Scania fault code 406
Code 406 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Fuel pressure sensor, short circuit to earth
The engine control unit has detected an abnormal voltage, indicating that the fuel pressure sensor has a short circuit to earth.
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ELC Electronically controlled air suspension
Sensor signal from pressure sensor for left-hand side of driving axle.
The voltage on the input from the pressure sensor has been too low.
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