Applies to: EBS5
What does Scania EBS fault code 521 mean?
Incorrect or unreliable data.
What causes Scania DTC 521?
Internal fault in the control unit.
How does the system react?
The red warning lamp comes on and no brake-related user functions work.
How to fix Scania EBS fault code 521?
- Clear the fault code and switch off the voltage with the starter key.
- If the fault code recurs after the system is restarted, the control unit must be renewed.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.
Code 521 in other Scania systems
- 521hex 0209 Orange CAN bus
- 521hex 0209 Orange CAN bus
- 521hex 0209 Micro switch rear door passenger side (truck)/micro switch A4 (bus), short circuit
- 521hex 0209 Communication fault, CAN bus for expansion units
- 521hex 0209 CAN communication
- 521hex 0209 Brake pedal sensor
- 521hex 0209 LIN bus 1, no communication
- 521hex 0209 TCC control unit, communication is missing with LIN bus 1
- 521hex 0209 The clutch pedal position cannot be read
- 521hex 0209 Output signal