Toyota 2GR-FE Manual page 231

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
DTC No. Detection Item
P0136 Oxygen Sensor
Circuit Malfunction
(Bank 1 Sensor 2)
P0137 Oxygen Sensor
Circuit Low Voltage
(Bank 1 Sensor 2)
P0138 Oxygen Sensor
Circuit High Voltage
(Bank 1 Sensor 2)
P0141 Oxygen Sensor
Heater Circuit
Malfunction (Bank 1
Sensor 2)
P0156 Oxygen Sensor
Circuit Malfunction
(Bank 2 Sensor 2)
P0157 Oxygen Sensor
Circuit Low Voltage
(Bank 2 Sensor 2)
Suspected Trouble
Area
1. Open or short in Comes on
HO2 sensor (bank 1
sensor 2) circuit
2. HO2 sensor (bank
1 sensor 2)
3. HO2 sensor heater
(bank 1 sensor 2)
4. A/F sensor (bank 1
sensor 1)
5. Engine room
junction block (EFI
relay)
6. Gas leakage from
exhaust system
1. Open in HO2 Comes on
sensor (bank 1
sensor 2) circuit
2. HO2 sensor (bank
1 sensor 2)
3. HO2 sensor heater
(bank 1 sensor 2)
4. Engine room
junction block (EFI
relay)
5. Gas leakage from
exhaust system
1. Short in HO2 Comes on
sensor (bank 1
sensor 2) circuit
2. HO2 sensor (bank
1 sensor 2)
3. ECM internal
circuit malfunction
1. HO2 sensor Comes on
2. ECM
1. Open or short in Comes on
HO2 sensor (bank 2
sensor 2) circuit
2. HO2 sensor (bank
2 sensor 2)
3. HO2 sensor heater
(bank 2 sensor 2)
4. A/F sensor (bank 2
sensor 1)
5. Engine room
junction block (EFI
relay)
6. Gas leakage from
exhaust system
1. Open in HO2 Comes on
sensor (bank 2
sensor 2) circuit
2. HO2 sensor (bank
2 sensor 2)
3. HO2 sensor heater
(bank 2 sensor 2)
4. Engine room
junction block (EFI
relay)
5. Gas leakage from
exhaust system
MIL Memory
DTC stored
DTC stored
DTC stored
DTC stored
DTC stored
DTC stored
ES–75
See page
ES-171
ES-171
ES
ES-171
ES-115
ES-171
ES-171