https://stream.echo6.co/videos/watch/5b777ee4-9534-44f5-bc97-5a6423c3b3a4 I have a feeling this one won't be easy... This 2015 Mazda CX9 has a persistent Check Engine Light at 80k miles. Dealer already performed a SKETCHY "harness repair" which involved chopping off and re-routing the harness for the Bank 2 Air Fuel Ratio Sensor... Amazing haha xD Code set: P219B - Bank 2 Air-Fuel Ratio IMBALANCE. What does that mean?? Let's start from scratch, collect some data, and come up with a game plan on what exactly to test on this Mystery Mazda. How would YOU diagnose this car? THINKTOOL PROS: https://www.amazon.com/dp/B08XXWHQVJ?tag=onamzpineholl-20&linkCode=ssc&creativeASIN=B08XXWHQVJ&asc_item-id=amzn1.ideas.NHZL00NIDEPF Enjoy! Ivan Mon, 13 Apr 2026 20:41:05 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/5b777ee4-9534-44f5-bc97-5a6423c3b3a4 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.