N54 Misfire MDS80

Kabreti · 06-18-2021, 10:05 AM

I have a BMW 335i 2008 N54 e93. And I have a Misfire:

P0305 Cylinder 5 - misfire detected
P0306 Cylinder 6 - misfire detected
P0304 Cylinder 4 - misfire detected
P0300 Rambom/Multiple Cylinder Misfire detected
30BB

I check injectors, ignition coils, spark plugs and they are fine. Y check the MDS80 and it is not sending a signal to the injector 4, 5, 6. I open the MDS80 and I check the 6 injector transistors and they look fine.

What else can I do? I am thinking of changing the 6 injector transistor, do you think it is a good idea?

TunafishE93 · 06-18-2021, 10:21 AM

Couldn't hurt, they are know to fail and if you have it out might as well.

06-18-2021, 10:05 AM	#1
Kabreti Registered 0 Rep 2 Posts Drives: BMW N93 335i 2008 Join Date: Dec 2020 Location: US iTrader: (0)	N54 Misfire MDS80 I have a BMW 335i 2008 N54 e93. And I have a Misfire: P0305 Cylinder 5 - misfire detected P0306 Cylinder 6 - misfire detected P0304 Cylinder 4 - misfire detected P0300 Rambom/Multiple Cylinder Misfire detected 30BB I check injectors, ignition coils, spark plugs and they are fine. Y check the MDS80 and it is not sending a signal to the injector 4, 5, 6. I open the MDS80 and I check the 6 injector transistors and they look fine. What else can I do? I am thinking of changing the 6 injector transistor, do you think it is a good idea?
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06-18-2021, 10:21 AM	#2
TunafishE93 Major 418 Rep 1,152 Posts Drives: BMW 335i Join Date: Dec 2019 Location: NV iTrader: (0)	Couldn't hurt, they are know to fail and if you have it out might as well.
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