How often should you replace your Nox Sensors

Discussion in 'Volvo Forum' started by Rob100100, Oct 19, 2019.

  1. Rob100100

    Rob100100 Light Load Member

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    The first set of nox sensors(factory)lasted for 4 years, then they went in a really bad spot in Montana a long way from a volvo dealership. It is coming up to 4 years since the replacement and the start of winter. So thinking of replacing them in November at the next oil change/pm. Was the first set just unlucky or is 4 years about the lifetime for them? Opinions or experience appreciated. Thanks in advance.
     
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  2. Carlinho

    Carlinho Bobtail Member

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    I got about 530k out of the front one by the turbo.
     
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  3. mhyn

    mhyn Road Train Member

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    when codes pop up...
     
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  4. TruckerPete1990

    TruckerPete1990 Road Train Member

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    Replace them when the code pops up.. No reason to replace them before as they aren't Cheap and won't shut you down...
     
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  5. nasriza

    nasriza Road Train Member

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    They will shut you down at 5mph i usually try to replace mine every 3 years or so just so i can avoid the derates.
     
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  6. TruckerPete1990

    TruckerPete1990 Road Train Member

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    5 MPH must be a Volvo thing then. I've had my inlet go out and never derated me. My outlet is bad right now and hasn't
     
  7. Rob100100

    Rob100100 Light Load Member

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    Thanks Nasriza for your info. That is what happened in Montana near Helena, Dealership in Great Falls was closed with Calgary being the closest one that was open. Cost me 3 days by the time all was done. I know you said 3 years but I will have them replaced at the next oil change. Costs money but so did sitting in Calgary. I prefer to replace items before the code comes up if possible.
     
  8. nasriza

    nasriza Road Train Member

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    usually its about 1300 for both to put in new onces by the time i paid for tow down time and volvo dealer charge i was in about 3600 so this way its a no brainer i do it a little more often but i never get a call from a driver telling me truck is derated.
     
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  9. Rob100100

    Rob100100 Light Load Member

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    I disconnected the speed sensor just to get me to Calgary. As you said expensive to replace the sensors but worth it to do before you get a code and a derate.Thanks again for the help
     
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