Toyota 1 MZ–FE Manual page 476

EG2–476
DTC P0130 P0150 Heated Oxygen Sensor Circuit Malfunction
(Bank 1 Sensor 1 Bank 2 Sensor 1)
CIRCUIT DESCRIPTION
Refer to "Insufficient coolant temp. for closed loop fuel control" on page EG2–473.
Diagnostic Trouble Code Detecting Condition
DTC No.
Voltage output of heated oxygen sensor remains
P0130 at 0,4 V or more, or 0,55 V or less, during idling
after the engine is warmed up.
P0150
(2trip detection logic)
H I NT: Bank 1 refers to the bank that includes cylinder No.1.
Bank 2 refers to the bank that does not include cylinder No,1.
Sensor 1 refers to the sensor closer to the engine body.
The heated oxygen sensor's output voltage and the short–term
fuel trim value can be read using the OBDll scan tool or TOYOTA
hand–held tester.
1MZ–FE ENGINE – CIRCUIT INSPECTION
Heated oxygen sensor
Fuel trim malfunction
Trouble Area