Toyota Tundra. Manual — part 1326

Sensor Signal Stuck
Lean (Bank 1
Sensor 1)

A/F sensor (for
sensor 1) circuit



A/F sensor (for
sensor 1)



A/F sensor
heater (for
sensor 1)



Integration relay



A/F sensor
heater and
integration relay
circuits



Air induction
system



Fuel pressure



Injector



ECM

P2196

Oxygen (A/F)
Sensor Signal Stuck
Rich (Bank 1 Sensor
1)



Open or short in
A/F sensor (for
sensor 1) circuit



A/F sensor (for
sensor 1)



A/F sensor
heater (for
sensor 1)



Integration relay



A/F sensor
heater and
integration relay
circuits



Air induction
system



Fuel pressure



Injector



ECM

Comes on

DTC stored

-

P2197

Oxygen (A/F)
Sensor Signal Stuck
Lean (Bank 2
Sensor 1)



Open or short in
A/F sensor (for
sensor 1) circuit



A/F sensor (for
sensor 1)



A/F sensor
heater (for

Comes on

DTC stored

-

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

sensor 1)



Integration relay



A/F sensor
heater and
integration relay
circuits



Air induction
system



Fuel pressure



Injector



ECM

P2198

Oxygen (A/F)
Sensor Signal Stuck
Rich (Bank 2 Sensor
1)



Open or short in
A/F sensor (for
sensor 1) circuit



A/F sensor (for
sensor 1)



A/F sensor
heater (for
sensor 1)



Integration relay



A/F sensor
heater and
integration relay
circuits



Air induction
system



Fuel pressure



Injector



ECM

Comes on

DTC stored

-

P2237

Oxygen (A/F)
Sensor Pumping
Current
Circuit/Open (Bank
1 Sensor 1)



Open in Air
Fuel Ratio (A/F)
sensor (for bank
1,2 sensor 1)
circuit



Air Fuel Ratio
(A/F) sensor
(for bank 1,2
sensor 1)



ECM

Comes on

DTC stored

Applies

P2238

Oxygen (A/F)
Sensor Pumping
Current Circuit Low



Open or short in
A/F sensor (for
bank 1,2 sensor

Comes on

DTC stored

Applies

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

(Bank 1 Sensor 1)

1) circuit



A/F sensor (for
bank 1,2 sensor
1)



A/F sensor
heater (for bank
1, 2 sensor 1)



A/F relay



A/F sensor
heater and relay
circuits



ECM

P2239

Oxygen (A/F)
Sensor Pumping
Current Circuit High
(Bank 1 Sensor 1)



Open or short in
A/F sensor (for
bank 1, 2 sensor
1) circuit



A/F sensor (for
bank 1, 2 sensor
D



A/F sensor
heater (for bank
1, 2 sensor 1)



A/F relay



A/F sensor
heater and relay
circuits



ECM

Comes on

DTC stored

Applies

P2240

Oxygen (A/F)
Sensor Pumping
Current
Circuit/Open (Bank
2 Sensor 1)



Open in Air
Fuel Ratio (A/F)
sensor (for bank
1, 2 sensor 1)
circuit



Air Fuel Ratio
(A/F) sensor
(for bank 1, 2
sensor 1)



ECM

Comes on

DTC stored

Applies

P2241

Oxygen (A/F)
Sensor Pumping
Current Circuit Low
(Bank 2 Sensor 1)



Open or short in
A/F sensor (for
bank 1, 2 sensor
1) circuit



A/F sensor (for
bank 1, 2 sensor

Comes on

DTC stored

Applies

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

1)



A/F sensor
heater (for bank
1, 2 sensor 1)



A/F relay



A/F sensor
heater and relay
circuits



ECM

P2242

Oxygen (A/F)
Sensor Pumping
Current Circuit High
(Bank 2 Sensor 1)



Open or short in
A/F sensor (for
bank 1, 2 sensor
1) circuit



A/F sensor (for
bank 1, 2 sensor
1)



A/F sensor
heater (for bank
1, 2 sensor 1)



A/F relay



A/F sensor
heater and relay
circuits



ECM

Comes on

DTC stored

Applies

P2252

Oxygen (A/F)
Sensor Reference
Ground Circuit Low
(Bank 1 Sensor 1)



Open or short in
A/F sensor (for
bank 1,2 sensor
1) circuit



A/F sensor (for
bank 1, 2 sensor
1)



A/F sensor
heater (for bank
1, 2 sensor 1)



A/F relay



A/F sensor
heater and relay
circuits



ECM

Comes on

DTC stored

Applies

P2253

Oxygen (A/F)
Sensor Reference
Ground Circuit High
(Bank 1 Sensor 1)



Open or short in
A/F sensor (for
bank 1,2 sensor
1) circuit

Comes on

DTC stored

Applies

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra