Detection conditions:The conditions:The engine control unit (E-ECU) registers: that the rail pressure control is not working correctly Symptom:
Red central warning Buzzer sounds continuously Error message screen Full fuel flow delivery Max. speed is limited to 1100 rpm by the engine protection function Also sets MID 128 PSID 97 FMI 14 Low power because of engine protection Rail pressure limitation Engine shutdown
Possible causes:
Defective fuel control valve Defective rail pressure sensor Defective injectors
Action
3021 MID 128 SID 42 Fuel control unit 237 Fuel rail pressure, checking
Fault mode FMI 1
Detection conditions:The conditions:The engine control unit (E-ECU) registers: that the rail pressure control is not working correctly Symptom:
Red central warning Buzzer sounds continuously Error message screen Max. speed is limited to 1100 rpm by the engine protection function Also sets MID 128 PSID 97 FMI 14 Low power because of engine protection Rail pressure limitation Engine shutdown
Possible causes:
Defective fuel control valve Defective rail pressure sensor Defective injectors Pressure relief valve locked in open position High pressure leakage Low pressure circuit
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Action
3021 MID 128 SID 42 Fuel control unit 237 Fuel rail pressure, checking
Fault mode FMI 4
Detection conditions:The conditions:The engine control unit (E-ECU) registers: Low rail pressure Symptom:
Possible causes:
Red central warning Buzzer sounds continuously Error message screen Max. speed is limited to 1100 rpm by the engine protection function Also sets MID 128 PSID 97 FMI 14 Low power because of engine protection Rail pressure limitation Engine shutdown
Defective fuel control valve Air in fuel system Defective injectors Pressure relief valve locked in open position High pressure leakage Low pressure circuit Defective rail pressure sensor
Action
3021 MID 128 PID 164 Injection control pressure 3021 MID 128 SID 42 Fuel control unit 237 Fuel rail pressure, checking
Fault mode FMI 12
Detection conditions:The conditions:The engine control unit (E-ECU) registers: that the rail pressure control is not working correctly Symptom:
Action
Possible causes:
Red central warning Buzzer sounds continuously Error message screen Max. speed is limited to 1100 rpm by the engine protection function Also sets MID 128 PSID 97 FMI 14 Low power because of engine protection Rail pressure limitation Engine shutdown
