Impreza WRX Wagon F4-2.0L DOHC Turbo (2002)
Refer to the illustrations above for more details on locating the appropriate sensors.
The list shown above is of A/F Sensor related DTCs. (This list is for example only. Refer to the applicable service manual for a complete list of DTCs.)
Note:
When the DTCs for A/F sensor are stored in memory, do not replace the oxygen sensor.