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Ask an Expert Forum How do I choose a suitable CO₂ sensor replacement like in this guide?
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How do I choose a suitable CO₂ sensor replacement like in this guide?

bidrohini
bidrohini 4 months ago

Hi everyone,

I found this blog post explaining how to find and replace a CO₂ sensor in a car. I'm trying to understand how to pick a compatible CO₂ sensor from options like those listed here on element14.
What key parameters should I match when selecting a replacement CO₂ sensor for automotive or similar use? Should I focus on voltage ranges, sensor response time, or compatibility with the ECU?
Are environmental CO₂ sensors appropriate for vehicle diagnostics, or should I only consider automotive-grade sensors?
How can I tell if a sensor supports real-time feedback needed for emission control systems?
Any recommendations on robust and reliable models for harsh automotive environments?

Thanks in Advance. 

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Top Replies

  • michaelkellett
    michaelkellett 4 months ago +1
    The first thing you need to do is work out if you want to replace an O2 sensor or a CO2 sensor - two completely different things. The O2 (oxygen) sensor typically is measuring the working of the catalytic…
  • bidrohini
    bidrohini 4 months ago in reply to michaelkellett +1
    Thanks for pointing that out — you're absolutely right, O₂ and CO₂ sensors serve different roles. To clarify my question: I'm exploring the idea of using CO₂ gas sensors (like those sold on Element14…
  • dougw
    dougw 4 months ago +1
    I have done a couple of CO2 sensor projects on element14. When I did my Invisible Hazards Project , I used a SenseAir S8 to measure CO2 (because it had a good price/performance ratio and I could program…
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  • acdc90
    0 acdc90 4 months ago

    Hello if this is for a car why not get the genuine part or one from the wreckers,?

    what model car, what age?

    Is the old one faulty?    or do need to confirm if it is working ?

    do you have a scan tool that shows all the parameters ? 

    if you dont have the correct sensor this will alter the fuel mapping  

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  • acdc90
    0 acdc90 4 months ago

    Hello if this is for a car why not get the genuine part or one from the wreckers,?

    what model car, what age?

    Is the old one faulty?    or do need to confirm if it is working ?

    do you have a scan tool that shows all the parameters ? 

    if you dont have the correct sensor this will alter the fuel mapping  

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
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