Mitsubishi FUEL Manual page 24

13A-24
Code No. P0136 Oxygen sensor (rear) system <sensor
2>
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 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>.
MPI <4G6> -
Troubleshooting
Probable cause
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>