~~Need Help~~

[Dmerry224]

I just bought another bimmer, 94 530i. But you know that computer in the dash that shows like your miles per gallon, and all that good stuff. Mine is reading PPPP on the screen and i cant get it to work.. IF you guys have any imput please let me know, thanks alot. I appreciate it..
Also selling my rx7 for a clean older Bimmer.. Let me know if your interested, have my offer posted in 3 series classifieds, Thanks again! Dustin

[Binjammin]

Hey dude, we're almost neighbors, I'm in the middle of CT. I forget how to reset the PPPP, but IIRC the answer was to disco the battery. Or maybe that was the cause?

:dunno

Ok did a quick search and found this on unofficialbmw:

What to do if you get PPPP displayed on the OBC

I've heard that disconnecting the battery for a long time (like 1 hour) will make this go away. I lived with this problem for several (3) years. I tried disconnecting the battery for the 1+ hours or so to no avail. The ultimate solution was to disconnect the computer itself from its multi-pin connector. I left it unhooked for approximately 24 hours. Upon reconnecting the computer.....viola a full up and running OBC II.
Jeff Wilcox
So here is what works most of the time.
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.




Welcome to the board dude. If you need a hand with your car or anything let me know, I'm only an hour or so away. Take a sec and fill out the registry, it's a stickied thread and easy to find. Get your post count up and post some pics of your car man.

[artguy]

I also have a '94 530i. Love the car.

[Dmerry224]

thanks alot Binjimmin... appreciate it.. Im going to try that right now.. I will def. let you know.

[Dmerry224]

there is no reset button guys. atleast i dont see it

[Binjammin]

Look in the upper left or upper right of the obc.

[Dmerry224]

noob question, but what is the OBC?? is that whats reading the PPPP??

[Dmerry224]

I dont see anything on it.

[ringle]

OBC = On Board Computer. And yes, that's what's reading "PPPP".

[Dmerry224]

Im doing it , and its blinking and beeping, but it is Keeping the PPPP??? any suggestions?

[Dmerry224]

Thanks Ringle.... I never really do mechanics on BMW, i have owned a few, but never erally worked on them.. I work on rotaries :) But would like to learn more about BMW.

[ringle]

I'm not sure if this will help, but try reading the info in this link....

http://home.iae.nl/users/bts/obc.htm

[ringle]

Go to the bottom of this link......

http://www.unofficialbmw.com/repair_faqs/obc.html


If all else fails, keep googling "BMW E34 OBC"

[ringle]

Here's some neat info as well, although off topic, (OBC Parked Car Ventilation Retrofit (http://www.bmwe34.net/e34main/upgrade/ventilation.htm)) at this site.....

http://www.bimmerdiy.com/dir/e34

[ringle]

http://member.rivernet.com.au/btaylor/BMWText/technical/OBCReadingPPPPOrAAAA.html

[ringle]

Victory! Problem fixed! Ends up, it was fuse #36 under the back seat. Somehow, I forgot to look under the backseat.

Pray tell what does #36 protect
On a 94 540 - Rear defogger
On a 95 540 - Rear defogger and DWA module - the problem car must be a 95
On an 89 535 - no such fuse
Have you tried this?

[Gregs///M]

If you're new to e34's then you need to check out www.bmwe34.net

[Dmerry224]

Where is this fuse?? i know one of the replys say behind one of the seats?? can anyone tell me a little better where i can exactly find this fuse... adn does it say #36 on it?? or what does it say on it.?? thanks again guys

[Dmerry224]

Hey guys, i did both.. i removed the fuse , and i removed the battery... No luck.. Still reads PPPP, and the anti theft with the radio... I need to get the code from that now, so i ahve to call the dealership with that seriel number... Thsi is getting a little more complicated then i thought hahaha... but anyway. Thanks for you help , any other suggestions guys would really reallllly be appreciated.