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Old 09-16-2010, 08:23 AM   #1
Woksgolfy
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Join Date: Apr 2010
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Unhappy Error code 108...??? what the...!!!!

My auto electrician is having an issue with an error code: 108 continuous voltage/power, this code will not allow him to progress any further in terms of programming either of my ECU's which includes my old unit.
He removed my ECU and put the one I purchased from a BMW dealer and this is the error code that it gave, he replaced it with my old one and the same thing happened. Basically he has searched high and low though the internet and most BMW information doesn't appear to have this code?
My car doesnt start well in the morning, once warm it runs well. It almost seems like the motor wont reconnise when its cold?????

We have change the coil, new titanium plugs, checked air flow hose, change rev/idle control? the electrican has recently up graded his BOSCH code reader and this errors codes started at 100 but still no 108 error code help...!!!!!
any thoughts?
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Old 09-16-2010, 01:20 PM   #2
familytruckster
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sounds like a wiring problem. Maybe a fuse or relay. Grab a electrical troubleshootiing manual and find the constant power lead to the ECM
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Old 09-17-2010, 08:50 AM   #3
Woksgolfy
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Thanks for that familytruckster, eventually we had to take it to the BMW shop. The Techs reckon dont worry about the code 108, they tracked a electrical fault to the back break light where by the previous owner may have fitted an after market bolt which doesn't quite fit and kept shorting out my dash clock.

Further more, apparantly the morning start issue could be related to water in the cynlinder!!! bugger it could be a cracked head. We are going to get a compression test first even though I am not having to top up my water bottle. There is one other thing that could be related to the morning start is a air flow sensor? I am going to keep my second hand ECU as a back up, apparantly these cost $1200 new wow.
Thanks Again TI fans.
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Old 09-18-2010, 02:27 AM   #4
familytruckster
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eek, sorry to hear it's that much!

That code 108 might have been from that short though... That sounds like it would be the constant power.
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