X posted dme q's and help needed for 08 335xi

Papa_Lion · 11-28-2015, 07:50 PM

Car took a shit on me for the eleventeenth time. Gave her a couple hard pulls, mods are jb4, e20 and bmw dci. Then limp mode and lots of codes. Not sure on this one.

30BA DME internal failure
29CD-CF Misfire codes for cylinder 1-3
29DC injection switch off

Cleared codes still limp mode then this along with fuel smell. So it was rich, could unburned fuel have caused these other two?
30BA DME Internal failure
2D60 fuel mass, monitoring
2C3B Lambda probe in front of catalytic converter, not plugged

Cleared and still in limp mode with only
30BA DME Internal failure

Car has been running fine up to roughly my own e30-e35 mix for months. Recently found e20 out of the pump, still ran good. Needs walnut blasting, idle not super smooth, but new plugs and coils. Pulls hard, but I can tell the valves are caked unevenly. Should pull harder. Hasn't thrown me into limp mode since before I swapped coils 5 months ago. Does it sound like new mosfets are needed?

Please advise and thanks!

Miller335 · 11-28-2015, 08:32 PM

Sounds like your DME is fried.
Is it an 07?

You usually need to replace the coil pack on the cylinder that blew the mosfet on the DME also.

Papa_Lion · 11-28-2015, 08:48 PM

I have 5 spares. I also have time to tear the dme out and check the mosfets. Will these work?
http://www.newark.com/vishay-silicon...edirect%20Link

Papa_Lion · 11-28-2015, 08:58 PM

08

Papa_Lion · 11-28-2015, 09:00 PM

Is my dme this one?

Papa_Lion · 11-28-2015, 11:20 PM

Need help on this asap peeps. Need to order new MOSFET's if advised to do so. I don't have a spare ride. Just need a few more to chime in. If y'all need more info I can provide. Thanks.

Papa_Lion · 11-28-2015, 11:22 PM

Oh, all codes but the DME failure went away so that's why I'm leaning towards the MOSFET's.

Papa_Lion · 11-29-2015, 06:37 PM

Tested all mosfets, cylinder one mosfet is toast. Could that cause the dme internal failure code 30BA....anyone? Also my trims were out of whack according to a log at the beginning of the month. I just read it to my mechanic, but he's not a bmw mechanic, so he's not sure how one bad mosfet would affect the dme.

Miller335 · 11-30-2015, 10:09 AM

Quote:

Originally Posted by Papa_Lion

Tested all mosfets, cylinder one mosfet is toast. Could that cause the dme internal failure code 30BA....anyone? Also my trims were out of whack according to a log at the beginning of the month. I just read it to my mechanic, but he's not a bmw mechanic, so he's not sure how one bad mosfet would affect the dme.

Yes, it will throw that DME error code.
I would spend some time searching this site on DME failures, all the info is at your fingertips and can explain things better than I can.

m_fife · 11-30-2015, 06:15 PM

Replacement MOSFETs

http://www.futureelectronics.com/en/...30TM.aspx?IM=0

Papa_Lion · 12-04-2015, 06:53 PM

Ended up just sending dme out to be diagnosed and fixed. They confirmed what I already knew. Set me back $220, but came with lifetime warranty. Now I lost my key fob when I flipped my rig in the ice last Monday. When it rains it pours...

11-28-2015, 07:50 PM	#1
Papa_Lion Private 8 Rep 55 Posts Drives: 335xi Join Date: Jul 2014 Location: us iTrader: (0)	X posted dme q's and help needed for 08 335xi Car took a shit on me for the eleventeenth time. Gave her a couple hard pulls, mods are jb4, e20 and bmw dci. Then limp mode and lots of codes. Not sure on this one. 30BA DME internal failure 29CD-CF Misfire codes for cylinder 1-3 29DC injection switch off Cleared codes still limp mode then this along with fuel smell. So it was rich, could unburned fuel have caused these other two? 30BA DME Internal failure 2D60 fuel mass, monitoring 2C3B Lambda probe in front of catalytic converter, not plugged Cleared and still in limp mode with only 30BA DME Internal failure Car has been running fine up to roughly my own e30-e35 mix for months. Recently found e20 out of the pump, still ran good. Needs walnut blasting, idle not super smooth, but new plugs and coils. Pulls hard, but I can tell the valves are caked unevenly. Should pull harder. Hasn't thrown me into limp mode since before I swapped coils 5 months ago. Does it sound like new mosfets are needed? Please advise and thanks! Last edited by Papa_Lion; 11-28-2015 at 09:33 PM..
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11-28-2015, 08:32 PM	#2
Miller335 Colonel 293 Rep 2,189 Posts Drives: 2007 E92 Join Date: Oct 2013 Location: Portland, OR iTrader: (0)	Sounds like your DME is fried. Is it an 07? You usually need to replace the coil pack on the cylinder that blew the mosfet on the DME also. __________________ 2007 E92 335 6MT w/335is clutch FBO MHD E60 Wedge map 49k miles
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11-28-2015, 08:48 PM	#3
Papa_Lion Private 8 Rep 55 Posts Drives: 335xi Join Date: Jul 2014 Location: us iTrader: (0)	I have 5 spares. I also have time to tear the dme out and check the mosfets. Will these work? http://www.newark.com/vishay-silicon...edirect%20Link
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11-28-2015, 08:58 PM	#4
Papa_Lion Private 8 Rep 55 Posts Drives: 335xi Join Date: Jul 2014 Location: us iTrader: (0)	08
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11-28-2015, 09:00 PM	#5
Papa_Lion Private 8 Rep 55 Posts Drives: 335xi Join Date: Jul 2014 Location: us iTrader: (0)	Is my dme this one?
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11-28-2015, 11:20 PM	#6
Papa_Lion Private 8 Rep 55 Posts Drives: 335xi Join Date: Jul 2014 Location: us iTrader: (0)	Need help on this asap peeps. Need to order new MOSFET's if advised to do so. I don't have a spare ride. Just need a few more to chime in. If y'all need more info I can provide. Thanks.
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11-28-2015, 11:22 PM	#7
Papa_Lion Private 8 Rep 55 Posts Drives: 335xi Join Date: Jul 2014 Location: us iTrader: (0)	Oh, all codes but the DME failure went away so that's why I'm leaning towards the MOSFET's.
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11-29-2015, 06:37 PM	#8
Papa_Lion Private 8 Rep 55 Posts Drives: 335xi Join Date: Jul 2014 Location: us iTrader: (0)	Tested all mosfets, cylinder one mosfet is toast. Could that cause the dme internal failure code 30BA....anyone? Also my trims were out of whack according to a log at the beginning of the month. I just read it to my mechanic, but he's not a bmw mechanic, so he's not sure how one bad mosfet would affect the dme.
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11-30-2015, 06:15 PM	#10
m_fife First Lieutenant 129 Rep 339 Posts Drives: 2018 M5 Join Date: Jan 2013 Location: USA iTrader: (0)	Replacement MOSFETs http://www.futureelectronics.com/en/...30TM.aspx?IM=0 Last edited by m_fife; 11-30-2015 at 06:15 PM.. Reason: edit
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12-04-2015, 06:53 PM	#11
Papa_Lion Private 8 Rep 55 Posts Drives: 335xi Join Date: Jul 2014 Location: us iTrader: (0)	Ended up just sending dme out to be diagnosed and fixed. They confirmed what I already knew. Set me back $220, but came with lifetime warranty. Now I lost my key fob when I flipped my rig in the ice last Monday. When it rains it pours...
	Appreciate 0 Quote