JB4 Code Help

yoon_209 · 08-21-2017, 02:09 PM

I have recently installed JB4 on my 13' 335i PWG and the car has been throwing some codes. I have searched through the forums and haven't been able to find anything. Car runs fine except for the initial start up idle can be slightly shaky at times. Current mods: bms intake, ER CP, VRSF catless DP, VRSF FMIC, jb4

108A10 Charge air temperature sensor, electrical signal implausible
108A01 MAP sensor, possible loose flexfuel wires
122108 BOV Plausibility - Tuner code, ignore
102001 Air mass, plausibility - Tuner code, ignore

Are these codes something that need to be urgently addressed? I'm primarily concerned with the first two codes.

Any help with be appreciated.

Bestodabest · 08-21-2017, 03:23 PM

Look up known problems related to running aftermarket intakes. Common problems include rough idle + CEL.

Usually resolved by unplugging the MAF sensor, or swapping intakes.

FSociety · 08-21-2017, 04:00 PM

Common issue, you'll get better support at n54tech.com

mike@x-ph.com · 08-21-2017, 06:45 PM

Try unplugging MAF sensor

08-21-2017, 02:09 PM	#1
yoon_209 Masterchief 368 Rep 1,023 Posts Drives: 20' BMW M340i Join Date: Aug 2016 Location: Irvine, CA iTrader: (1)	JB4 Code Help I have recently installed JB4 on my 13' 335i PWG and the car has been throwing some codes. I have searched through the forums and haven't been able to find anything. Car runs fine except for the initial start up idle can be slightly shaky at times. Current mods: bms intake, ER CP, VRSF catless DP, VRSF FMIC, jb4 108A10 Charge air temperature sensor, electrical signal implausible 108A01 MAP sensor, possible loose flexfuel wires 122108 BOV Plausibility - Tuner code, ignore 102001 Air mass, plausibility - Tuner code, ignore Are these codes something that need to be urgently addressed? I'm primarily concerned with the first two codes. Any help with be appreciated.
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08-21-2017, 03:23 PM	#2
Bestodabest Private First Class 37 Rep 122 Posts Drives: 2014 435i Xdrive Join Date: Apr 2017 Location: Toronto iTrader: (0)	Look up known problems related to running aftermarket intakes. Common problems include rough idle + CEL. Usually resolved by unplugging the MAF sensor, or swapping intakes.
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08-21-2017, 04:00 PM	#3
FSociety IG @bmwF9xG80 3813 Rep 7,593 Posts Drives: G80 M3, X4M, G07 X7m50 Join Date: Apr 2012 Location: NYC to NJ to Orlando FL iTrader: (3) Garage List 2023 BMW G80 M3 [0.00] 2020 BMW X4MC [0.00] 16' BMW X4 M40i [10.00] 06 Cadillac STS [0.00]	Common issue, you'll get better support at n54tech.com __________________ 60-130mph 6.5s X4M #HCP 60-130mph 5.0s G80 M3 #OrlandoAutowerks Sauce IG: @bmwF9XG80
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08-21-2017, 06:45 PM	#4
mike@x-ph.com BimmerPost Supporting Vendor 24307 Rep 191,021 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Try unplugging MAF sensor __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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