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O2 sensors

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
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Webpirate
Posts: 32
Joined: 18 January 2019
Year and Model: 2006 s40
Location: Winnipeg
Been thanked: 1 time

O2 sensors

Post by Webpirate »

Hello
I have a 2006 volvo s40 2.4i with no check engine lights. I was just adding graphs to my torque app screen when I noticed that my pre cat O2 sensor was stable and my post cat O2 sensor was fluctuating..

Is that normal for the volvos? Is the front sensor an Afr sensor instead of a regular O2 sensor??
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Webpirate
Posts: 32
Joined: 18 January 2019
Year and Model: 2006 s40
Location: Winnipeg
Been thanked: 1 time

Post by Webpirate »

Better readout different app
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Screenshot_20200513-105717.jpg
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