1999 Subaru Forester Repair Question
Topics covered: Sensor, Engine, Firing order.
Mileage: No information provided.
Mileage: No information provided.
Asked on March 4, 2009
1999 Subaru Forester computer code for O2 sensors
Computer problem
1999 Subaru Forester 4 cyl All Wheel Drive Manual 110000 miles
Could you tell me which O2 sensor needs replacing if the code readout indicates "Sensor 1 Bank 2"?
The engine type is EJ253 - AWZVB. Thanks.
1999 Subaru Forester 4 cyl All Wheel Drive Manual 110000 miles
Could you tell me which O2 sensor needs replacing if the code readout indicates "Sensor 1 Bank 2"?
The engine type is EJ253 - AWZVB. Thanks.
Answer
Replied on March 4, 2009
Hello
Thanks for the donation
Sensor 1 refers to the oxygen sensor closest to the engine. Bank 2 refers to the side that the number 2 cylinder is on. Below is a firing order diagram so you know which side is Bank 2 of your engine..

You can always test the sensor before replacing it. To learn how to test an oxygen sensor, follow the link below..
http://www.2carpros.com/how_to/how_to_test_oxygen_sensor.htm
Thanks for using 2CarPros.com!
Replied on March 4, 2009
So, am I replacing the sensor before the cat conv. or after it?
Replied on March 4, 2009
Starting from the rear of the vehicle and moving towards the front, it will be after the converter. One closest to engine.