General Category > ABS related issues
2004 R1200GS High rear brake pressure fault code 24972 !
Finny:
I am sure there has been lots of discussion on this topic. Have done some research but am looking for guidance and direction for this newbie. Residual braking on rear(front is fine) with warning lights going off there head. This issue was intermittent (say 50miles or 85 kms into a ride before it lost the rears. Had a BMW dealer bleed the ABS and now is constant. Advice was replace the unit at A$3000 >:( I would like to exhaust all other possible options before going down this track. Cheers Finny
Jughead:
--- Quote from: Finny on October 01, 2017, 11:06:43 PM ---I am sure there has been lots of discussion on this topic. Have done some research but am looking for guidance and direction for this newbie. Residual braking on rear(front is fine) with warning lights going off there head. This issue was intermittent (say 50miles or 85 kms into a ride before it lost the rears. Had a BMW dealer bleed the ABS and now is constant. Advice was replace the unit at A$3000 >:( I would like to exhaust all other possible options before going down this track. Cheers Finny
--- End quote ---
One of the pressure sensors has failed. There are 4 altogether, being front control, front wheel, rear control and rear wheel.
Your error lies on one of the rear circuits, but the error code should tell you whether it is the control or wheel circuit that is faulty.
Sensor looks like this:
Finny:
Thanks Jughead for your response. Just ran the test again and the fault code reads 24972 Pressure in rear wheel circuit to high. The sensor looks quite involved and where have you opened up to expose it ? Sounds bad to me. Paul
Jughead:
Am busy with a pump as we speak. Took this little screen clip that may interest you.
Note the 4 pressure circuits.
Pressure in front control circuit is monitored and the values change accordingly.
Pressure in rear control circuit is monitored and the values change accordingly.
Pressure in front wheel circuit is monitored and the values change accordingly.
Pressure in rear wheel circuit is monitored but the value does not change and is stuck on 127.20 Bar.
This pump initially gave me errors front and rear. I have replaced just the front sensor and that is now working 100%. Now to strip it again and do the rear.
https://youtu.be/1I_k5fMcNWE
Finny:
Really appreciate your input as I think I may have similar issues.
Staionary Test Front brake applied Rear brake applied
Pressure in front wheel control circuit 18 47
Pressure in rear wheel control circuit. 18 40
Pressure in front wheel wheel circuit 19 28
Pressure in rear wheel wheel circuit 101 101
I found a post by you showing how to remove and check the sensors for sticking in the ABS unit which may be my issue.
I might let you work through your current unit and see how that goes.
Cheers Paul
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