Applies to: EMS S6
What does Scania EMS fault code 396 mean?
The voltage in the circuit has been below the permitted level.
What causes Scania DTC 396?
Short circuit in the sensor circuit. The fault may also be caused by a fault on the voltage supply to those components which share their voltage supply. If a fault is indicated on the oil pressure sensor at the same time, there is probably a fault on the shared internal voltage supply.
How does the system react?
There is a common voltage supply for the fuel supply pressure sensor, coolant temperature sensor, charge air pressure sensor, charge air temperature sensor and fan speed sensor. If a fault occurs in one of the sensors, the other sensor circuits may be affected. If the voltage is outside the permitted range, the control unit uses a pre-programmed value. An active fault code limits the maximum engine torque by approximately 30%.
How to fix Scania EMS fault code 396?
Check the fuel supply pressure sensor, coolant temperature sensor, charge air pressure sensor, charge air temperature sensor and fan speed sensor, along with the harness-to-harness connectors and electrical cables in the circuits.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.