Volvo Guided Diagnostics
Date: Information Type:
11/17/2011 Diagnostics Fault Codes 128: Engine ECU 97: Pressure Release Valve
Profile:
EXC, EC290B LC (Volvo) [GB] EXC, EC290B LC (Volvo) [GB] EXC, EC290B LC (Volvo) [GB] EXC, EC290B LC (Volvo) [GB]
EXC, EC290B LC (Volvo) [GB]
MID128 Engine ECU;PSID97 Pressure Release Valve(128 PSID97)
128 PSID97
Reference 230 Fuel system, description
237 Fuel control valve (FCV), description
237 Injectors, description
Fault mode diagnosis
Fault mode Detection conditions:The engine control unit (E-ECU) registers: Leakage when the
FMI 0 pressure relief valve is open
Symptom: Possible causes:
Red central warning Defective rail pressure sensor
Buzzer sounds continuously Defective fuel control unit
Error message screen Pressure relief valve locked in
Max. speed is limited to 1100 rpm open position
by the engine protection function
Low power because of engine
protection
Rail pressure limitation
Engine shutdown
Action 3021 MID 128 PID 164 Injection control pressure
3021 MID 128 SID 42 Fuel control unit
237 Fuel rail pressure, checking
Fault mode Detection conditions:The engine control unit (E-ECU) registers: Pressure relief valve stuck
FMI 7 closed
Symptom: Possible causes:
Red central warning Pressure relief valve stuck closed
Buzzer sounds continuously Defective fuel control unit
Error message screen Defective rail pressure sensor
Max. speed is limited to 1100 rpm
by the engine protection function
Low power because of engine
protection
Rail pressure limitation
Engine shutdown
Action 3021 MID 128 PID 164 Injection control pressure
3021 MID 128 SID 42 Fuel control unit
237 Fuel rail pressure, checking
Fault mode Detection conditions:The engine control unit (E-ECU) registers: High common rail
FMI 11 pressure when the pressure relief valve is open
Symptom: Possible causes:
Red central warning Defective rail pressure sensor
Buzzer sounds continuously Pressure relief valve stuck closed
Error message screen Defective fuel control unit
Max. speed is limited to 1100 rpm
by the engine protection function
Low power because of engine
protection
Rail pressure limitation
Engine shutdown
Action 3021 MID 128 PID 164 Injection control pressure
3021 MID 128 SID 42 Fuel control unit
237 Fuel rail pressure, checking
Fault mode Detection conditions:The engine control unit (E-ECU) registers: Pressure relief valve is
FMI 14 open
Symptom: Possible causes:
Red central warning Fuel control valve stuck open
Buzzer sounds continuously Defective fuel control unit
Error message screen Defective rail pressure sensor
Max. speed is limited to 1100 rpm Pressure relief valve locked in
by the engine protection function open position
Low power because of engine
protection
Rail pressure limitation
Engine shutdown
Action 3021 MID 128 SID 42 Fuel control unit
237 Fuel rail pressure, checking
Guided Diagnostics
