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EFILive Tuning Software Discuss custom tuning & data logging the LB7, LLY, LBZ & LMM Duramax engines as well as the Allison transmission with EFILive software.

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Old 11-15-2018, 06:38 PM   #1 (permalink)
Wizo
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EFI live and constant P0101 Mass air flow code

Fellas, i have a real head scratcher here.
The particulars: 06 2500 HD crew cab, 6.6 LBZ
had the head gaskets replaced with the good ones.ARP head studs installed.
Heads reworked and milled.
Injectors replaced with overhauled ones from Duramax store.
Complete EGR removal (deleted).
EFI Live tune installed with 5 position on the fly power switch.
Air dog lift pump installed.
My truck runs fabulously and I'm extremely happy with it except for one small problem. With in one month of driving it after getting it back the check engine light comes on. P0101 Mass air flow sensor. I have checked the following;
every inch of the air intake ducting right up to the turbo intake. no air leaks. Checked it with starting fluid.Replaced the sensor itself. checked all associated wiring. When i start the engine, in about 45 to 60 seconds the check engine light comes on. P0101 Mass air flow sensor. I clear the code out and off i go to work. Every things runs great,until i start the truck up and go home and the same code reappears again.Anybody else have this problem? What is this gremlin? Please help me kill it. In January it has to be emissions tested and if the they see one OBDII code it automatically fails. thank for the help.

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2006 2500 HD crew cab, 6.6 LBZ
ARP head studs
EGR Delete
EFI Live tune installed with 5 position on the fly power switch
Air dog lift pump

Last edited by OkDually; 11-15-2018 at 06:46 PM. Reason: sig
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Old 11-15-2018, 08:14 PM   #2 (permalink)
TheBac
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Stock intake?


Could be your tuning has a bug in it. You should be asking your tuner about it.

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Old 11-15-2018, 08:17 PM   #3 (permalink)
Rvn4me
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Michigan Oil Burners Member

^^^
Who ever your tuner is when they addressed your EGR codes they changed the EGR parameters B15** and they forgot about your P0101 parameters.
So this is either you or your tuner to change B0201" table with no values loaded

Last edited by Rvn4me; 11-15-2018 at 08:35 PM.
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