Variant 1
Applies to: EMS S7EMS S8
What does Scania EMS fault code 771 mean?
What causes Scania DTC 771?
How does the system react?
How to fix Scania EMS fault code 771?
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Variant 2: Steering wheel switch for cruise control, CAN messages missing
Applies to: EMS10
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.
Code 771 in other Scania systems
- 771hex 0303 Communication with the brake management system (BMS)
- 771hex 0303 Engine start switch signal
- 771hex 0303 Air suspension remote control 2
- 771hex 0303 Door motor brake front door leadf, open circuit output
- 771hex 000303 Coordinator, no CAN communication
- 771hex 0303 Communication with the coordinator (COO)
- 771hex 0303 Communication with the engine control unit (EMS).
- 771hex 0303 Sensor for battery hatch, open circuit
- 771hex 000303 CAN message missing
- 771hex 0303 Control box 1
- 771hex 0303 TCC control unit, current too high