https://stream.echo6.co/videos/watch/c42aee05-8444-4253-be3d-108ab31ac9dd In this first part of a two-part series, I get my hands dirty on a 2000 Lexus RX-300 with a wideband O2 sensor problem. As I show in the video, the operation of this sensor is very different to a ‘normal’ O2 sensor, and requires some different testing methods. Check out Part II for the conclusion. Engine Performance Diagnostics chapter 5 Symptoms pending trouble codes (P0171, P1130), intermittent rough idle, Fix replaced the bank one upstream wideband O2 sensor, cleaned the MAF sensor, Tests shown using scan data to evaluate wideband O2 performance, how to test for a wideband O2 sensor problem or an actual lean condition, using the Snap-On Troubleshooter during diagnostics, understanding Toyota wideband O2 voltage operating ranges and circuit design, scope testing a wideband O2 sensor, understanding Toyota processed wideband O2 sensor data compared to voltage readings, Tools used scan tool, lab scope, propane, Playlist (Chapters 4 and 5) Fuel Trim and Oxygen Sensor Testing https://www.youtube.com/playlist?list=PLD2809EEC7BAAF989, Related videos Wideband O2 sensor testing, P1130 (Lexus RX-300) - Part II https://youtu.be/s7zv9uzs0b4, How to identify a bad oxygen sensor (signal fixed rich) https://youtu.be/ClCuoi3JxEI, O2 sensor testing (fixed lean) P0174, P0154, P0155 - Mitsubishi https://youtu.be/2VW78LKAQYY, Understanding Short Term and Long Term Fuel Trim (an SD Premium video) https://youtu.be/oRX2V6_a3dc, 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 https://www.scannerdanner.com/join-scannerdanner-premium.html 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! Disclaimer: Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC. Fri, 01 May 2026 08:31:55 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/c42aee05-8444-4253-be3d-108ab31ac9dd All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.