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Thread: CSP5 Air Density Select Value

  1. #1
    Senior Member KhakiCummins's Avatar
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    Default CSP5 Air Density Select Value

    On a CSP5 tune, does the Air Density Select Value automatically default to 5?

    I'm trying to diagnose a loss in fuel mileage and one thing that I noticed is the Air Density Select Value is at 5 which translates to ~27000 ft but I'm at sea level. I replace the Barometric Pressure Sensor and the value is still at 5.
    Duane

    2008 Ram 3500 QuadCab
    Hamilton 110# Springs & HD Pushrods, ARP 2000s, EFILive, SB 3250 DD

  2. #2
    Lifetime Member GMPX's Avatar
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    Default

    No it doesn't, Number 5 is protection mode, eg the ECM has sensed a problem and defaults to 5 for all running conditions (see parameter E2593).
    Check for DTC's, there might be a valid reason it is doing that.
    I no longer monitor the forum, please either post your question or create a support ticket.

  3. #3
    Senior Member KhakiCummins's Avatar
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    Default

    That's what I thought but I wasn't sure. I know that 5 is the default and I've checked for any set DTCs but there are none set. Now I'm looking at sensors that may not be reading properly but are not completely bad.
    Duane

    2008 Ram 3500 QuadCab
    Hamilton 110# Springs & HD Pushrods, ARP 2000s, EFILive, SB 3250 DD

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