Jb4 Check Engine Light

Kat707 · 04-10-2024, 08:43 PM

Has anyone installed a JB4 tuner and got this code? Error code 121002
Error description: Boost pressure sensor, electrical: short circuit to ground
I disconnected battery per instructions… I replaced both Map Sensors, but the code comes right back. 2019 X5 X40i

JohnRoth · 04-17-2024, 11:39 AM

Check the pins in the plug to see if you bent one possibly:

04-10-2024, 08:43 PM	#1
Kat707 Registered 0 Rep 4 Posts Drives: BMW F10 Join Date: Jun 2019 Location: San Diego iTrader: (0) Garage List 2019 BMW X5 XDrive40i [0.00]	Jb4 Check Engine Light Has anyone installed a JB4 tuner and got this code? Error code 121002 Error description: Boost pressure sensor, electrical: short circuit to ground I disconnected battery per instructions… I replaced both Map Sensors, but the code comes right back. 2019 X5 X40i
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04-17-2024, 11:39 AM	#2
JohnRoth Private 62 Rep 95 Posts Drives: 2020 G05 40i M-Sport 2023 330i Join Date: Mar 2019 Location: Los Angeles iTrader: (0) Garage List 2020 BMW G05 X5 [9.00] 2020 BMW X5 [0.00]	Check the pins in the plug to see if you bent one possibly: __________________ F10 M5 AlpineWhite/SakhirOrange[DCT]
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