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Thread: Having Trouble Getting PIDs To Play Ball

  1. #1
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    Mar 2009
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    Default Having Trouble Getting PIDs To Play Ball

    My mom has a 2015 Chevy Equinox with the 2.4L I4 Direct Injection and it threw a P0172 Exhaust System Too Rich and a P0014 Exhaust Camshaft Position Timing. When my sister brought it over it had no codes, not even historical. Strange as they stared at the MIL being lit up the entire drive from MI to CO. I proceeded to change the oil that was way past due and the car has been running just fine ever since. I'm trying not to overthink this as neglected oil changes are hell on these particular engines and cause all sorts of issues. I did see that a P0172 can be caused by the high pressure pump going nuts, so last night I went for a little cruise with an el cheapo handheld scanner and saw LTFTs in the mid-high -20% range. Enough that I decided to bust out EFILive to see what the deal is, but some of the PIDs are showing up with red Xs. I really want to see commanded vs observed fuel pressure. Usually I can right click, select more info, and see what I'm missing to get a PID working. Problem is, more info is greyed out on these PIDs and even on some of the supported PIDs. I've attached a PID screenshot, PID list, and a quick log (that I have yet to review) of me driving back from getting delicious beer with the car up to temp. Strange the ECT never goes over 176. I did try to click validate PIDs to no avail. I've never done this before, so the first time I did it was here in the kitchen and it red Xd all but 1! So I connected to the vehicle and it brought it back to the way it was in the screenshot. Hopefully this is just something little I'm missing as I think I could have some answers with just a short drive.

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    Mom PIDs.pid
    Mom Log 2.efi

    Just a quick edit to add that I was lacking E39.APCYL.DMA so the the cam phasing errors and the fuel pressure errors I was hoping to capture were not. That'll be on my next log. I hadn't yet pulled the tune from the ECM to see what it used, I plan to build the logging tables to match B1001 Desired Fuel Pressure, B7934-6 Intake Cam Position, and B7954-6 Exhaust Cam Position (both based on baro).
    Last edited by Supercharged111; 1 Week Ago at 03:36 PM.
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

  2. #2
    Joe (Moderator) joecar's Avatar
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    Default

    I'm looking thru your attached files, I don't know the answer yet.

  3. #3
    Lifetime Member
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    Default

    Your help is always appreciated. You and Statesman have both been a huge help to me.
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

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