Impreza WRX F4-2.0L DOHC Turbo (2004)
Oxygen Sensor: Service and Repair
Front Oxygen Sensor
Front Oxygen (A/F) Sensor
REMOVAL
1. Disconnect the battery ground cable.
2. Remove the solenoid valve cover.
3. Disconnect the connector from the front oxygen (A/F) sensor.
4. Disconnect the engine harness fixed by clip (A) from the bracket (B).
5. Remove the front right side wheel.
6. Lift-up the vehicle.
