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O2 Sensor testing on voltmeter help to confirm if my O2 sensor is working *Video*

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Bustedknuckle

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I pulled this from my 2003 BF200, I hooked up the white wire(heater) up to the pos and neg to a fully charged spare battery and it was hooked up throughout the whole test on the video below. Then I hooked up the gray and black wires to my volt meter.

Voltmeter setting on 20 = the voltage shown on the video.

resistance test on the heater wires with OHM setting at 20k = .001 reading

https://www.youtube.com/watch?v=_8I5N8plnMY

The o2 sensor would heat up to about 150 degree externally but no more, when I applied heat the voltage went up.

MY BIGGEST QUESTION: Is the O2 sensor heater suppose to heat the O2 sensor to 600 degrees?

My thought is the O2 sensor heater is not warming up to the operating temperature of 600 degrees as the voltage was within the range when the heat was applied. I know the signal wire works but thats powered by my heat source not the exhaust.
 
Your video did not load correctly for me.

However, I'm not sure your test is valid. Seems like the HO2 sensor must be at engine operating temperature for any test to be valid.

See: http://www.preludepower.com/forums/showthread.php?t=268999

This is the procedure for testing the HO2 sensor on a Honda Prelude. I think that the Honda outboard would be similar. The Helm shop manual for the 200/225 says the biases should be below 0.4 volts on the low side and above 0.6 volts on the high side.

As for testing resistance, the Helm Shop manual does not address that. However, for most Honda autos, the resistance should be 10 and 40 ohms.
See: http://my.prostreetonline.com/2016/02/12/how-to-test-a-honda-accord-o2-sensor/

Disclaimer: I've never personally tested an HO2 sensor.
 
My apology, I fixed the video here: https://www.youtube.com/watch?v=DOcLiBAxmKg

I pulled the 600degrees part from this: http://www.autotap.com/techlibrary/understanding_oxygen_sensors.asp

You are correct on the volts side of the signal wire. The video will show that now. Thankyou for the resistence reading, Im pretty sure my O2 sensor is bad but looking for more confirmation, can you see my video?


chawk_man said:
Your video did not load correctly for me.

However, I'm not sure your test is valid. Seems like the HO2 sensor must be at engine operating temperature for any test to be valid.

See: http://www.preludepower.com/forums/showthread.php?t=268999

This is the procedure for testing the HO2 sensor on a Honda Prelude. I think that the Honda outboard would be similar. The Helm shop manual for the 200/225 says the biases should be below 0.4 volts on the low side and above 0.6 volts on the high side.

As for testing resistance, the Helm Shop manual does not address that. However, for most Honda autos, the resistance should be 10 and 40 ohms.
See: http://my.prostreetonline.com/2016/02/12/how-to-test-a-honda-accord-o2-sensor/

Disclaimer: I've never personally tested an HO2 sensor.
Click to expand...
 
ok so I did the same test on a known good o2 sensor, the voltage jumps up and stabilizes at .5 or .6 volts. this confirms even more that the heater has failed to heat up to a normal operating voltage. But the resistence test was the same for both O2 sensor heaters.

Anyone know if I can use the Honda Odyssey O2 sensor (they look very similar) instead of the bf200 O2 sensor? Theres a $150 difference so wondering whats the difference?
 
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