Fault codes n20 328i

oczko98 · 02-08-2022, 04:51 PM

Hey,
Struggled to find anyone who has had this issue via google so thought I would ask here.
Codes;
- 420665
- 8044B0

What it could be? Everything works fine (paddle shifters, speed limiter, volume buttons, etc..).
Tried to clear the fault codes and they appeared again after a few minutes.

I have new agm (oem battery).
What can I do next?

sqwinny · 02-08-2022, 05:59 PM

8044B0 Shift paddles: Short circuit to B+
420665 Shift paddle: (shift paddle operation, 0x207) signal invalid 134249 yes Information

sqwinny · 02-08-2022, 06:10 PM

8044B0 Shift paddles: Short circuit to B+ 134249 yes

420665 Shift paddle: (shift paddle operation, 0x207) signal invalid 134249 yes Information

I don't really know but I'm good with internet searches. Good luck !

drhome · 03-16-2024, 12:23 PM

Hey, I had the same problem and same error codes - which were a real mystery for me as shifters worked well. I've found out that it might be related to a clockspring wires or even FEM which are quite expensive in comparison to just puddles. Luckily after paddle shifters replacement codes are gone. I've cleared errors and tested it for a while everything works perfectly fine.
P.s. Airbag removal is a pain in the a**

so if you've never did that and you want to try to change PSs prepare for a real battle.
Good luck guys!

02-08-2022, 04:51 PM	#1
oczko98 Private 16 Rep 81 Posts Drives: F30 328i 2012 Join Date: Dec 2021 Location: Poland iTrader: (0) Garage List 2012 F30 328i [10.00]	Fault codes n20 328i Hey, Struggled to find anyone who has had this issue via google so thought I would ask here. Codes; - 420665 - 8044B0 What it could be? Everything works fine (paddle shifters, speed limiter, volume buttons, etc..). Tried to clear the fault codes and they appeared again after a few minutes. I have new agm (oem battery). What can I do next?
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02-08-2022, 05:59 PM	#2
sqwinny Major 479 Rep 1,065 Posts Drives: 2013 6MT 328i M Sport Join Date: Mar 2019 Location: Miami iTrader: (3)	8044B0 Shift paddles: Short circuit to B+ 420665 Shift paddle: (shift paddle operation, 0x207) signal invalid 134249 yes Information __________________ MY13: TTE400 Stage 2 turbo. e80 tune by Navardi Tuned. 380 whp/360 wheel torque stock block Build Thread: https://f30.bimmerpost.com/forums/sh....php?t=1742413 IG + YT: Sqwin_n20
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02-08-2022, 06:10 PM	#3
sqwinny Major 479 Rep 1,065 Posts Drives: 2013 6MT 328i M Sport Join Date: Mar 2019 Location: Miami iTrader: (3)	8044B0 Shift paddles: Short circuit to B+ 134249 yes 420665 Shift paddle: (shift paddle operation, 0x207) signal invalid 134249 yes Information I don't really know but I'm good with internet searches. Good luck ! __________________ MY13: TTE400 Stage 2 turbo. e80 tune by Navardi Tuned. 380 whp/360 wheel torque stock block Build Thread: https://f30.bimmerpost.com/forums/sh....php?t=1742413 IG + YT: Sqwin_n20
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03-16-2024, 12:23 PM	#4
drhome New Member 3 Rep 15 Posts Drives: F30 Join Date: Mar 2024 Location: PL iTrader: (0)	Hey, I had the same problem and same error codes - which were a real mystery for me as shifters worked well. I've found out that it might be related to a clockspring wires or even FEM which are quite expensive in comparison to just puddles. Luckily after paddle shifters replacement codes are gone. I've cleared errors and tested it for a while everything works perfectly fine. P.s. Airbag removal is a pain in the a** so if you've never did that and you want to try to change PSs prepare for a real battle. Good luck guys!
	Appreciate 0 Quote