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How to test an oxygen sensor on a Honda (scope vs voltmeter)

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Uploaded on Jun 9, 2011

How to measure an O2 sensor signal with a scope and multimeter.

The car being tested in this video is a Honda but you can follow the procedures shown for any 4-wire heated oxygen sensor.

You do not need a scope to do these tests, you can follow along with your digital multimeter.

Testing procedures:
- signal circuit tests (amplitude and frequency)
- heater circuit tests
- signal circuit integrity testing
- scope testing an oxygen sensor
- digital voltmeter tests
Tools used:
- labscope
- digital multimeter
- backprobing tool
Related Videos:
- Ford O2 Sensor wiring quick tests (no bias voltage)
https://youtu.be/djyyKlIVeMI
- It's back! But is it the same problem? (1988 F-150)
https://youtu.be/-EihJ7hghXI
- Fixed Rich O2 (Is the sensor lying?)
https://youtu.be/ClCuoi3JxEI
- Chevy 4.8L Oxygen Sensor Test (fixed rich signal P0172, P0175)
https://youtu.be/H6lY42u19VM

For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium right here on YouTube. There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!

Playlist:
(Chapters 4 and 5) Fuel Trim and Oxygen Sensor Testing
- https://www.youtube.com/playlist?list...

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