VOLVO
CEM-5F47 - Control unit power supply. Signal too high
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 (10)
- Volvo S60 (2001–2009)2001, 2005–2009
- Volvo S60 (2001–2009)2002Alle motorer unntatt: D5244T2
- Volvo S60 (2001–2009)2003Alle motorer unntatt: B5244S6, D5244T2
- Volvo S60 (2001–2009)2004Alle motorer unntatt: B5244S6, B5254T4, D5244T2
- Volvo S80 (1999–2006)1999–2002, 2005–2006
- Volvo S80 (1999–2006)2003–2004Alle motorer unntatt: B5254T2
- Volvo V70 (2000–2008)2000–2003, 2005–2008
- Volvo V70 (2000–2008)2004Alle motorer unntatt: B5254T4
- Volvo V70 XC / XC70 (2001–2007)2001–2007
- Volvo XC90 (2003–)2003–2015
Hva betyr feilkoden?
The central electronic module (CEM) has registered that the voltage to the heater control unit has been too high. This may be because a charger or starter unit set to the wrong voltage was hooked up, or because of a fault in the alternator. The check is made with the engine running, because the charging system is then active.
Mulige årsaker
- Defective alternator
- A charger or starter unit set to the wrong voltage is connected
- Damaged alternator
Hva du kan gjøre
- 1Check whether a charger or starter unit was hooked up to the battery, and that it was set to the correct voltage
- 2Clear the code and road test the car to see whether it returns
- 3If you have a diagnostic tool, read the charge voltage in live data with the engine running and check that it stays steady
- 4If the fault was a one-off, a faulty charger may have caused it, and it need not be fixed straight away
- 5Have a workshop check the alternator and charge regulator if the fault returns
Symptomer du kan merke4
- Poor interior heating
- Engine does not start or starts unreliably
- Warning lights and chimes: charging warning lit or not lit
- Alternator and charge regulator: power supply problems
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