Author Topic: Details wanted for Fault Code 23993  (Read 6466 times)


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Details wanted for Fault Code 23993
« on: April 14, 2016, 08:53:03 PM »

This is my second try to do this post. One wrong keypress and poof! the first try was gone. If you see that incomplete post about 23993 and wonder how I did it, so do I.  :(

My '09 K1300GT lights the Brake Error light and logs Fault Code 23993 when I use both brakes very hard like at a surprise red light stop. Also the rear brake pedal "gives" just a little bit right before the stop is complete. The Error light goes away when I turn the key off and back on.

My GS-911 reports "23993 Pressure monitoring, rear, secondary circuit"
Searching the 02/2009 edition of the BMW Repair Manual CD got no hits on "Fault" or "23993".

Does anybody recognize this Fault or is there a publication that elaborates on what to fix for error codes?

Thanks :)


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Re: Details wanted for Fault Code 23993
« Reply #1 on: April 18, 2016, 10:09:53 AM »
Hi Bill

Fault Code 23993  >> Comparison of integral braking request with rear wheel pressure
Condition for fault memory entry >>  Air in brake system
                                                           Pump delivery rate too low;
                                                           Separator valve leaking  (IntegralBrakeSystem)
What to do >>
Read out pressure values and check for plausibility, observe fault
Bleed brake circuit

Hope to show you the right way :)
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