MPI <4G9> -
Troubleshooting
13A-106
Code No. P0136 Oxygen sensor (rear) system <sensor
2>
Probable cause
Range of Check
D
Three minutes have been passed since the engine has been started.
D
The engine coolant temperature is approx. 80
_
C or more.
D
Intake air temperature is 20 - 50
_
C
D
Engine speed is 1,200 r/min or more
D
Driving on a level surface at constant speed.
Set Conditions
D
The oxygen sensor (rear) output voltage is 4.5 V or more when the sensor
output voltage is 0.2 V or less and a voltage of 5 V is applied to the oxygen
sensor (rear) inside the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
D
Malfunction of oxygen sensor (rear)
D
Open or short circuit in the oxygen sensor (rear)
circuit or loose connector contact
D
Malfunction of engine-ECU <M/T>
D
Malfunction of engine-A/T-ECU <A/T>
Range of Check
D
Two seconds have passed after the engine-ECU <M/T> or engine-A/T-ECU
<A/T> detected an open circuit.
D
When the oxygen sensor (front) is in good condition.
Set Conditions
D
When the air/fuel ratio is rich, the oxygen sensor (front) output voltage is 0.5
V or more, the oxygen sensor (rear) output voltage is less than 0.1 V, and
the oxygen sensor (rear) output voltage fluctuates within 0.078 V.