Volvo Drive-E Front O2 failure

Adam Technician Maplewood, Minnesota Posted   Latest   Edited  
Tech Tip
Driveability
2015 Volvo XC60 T5 2.0L (40 B4204T11) 6-spd (TF-80SC AWD)
P0171-00

This has been getting to be a very common failure of the Front O2 sensor causing lean codes on these 2.0 T5 and T6 engines (Turbocharged and Super/Turbocharged). The key to getting it to act up is by free-revving the engine for a minute or two and then letting it come back down to idle. When idling again the fuel trims will rise up to 30-50% showing dead lean but the rear o2(s) will spike up to .95-1.0V showing dead rich. 

Attached is a screen capture showing the issue. 

Hope this helps someone out there! 

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Dean Owner
Albany, New York
Dean Default
 

Thanks for taking the time to post this. Good lookin out!

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Stuart Mobile Technician
Blue Island, Illinois
Stuart Default
 

Thanks for posting

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Randy Diagnostician
Glendora, California
Randy Default
 

This always is a great way to check front o2 . This is the way I do it

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