How to Replace Upstream O2 Sensor 2007-2015 Mazda CX-9

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This video shows you how to install an upstream oxygen (O2) sensor on your 2007-2015 Mazda CX-9. The Oxygen (O2) sensors help monitor the emissions system in your vehicle. They measure the amount of oxygen passing through the exhaust, which informs the computer about proper fuel/air mixture, and the condition of the catalytic converter. Over time, the sensors may fail due to contamination, or reaching the end of their service life. TRQ offers new O2 sensors made to manufacturer’s specifications.
This process should be similar on the following vehicles:
2007 Mazda CX-9
2008 Mazda CX-9
2009 Mazda CX-9
2010 Mazda CX-9
2011 Mazda CX-9
2012 Mazda CX-9
2013 Mazda CX-9
2014 Mazda CX-9
2015 Mazda CX-9
Tools you will need:
• Pocket Screwdriver
• 10mm Socket 1aau.to/oaVh/1A...
• O2 Sensor Socket
• Trim Tool Set 1aau.to/o23/1AX...
• Bent Nose Pliers
• Needle nose pliers 1aau.to/ozY/1AX...
• Needle nose pliers 1aau.to/ozY/1AX...
• 1/2 Inch Impact Gun 1aau.to/opt/1AX...
• 3/8 Inch Impact Gun
• 5/16 Inch Socket
• Ratchet 1aau.to/obpb/1A...
• Socket Extensions 1aau.to/obdG/1A...
• Swivel
• Brake Parts Cleaner
• Cloth Rags 1aau.to/oyV/1AX...
• Paper Towels 1aau.to/oyV/1AX...
• Pick 1aau.to/oIh/1AX...
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⚠ DISCLAIMER:
While TRQ strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. TRQ is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.