Applies to: EMS S6 IoM singlespeed (S6IM)EMS S6EMS S6 (EMS S6 EuroIII)
What does Scania EMS fault code 4355 mean?
The signal from rotational speed sensor T74 has indicated an implausible rotational speed decrease below the level at which the sensor detects that the flywheel has completed one revolution.
What causes Scania DTC 4355?
Interference on the speed signal from the engine speed sensor. The fault code may be generated when starting in extremely cold weather or with a poor battery.
How does the system react?
If fault code 4359 has been generated at the same time, then the signal must have been absent for several engine rotations, otherwise the fault is due to a temporary disturbance. If only one of the rotational speed sensors is faulty, the maximum engine torque is reduced by 30% as long as the fault is active. In addition, the engine's high idle speed is lower than usual. If both rotational speed sensors are faulty, the engine will shut down.
How to fix Scania EMS fault code 4355?
- Check the rotational speed sensors, harness-to-harness connectors and electrical cables.
- Check the battery voltage.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.