VOLVO
CEM-5F4F - Start attempt. Too many unsuccessful attempts
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
5 modellerS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Vis modeller per årsmodell og motor (8)
- Volvo S60 (2001–2009)2001, 2005–2009
- Volvo S60 (2001–2009)2002Alle motorer unntatt: D5244T2
- Volvo S60 (2001–2009)2003–2004Alle motorer unntatt: B5244S6, D5244T2
- Volvo S80 (1999–2006)1999–2006
- Volvo V70 (2000–2008)2000–2002, 2005–2008
- Volvo V70 (2000–2008)2003–2004Alle motorer unntatt: B5244S6
- Volvo V70 XC / XC70 (2001–2007)2001–2007
- Volvo XC90 (2003–)2003–2015
Hva betyr feilkoden?
The control unit has indicated that a failed start attempt has taken place, and the central electronic module (CEM) then sets the code. When activated, the heater tries to start, and it makes several more attempts if it fails; the fault is registered when it receives a signal that the start failed. The fault shows when the heater is active.
Mulige årsaker
- No fuel supply to the heater
- Flame sensor covered with soot
- Blocked combustion air flow
- Contact resistance in the control unit connectors
- Open circuit or short to voltage supply in the flame sensor control wire
- Damaged flame sensor
Hva du kan gjøre
- 1Check that there is enough fuel in the tank and that the battery is not weak, as the heater will not start otherwise
- 2Inspect the fuel lines for damage or leakage, and make sure nothing blocks them. Use gloves and eye protection
- 3Check that the air intake and exhaust outlet of the heater are not blocked
- 4Check that the flame sensor is not sooty, and remedy the control unit connectors if they are loose or corroded
- 5Clear the fault codes once fuel and battery are in order, as otherwise the heater locks after three failed starts
Symptomer du kan merke2
- Poor interior heating
- Parking heater does not work
Hva feilen kan påvirke2
- The heater is not activated
- The heater cannot start again until the fault codes have been cleared
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