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  • Volvo O2 specs

     Mike updated 3 months, 2 weeks ago 2 Members · 5 Posts
  • Anonymous

    Deleted User
    July 5, 2021 at 5:28 am

    Hi there, looking for some specs on a 4 wire Volvo v70 naturally aspirated 2.4lt petrol. First, it seems that they come with a 4 and a 5 wire sensor (but latter may be for turbo models?) Can anyone confirm.

    Second, wondering if 4 wire is a wideband; scantool gives mV measurement but could be a conversion.

    Third, wondering if there is a heat ohm spec and a signal wire and signal return V spec (if it’s a wideband).

    thanks Mike. Been watching your vids on and off for a while and they are always the highest quality information and techniques.

  • Mike

    July 6, 2021 at 8:47 am

    Hey Alex, thanks! I appreciate the kind words πŸ™‚

    This Volvo, what year are we looking at here?

  • Anonymous

    Deleted User
    July 9, 2021 at 7:52 pm

    Whoops sorry Mike,
    we’re talking 09/2000, MY2001, B52446 engine, 2.4lt, normally aspirated, ATX

  • Anonymous

    Deleted User
    July 9, 2021 at 7:54 pm

    Sorry that’s B5244S engine, not “6” πŸ˜‰

    • Mike

      July 12, 2021 at 9:16 am


      That’s correct, the turbo runs a 5 wire and the NA motor runs a 4 wire. Both of them are widebands.

      You are seeing the conversion on the scanner. The computer will monitor that sensor in milliamps.

      Heater resistance looks to be about 2.5 ohms. Unfortunately, I’m striking out on signal and signal return voltage values πŸ™

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