Volvo Guided Diagnostics Date: 12-01-2012
Information Type: Diagnostics Fault Codes
128: Engine ECU
96: Rail pressure system
Profile: EXC, EC210B LC (Volvo) [GB] EXC, EC210B LC (Volvo) [GB] EXC, EC210B LC (Volvo) [GB] EXC, EC210B LC (Volvo) [GB] EXC, EC210B LC (Volvo) [GB]
MID128 Engine ECU;PSID96 Rail pressure system(128 PSID96) 128 PSID96 Reference
230 Fuel system, description 237 Fuel control valve (FCV), description 237 Injectors, description
Fault mode diagnosis Fault mode FMI 0
Detection conditions:The engine control unit (E-ECU) s: 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 engine control unit (E-ECU) s: 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
Action
3021 MID 128 SID 42 Fuel control unit 237 Fuel rail pressure, checking
Fault mode FMI 4
Detection conditions:The engine control unit (E-ECU) s: 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 engine control unit (E-ECU) s: 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
Defective fuel control valve Defective injectors Pressure relief valve unwanted opening High pressure leakage Low pressure circuit Defective rail pressure sensor
3021 MID 128 PID 164 Injection control pressure 3021 MID 128 SID 42 Fuel control unit 237 Fuel rail pressure, checking Guided Diagnostics