
Engine load
10 to 70%
Shift position
2nd or higher
Catalyst monitor
Not executed
Mass air flow
4.0 to 12 gm/sec.
TYPICAL MALFUNCTION THRESHOLDS
Air Fuel Ratio Sensor Slow Response (Rich to Lean)
Rich to Lean response rate deterioration level
0.03 V or less
Air Fuel Ratio Sensor Slow Response (Lean to Rich)
Lean to Rich response rate deterioration level
-0.035 V or higher
Air Fuel Ratio Sensor Delayed Response (Rich to Lean)
Rich to Lean delay level
376.832 ms or more
Air Fuel Ratio Sensor Delayed Response (Lean to Rich)
Lean to Rich delay level
376.832 ms or more
MONITOR RESULT
Refer to Checking Monitor Status
.
CONFIRMATION DRIVING PATTERN
HINT:
Performing this confirmation driving pattern will activate the air fuel ratio sensor response monitor.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P014C-P014F...
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