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Discussion Starter #1
I was driving the car and all of a sudden I received a CEL, Increased Emissions, and a limp mode fault. I do have the fault codes. The drive home was extremely slow. I was if it didn't have enough power to go through the gears. When I would pull out into to traffic I was able to go as fast (maybe slower) as a 18-wheeler would when pulling into traffic.

P0305 Cylinder 5 Misfire Detected
P0304 Cylinder 4 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0301 Cylinder 1 Misfire Detected

P0300 Random Multiple Cylinder Misfire Detected

All help would be greatly appreciated.
 

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Is there a DIY on how to do it? I looked on youtube and didn't see anything.
See if this helps any. Another member will need to confirm if this is correct since I've not needed to mess with mine yet, not sure.

Believe these are the ones folks are suggesting to swap to see if the codes change banks after swapping and then clearing codes. If it does, you know you got a bad one.

https://www.newtis.info/tisv2/a/en/e60-m5-lim/wiring-functional-info/power-train/engine-electronics/ignition/ionic-current-control-unit-bank-2/1qP23f6
 

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See if this helps any. Another member will need to confirm if this is correct since I've not needed to mess with mine yet, not sure.

Believe these are the ones folks are suggesting to swap to see if the codes change banks after swapping and then clearing codes. If it does, you know you got a bad one.

https://www.newtis.info/tisv2/a/en/e60-m5-lim/wiring-functional-info/power-train/engine-electronics/ignition/ionic-current-control-unit-bank-2/1qP23f6



I do confirm, those are the ionic modules as suggested by Flacoramos, this is likely to be the culprit. The unit is controlling the spark plugs' coil. A defficiency of the ionic module will result on a full bank misfiring.
 

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Discussion Starter #8
what device do you use to read codes?
I no longer have the scanner that I borrowed

I use INPA on a surface pro to pull and reset currently and then websites to determine what code means.

You can also use scanning tools like this one, though I'm sure there are cheaper alternatives
https://www.ecstuning.com/b-schwaben-by-foxwell-parts/professional-bmw-mini-scan-tool/014020sch01a~scf/
I'll have to check it out.

I do confirm, those are the ionic modules as suggested by Flacoramos, this is likely to be the culprit. The unit is controlling the spark plugs' coil. A defficiency of the ionic module will result on a full bank misfiring.
I have will hopefully have someone looking at it in the next or so. I will throw that bug in their.
 
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