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.
Most problems are usually something simple !
Originally Posted by noego
It's Deja Poo - as in, I've heard this **** before.
Calypso Red 1992 525i with 200K miles
1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold