Toyota MAP sensor kpa incorrect in Generic OBDII

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  • aussie_mech
    Junior Member
    • Apr 2015
    • 3

    Toyota MAP sensor kpa incorrect in Generic OBDII

    Recently had a 2009 Toyota Hiace, 1KD diesel engine, whilst diagnosing with my Verus I realized the Toyota software didn't have a pid for MAP (or sometimes referred to as boost pressure sensor on Toyota diesels) so as I was chasing a boost problem I went into Generic OBD, found the MAP pid but noticed KOEO reading was 80kpa. My barometric pressure at the shop is 101kpa, which just to be 100% certain on daily conditions I checked on a Ford. And yes the Toyota barometric pressure pid was reading 101kpa.

    Thinking hey this might be my problem, I was lucky enough to have a 2008 Toyota Hilux in the carpark, and upon checking it, found the same 80kpa KOEO. This also results in the boost reading 20kpa low on full boost as the pid is out by 20 all the way through the range.

    Has anyone come across this, is this a problem, or am I missing something?
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