Toyota Tundra. Manual — part 1151



TP sensor (built
into throttle
body)



ECM

P2138

Throttle/Pedal Position
Sensor/Switch "D"/"E"
Voltage Correlation



Short between
VPA and VPA2
circuits



APP sensor



ECM

Comes on

DTC Stored

P2195

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



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



A/F sensor(bank
1 sensor 1)



A/F sensor (bank
1 sensor 1) heater



A/F sensor heater



Integration relay



Air induction
system circuits



Fuel pressure



Fuel injector



ECM

Comes on

DTC Stored

P2196

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



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



A/F sensor (bank
1 sensor 1)



A/F sensor (bank
1 sensor 1) heater



A/F sensor heater
circuits



Air induction
system



Integration relay



Fuel pressure



Fuel injector



ECM

Comes on

DTC Stored

P2197

Oxygen (A/F) Sensor

Comes on

DTC Stored

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

Signal Stuck Lean
(Bank 2 Sensor 1)



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



A/F sensor (bank
2 sensor 1)



A/F sensor (bank
2 sensor 1) heater



A/F sensor heater



Integration relay



Air induction
system circuits



Fuel pressure



Fuel injector



ECM

P2198

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



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



A/F sensor (bank
2 sensor 1)



A/F sensor (bank
2 sensor 1) heater



A/F sensor heater
circuits



Air induction
system



Integration relay



Fuel pressure



Fuel injector



ECM

Comes on

DTC Stored

P2237

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



Open in A/F
sensor (bank 1
sensor 1) circuit



A/F sensor (bank
1 sensor 1)



ECM

Comes on

DTC Stored

P2238

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



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

Comes on

DTC Stored

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra



A/F sensor(bank
1 sensor 1)



ECM

P2239

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



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



A/F sensor (bank
1 sensor 1)



ECM

Comes on

DTC Stored

P2240

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



Open in A/F
sensor (bank 2
sensor 1) circuit



A/F sensor (bank
2 sensor 1)



ECM

Comes on

DTC Stored

P2241

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



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



A/F sensor(bank
2 sensor 1)



ECM

Comes on

DTC Stored

P2242

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



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



A/F sensor(bank
2 sensor 1)



ECM

Comes on

DTC Stored

P2252

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



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



A/F sensor (bank
1 sensor 1)



ECM

Comes on

DTC Stored

P2253

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



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



A/F sensor(bank

Comes on

DTC Stored

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

1 sensor 1)



ECM

P2255

Oxygen (A/F) Sensor
Reference Ground
Circuit Low (Bank 2
Sensor 1)



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



A/F sensor (bank
2 sensor 1)



ECM

Comes on

DTC Stored

P2256

Oxygen (A/F) Sensor
Reference Ground
Circuit High (Bank 2
Sensor 1)



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



A/F sensor (bank
2 sensor 1)



ECM

Comes on

DTC Stored

P2401

Evaporative Emission
Leak Detection Pump
Stuck OFF



Canister pump
module
(Reference
orifice, leak
detection pump,
vent valve)



Connector/wire
harness (Canister
pump module -
ECM)



EVAP system
hose (pipe from
air inlet port to
canister pump
module, canister
filter, fuel tank
vent hose)



ECM

Comes on

DTC Stored

P2402

Evaporative Emission
Leak Detection Pump
Stuck ON



Canister pump
module
(Reference
orifice, leak
detection pump,
vent valve)



Connector/wire
harness (Canister
pump module -
ECM)

Comes on

DTC Stored

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra