Sub Oxygen Sensor

INSPECTION

HINT: Inspect only when code No. 27 is displayed.

- Cancel the diagnostic trouble code.
- Warm up the engine until it reaches normal operating temperature.
- Drive for 5 minutes or more at a speed less than 80 km/h (50 mph) in D position.
- From the condition in the above step, fully depress the accelerator pedal for at least 2 seconds or more.
- Stop the vehicle and turn the ignition switch OFF.
- Carry out the above steps again to test acceleration.
- If code No. 27 appears again. check the sub oxygen sensor circuit. If the circuit is normal, replace the sub oxygen sensor.