Audi ABS C123EF0 fault

[madman47]

Hello,
Does anyone know how to repair the late model Audi B8/B9 ABS systems with C123EF0 fault code for (hydraulic brake booster-limit value reached).
It is caused by defective pressure sensor.
According to Audi it cannot be reset and a replacement ABS pump/ECU is required, however a company ECUtesting seems to be able to repair.

Can anyone help?

[pawl]

hello, it's probably http://www.digital-kaos.co.uk/forums/images/icons/icon1.png Audi ABS C123EF0 fault

Hello,
Does anyone know how to repair the late model Audi B8/B9 ABS systems with C123EF0 fault code for (hydraulic brake booster-limit value reached).
It is caused by defective pressure sensor.
According to Audi it cannot be reset and a replacement ABS pump/ECU is required, however a company ECUtesting seems to be able to repair.

Can anyone help?

to replace the sensor, it's a waste of your precious time, the ecu stays the same

[madman47]

Yes, i know. The question is how to repair the ECU??

[Autotroniceire]

Yes, i know. The question is how to repair the ECU??

did you ever find out more info ? I had car here to repair but fitted second hand in the end and coded. Tried to reflash etc made no difference. Also i have seen when they have been repaired by ecu testing tge cover on control module is removed and resealed. I presume they are repairing eeprom/flash file inside like ford ranger bcm repair

[madman47]

Yes I think it is an eprom ‘lock out’

No I never found out cause.
Customer took to dealer and fitted new one.


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[Aps]

Hi, I have a solution for error C123EF0 , I can help if necessary

WhatsApp, Telegram , +37360014890

[Aps]

error C123EF0

[Limard]

i have same problem with that
can youhelp me ?

[Limard]

this one /after that i need to code online orany another manipulation ?

[Aps]

Hello everyone, I can help with the C123EF0 Fault (ERROR) on Audi and Volkswagen ABS, I also know how to do a lot of things in electrics, mileage adjustment, registration of keys for new cars, and I can also help with FBS 4 for Mercedes
ERROR C123EF0 AUDI
Fault c123ef0 Volkswagen

NO CONTACT DETAILS PLEASE

[albdiag]

Can any one reset C123EF0 counter in eeprom pls?

Touareg 2020 - abs 4M6907379AF

eeprom 25256

Thx

[bogdy]

Audi ABS, redo the solder joints on the processor, in the ABS unit

[albdiag]

not in this case. this is totally other thing. its the booster sensor that trigeers this error that can not be deleted and the eeprom must be reset.

Please reset my eeprom file

[Tlokenauake]

If anyone has problems with error C123EF0, I can help clear the dump ! PM me...
I clean your eeprom file, all you have to do is install ABS and delete the error history C123EF0 !
Whatsapp +79213052755