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BMW 3-Series (E90 E92) Forum
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Lost communication with ECM U0100
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07-07-2013, 12:22 PM | #1 |
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Lost communication with ECM U0100
I installed jb4 yesterday and had a misfire after a couple pulls. removed it and now i have gas coming out my exhaust and code reads U0100 Lost communication with ECM. what could it be?
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07-07-2013, 12:42 PM | #2 |
Captain
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Don't know that code. But I would go over the instructions for the tune. Pull it off, go back to stock. Start the car see if you get any codes. If not reinstall tune and make sure it's installed correctly.
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07-07-2013, 01:07 PM | #3 |
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07-07-2013, 01:17 PM | #4 |
Second Lieutenant
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Go through the installation instructions once again. Also check for any bent pins on DME connection.
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Cobb / DCI / VRSF Downpipes / VRSF 7" Intercooler / Walbro LPFP / E85
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07-07-2013, 02:00 PM | #5 |
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Probably water with carbon that smells like gas.
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JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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