2003 my03 outback O2 sensor- 3 or 4 wires?

nvmylh · Post by **nvmylh** » Mon Mar 03, 2014 9:58 am

Hi all,
Looking at replacing the O2 sensor in the outback but have notice that it only has 3 wires whereas the bosch recommended universal sensor has 4..

Has anyone here used the universal sensor and just not had to use 1 wire?
I believe the bosch part number is 0258986507 or 0258007084
Thanks

nvmylh · Post by **nvmylh** » Thu Mar 06, 2014 9:25 am

Found an old comment from Gannon saying that you can use the 4 wire sensor and just wire the earth to the exhaust or body. Heater and signals wires stay the same..

Point · Post by **Point** » Thu Mar 06, 2014 4:49 pm

I just replaced the front one on mine and it was a 4 wire. I got a Denso the same as the original for what I thought was a reasonable price. Mine was a 22641 AA140, it is written on the sensor, so check yours to be sure. They are listed on ebay for about $200.

BTW, my car is a 7/2002 MY03 XS Lux

Gannon · Post by **Gannon** » Thu Mar 06, 2014 6:18 pm

Yup just throw a crimp on ring lug on the ground/earth wire and put it under a bolt into the body or engine

nvmylh · Post by **nvmylh** » Thu Mar 06, 2014 10:14 pm

Thanks Gannon, ps how did you ever go with that exhaust you were making?? We emailed a couple of times.. I thinking of doing another, maybe a 4 into 1 this time

Gannon · Post by **Gannon** » Fri Mar 07, 2014 5:03 am

Havent got any further with it. 2 mortgages, 2 kids and full time work doesnt leave much time for playing