Toyota Corolla (E120): Oxygen sensor circuit slow response

Inspection procedure

Circuit description

Other materials:

Using the AUX port
To use the AUX port, connect a portable player, press the “AUDIO” button, then select “AUX” to display the audio control screen. Connecting a portable audio player ■Operating portable audio players connected to the multimedia system The volume can be adjusted using the vehicle' ...

For vehicles equipped with catalytic converter
Caution: if large amount of unburned fuel flows into the converter, it may cause overheating and a fire hazard. To prevent this, observe the following precautions. Use only unleaded gasoline.  avoid prolonged idling. Avoid running the engine at idle speed for more than 20 minutes. ...

Inspection procedure
Hint: read freeze frame data using the hand–held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, th ...