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E34 (1989 - 1995)

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  #1  
Old 12-23-2012, 01:06 PM
525iclassicguy 525iclassicguy is offline
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Location: jonesboro, Ga
 
Join Date: Jul 2012
Posts: 26
Mein Auto: 89 525i BMW
OBC reads pppp

How do I reset my OBC cause it just keeps saying pppp
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  #2  
Old 12-23-2012, 01:27 PM
BMR_LVR's Avatar
BMR_LVR BMR_LVR is offline
Humble E34 lover
Location: Asheboro, NC
 
Join Date: Dec 2008
Posts: 5,264
Mein Auto: 1992 525i
Here is a possible fix:

With the key in the "Radio" position (Radio and OBC light up, but not the instrument cluster), press the "CODE" button. Then push the little reset-hole with a Pen and hold it, 'till the computer blinks in the display, and it will ask you for a time and date entry. - You now have re-adapted the coding plug to the computer. - Normally the computer goes into a PPPP mode when the car has been boosted, or some other very drastically voltage changes have occurred.

Give it a try and let us know if it works. If not, Gogle it and there are several threads on it.
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Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

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  #3  
Old 12-24-2012, 12:20 PM
paperplane94 paperplane94 is offline
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Location: Los Angeles, CA
 
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Mein Auto: 1989 525i M20B25
^What reset button?
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  #4  
Old 12-24-2012, 03:50 PM
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BMR_LVR BMR_LVR is offline
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Location: Asheboro, NC
 
Join Date: Dec 2008
Posts: 5,264
Mein Auto: 1992 525i
Quote:
Originally Posted by paperplane94 View Post
^What reset button?
Hmmm... not sure. I got the above from a quick Google search. It may be that it can only be accessed after removing the unit.
__________________
Most problems are usually something simple !

Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

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  #5  
Old 12-25-2012, 11:43 PM
paperplane94 paperplane94 is offline
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Location: Los Angeles, CA
 
Join Date: Jan 2012
Posts: 933
Mein Auto: 1989 525i M20B25
well, at least its not this:
http://forums.bimmerforums.com/forum...18&postcount=2

It may be an internal fault with the OBC unit itself. Try swapping it out with a known working one.
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