The heater circuit should be 5 to 10 ohms. The sebsor circuit should be measured in volt when operating. 0.00 volt when exposed to oxygen and close to 1.0 volt when not. You should have a fast change i volt. Use a hot propan flame on the tip of the O2 sensor and heat it red hot. Then pull away the flame and the voltage should drop to 0.00v at once. Sometimes after testing it like this it will start to work again due to carbon being burned off and cleaned. Sent fra min SM-G935F via Tapatalk
I find it more interesting to find the problem than just replacing parts. Sent fra min SM-G935F via Tapatalk
Yes, doesn't change the fact that these sensors degrade over time. 20 years old and working is still not working anywhere as good as new sensors.
I agree. I had a O2 sensor issues recently myself, and after heating and measuring it I was able to get it working again. But anyway I ordered new ones the same day. Cheap on ebay to 348 and 355, and workig great! Sent fra min SM-G935F via Tapatalk
tested sensor ohms were at 26-29 heated to red hot after changing leads climbed to 360 volts dropped rather slowly to get this - 16 volt6 ??? ordered a new one 72 bucks wanted 2 of them damn last one will order another one in a week or so should change in pairs I am told THANKS AGAIN Tommy
According to two articles I have, O2 sensor output signal wires should NOT be tested with an ohm meter: Image Unavailable, Please Login Image Unavailable, Please Login
The heater circuit is measured with a ohm meter. The ohm meter itself outputs 9 volt. The Ecu outputs 12 volt on this circuit, so that circuit is safe to measure. To measure the sensor circuit you should only measure volt. Make sure to switch your volt meter to DC 2 volt. I think you have the wrong switching if you read 360 volt or 16 volt or 6 volt. You should read something like 0.01 to 0.99 volt. And as m.stojanovic quoted do not apply(9volt) voltage to the sensor circuit by measure it with ohm. Sent fra min SM-G935F via Tapatalk
