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  • Should I be worried?

    Greetings guys and gals. I came across this failure when playing with the OBD toggle. Does anyone know if this needs to be checked by the dealer? It's a 2017 model with 1,000kms on the clock.

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  • #2
    so54i88 I'd get it to your dealer, No idea what that module is that being said I do recall there being an issue with the airflow sensor which would could be consistent with the KPA reading it reads air pressures. dandin any ideas bud?

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    • #3
      Thanks thehunteroz! I took the car to the dealer who will do a full diagnostic when I go in to have the steering shaft boot replaced in a few days. I will report back.

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      • thehunteroz
        thehunteroz commented
        Editing a comment
        No problem mate.

    • #4
      You have a OBDLink reader? I have used the OBDLink app and mine gives the same error for all my cars. I wouldn't worry about it, I believe it's some emissions crap for North American cars (ie Smog testing)

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      • #5
        I have the same error too but no fault codes through obd. I don't think techstream reported any errors either. car still runs normal.

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        • #6
          Does this app give readouts for fuel system and injector compensation readouts?

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          • #7
            Got a full scan at the dealership. No fault codes. Still not sure what $B9 failure is but as other suggested this doesn't seem to show up on Toyota's system.

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            • #8
              Originally posted by davidd View Post
              Does this app give readouts for fuel system and injector compensation readouts?
              I'm not sure sorry. Maybe google OBDlink app?

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              • #9
                The airmass sensor has two readings
                One is just air temp which gives a voltage output the other is the airmass which is a frequency signal (Fortuna has this) that ranges from about 2k up to about 8k + hertz under full load. Airmass (MAF) used in Fortuna isn't a measure of Kpa that is found in a MAP sensor. Although a MAP and MAF sensor can either have an output signal for engine load in variable voltage or frequency. Its just derived from a different means one being airflow the other air pressure.
                hope this helps for general knowledge guys.
                cheers, Spook.

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