Description
Common Problems
The C123EF0 fault code often occurs in Audi vehicles. When this problem happens, the ABS warning light comes on. At the same time, the traction control light may also turn on. Drivers usually see the error message: ‘Brake system fault stop carefully.’
This fault causes the ABS system to stop working, which removes emergency braking functionality. Because of this, the car relies only on standard braking. This makes driving riskier, especially during emergencies or in bad weather. Fixing the issue quickly ensures the car stays safe to drive and prevents further problems.
Common Affected Part Numbers
This fault is often linked to these part numbers:
8W0907379G, 8W0 907 379 G, 8W0907379J, 8W0 907 379 J, 0265956241, 0265256306, 0 265 256 306.

