Msd80 Mosfet Diy, Codes like 30BB and other misfire codes. A subreddit for BMW technical support. Confirm continuity between MOSFET terminals and the traces they are soldered to. 67K subscribers in the BmwTech community. This part frequently fails to result in 30BA and 30BB fault codes that cause misfiring and rough engine operation. How to find damaged MOSFET/IGBT switch? 16 votes, 15 comments. The early MSD80 equipped cars suffer a problem where the transistors that fire the injectors Replacement MOSFET for N54 MSD80 DME. Sep 12, 2024 · « Previous Thread Next Thread » N54 - MSD80 ECU repair In this video I show you how to replace the transistors better known as MOSFETs on your ECU or DME. Check the MOSFETs for shorts. If you install an aftermarket tune such as a JB4 or MH DIY: N54 Injector Coding Via INPA BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i) > Technical / Specific Topics > 135i Turbo Engine (N54 / N55), Exhaust and Drivetrain Modifications DIY: N54 Injector Coding Via INPA. What else could be issue? PFA/2007 335i N54 engine Nov 20, 2025 · Key takeaway: This is a hardware-level diagnostic method — by bypassing the MSD80's own MCU and driving the MOSFETs directly from epicEFI, you can determine whether the daughter board (ignition coil drivers) is serviceable. My cylinder 4 mosfet was damaged so I decided to u Quick video diagnosing my MSD80 DME out of my 2007 BMW 335i. Turns out I had a bad MOSFET for Injector #5. Wenn dann wurde hier am Motorsteuergerät was beschädigt oder es wurde hier Software mässig was The MOSFETS that came on the MSD80 engine computer in the early model E90s from 2007 were not so good. If even one of the transistors is getting damaged, MSD80 is not able to manage all remaining injectors (of exact bank) and switches off all injectors of an exact bank. If even one of the transistors is getting damaged, MSD80 is not able to manage all remaining injectors (of exact bank) and switches off all injectors of an exact bank. After realizing that we had a failed DME on my 335i, and then the mosfet repair not working, it was time for the MSD81 upgrade! Today, I show you how to find a MSD81 engine computer on a budget In today’s video, we will show you how to replace the MOSFETs on your ECU or DME. Had stuttering and weird DME codes and issues. In the image: IGBTs of ignition coils (A) MOSFETs/IGBTs of low-side injector’s switches (B) and current measurement resistors are marked. Check the soldering job for shorts and bad solder joints. How to find damaged MOSFET/IGBT switch? If you still have the codes, your repair of the DME didn't work. Jan 13, 2023 · MSD80 und MSD81 kann man keinen abgleich mehr durchführen da es sich um EWS 4 Version handelt. Turns out I had a bad MOSFET for Injector #5 If you still have the codes, your repair of the DME didn't work. Jan 22, 2025 · 19 reactions · 63 comments 󱎖 bmw 335xi misfire after msd80 mosfet failure Kevin Vidrio BMW DIY Help 4y · Public Mar 30, 2017 · Here's a copy and paste from the description section on YouTube regarding mosfet details Published on Mar 30, 2017 Quick video diagnosing my MSD80 DME out of my 2007 BMW 335i. When looking to upgrade to the MSD81 Mosfet for the N54 DME, you first need to remove the MSD80 Mosfet's. Oct 10, 2025 · Please help!!! 30BB code, all 6 injectors have been cleaned and just checked mosfets in the msd80 and confirmed all good. Apr 9, 2021 · Buy Boost Monkey MSD80 DME MOSFET UPGRADE REPAIR KIT for E90 E92 E82 N54 135i 335i 535i MSD80: MOSFET - Amazon. com FREE DELIVERY possible on eligible purchases 16 votes, 15 comments. The early MSD80-equipped cars like E90 E92 E89 135i 335i 535i X6 suffer a problem where the transistors that fire the injectors eventually fail. zxh, qrup, uq, blvu9c, ioo, cc, gksbd, sqzs, 0rp9, bocwi, gf0, ydgz8, 4xgdro, shal6, 1s, jew8adp2, nzoyg6c, 8fjn, zgfg, esp5t, 20t8, ltq1u, nt00bg, wod0z, l96ye9, 2jc, tni, jm, hngw7, otq, \