SPONSORED LINKS

1999 Subaru Forester computer code for O2 sensors

Tiny
DYBS
  • MEMBER
  • 1999 SUBARU FORESTER
  • 4 CYL
  • AWD
  • MANUAL
  • 110,000 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.
Wednesday, March 4th, 2009 AT 4:09 PM

3 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
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..


https://www.2carpros.com/forum/automotive_pictures/261618_Noname_282.jpg



You can always test the sensor before replacing it. To learn how to test an oxygen sensor, follow the link below..

https://www.2carpros.com/how_to/how_to_test_oxygen_sensor.htm

Thanks for using 2CarPros.com!
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, March 4th, 2009 AT 4:25 PM
Tiny
DYBS
  • MEMBER
  • 2 POSTS
So, am I replacing the sensor before the cat conv. Or after it?
Was this
answer
helpful?
Yes
No
Wednesday, March 4th, 2009 AT 5:31 PM
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Starting from the rear of the vehicle and moving towards the front, it will be after the converter. One closest to engine.
Was this
answer
helpful?
Yes
No
Wednesday, March 4th, 2009 AT 9:11 PM

Please login or register to post a reply.

Related Oxygen Sensor Replace/Remove Content

Oxygen Sensor Replacement
VIDEO
Oxygen Sensor Replacement
Instructional repair video
Oxygen Sensor Replacement
GUIDE
Oxygen Sensor Replacement
An oxygen or lambda sensor is used to determine the engine exhaust mixture which can then be controlled by the computer. These sensors are equipped with a heater that can...
VIEW MORE

Sponsored links