1995 850 Turbo 02 sensor clean instead of replace?

2012 · Post by **2012** » 05 Feb 2015, 14:53

I am getting a check engine light of front oxygen sensor, and am wondering will I help by removing the sensor and cleaning it off? Thanks for the advice.

Post by **mecheng** » 05 Feb 2015, 16:52

Tried it, doesn't work. You can learn from my time wasted. It's not dirt that causes the issue

2012 · Post by **2012** » 15 Mar 2015, 10:26

Just replaced the O2 sensor with a new Bosch, 55 on eBay, light gone.

Post by **misha** » 15 Mar 2015, 11:12

If you have proper resistance on heater wires,then you can remove o2 and soak it in petrol overnight or you can clean it in ultrasonic bath,like injectors.

Cleaning is possible and successfull only if heater circuit is working.