VOLVO
CEM-1C0A - Alternator control module (ACM). Voltage too high
System
Zentralelektronik (CEM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
5 ModelleS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Modelle nach Baujahr und Motor anzeigen (16)
- Volvo S60 (2001–2009)2005Alle Motoren außer: B5244S6
- Volvo S60 (2001–2009)2006Alle Motoren außer: B5244S6, D5244T4, D5244T5, D5244T6, D5244T7
- Volvo S60 (2001–2009)2007–2009Alle Motoren außer: D5244T4, D5244T5, D5244T7
- Volvo S80 (1999–2006)2005–2006
- Volvo V70 (2000–2008)2005Alle Motoren außer: D5244T3
- Volvo V70 (2000–2008)2006Alle Motoren außer: D5244T4, D5244T5, D5244T6, D5244T7
- Volvo V70 (2000–2008)2007Alle Motoren außer: D5244T4, D5244T5, D5244T7
- Volvo V70 (2000–2008)2008Alle Motoren außer: D5244T5, D5244T7
- Volvo V70 XC / XC70 (2001–2007)2005
- Volvo V70 XC / XC70 (2001–2007)2006Alle Motoren außer: D5244T4
- Volvo V70 XC / XC70 (2001–2007)2007Nur Motor: B5254T2
- Volvo XC90 (2003–)2005Alle Motoren außer: B8444S
- Volvo XC90 (2003–)2006Alle Motoren außer: B8444S, D5244T4
- Volvo XC90 (2003–)2007–2012Nur Motor: B5254T2
- Volvo XC90 (2003–)2013–2014Nur Motor: B5254T9
- Volvo XC90 (2003–)2015
Was bedeutet der Fehlercode?
The CEM checks the charging status of the battery. The battery voltage is measured by the rear electronic module (REM) and sent to the CEM over the CAN network, so faulty data from the REM can trigger this code. It may also be caused by a damaged charge regulator in the generator control module.
Mögliche Ursachen
- A battery charger with too high charging voltage was connected earlier
- A damaged generator control module (charge regulator)
Was Sie tun können
- 1Check that the battery terminals and cable connections are clean and tight
- 2Use a multimeter to measure the battery voltage with the engine off and running. Large differences point to a charging fault
- 3Check that the connectors to the REM are seated and free of corrosion
- 4If you have a diagnostic tool, compare the battery voltage in live data with the voltage the REM reports. The values should match
- 5After the work, clear the code and check that the charging voltage is normal
Symptome, die Sie bemerken können3
- The battery electrolyte boils with the engine running
- The headlight bulb burns out
- The engine starts unreliably or not at all
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.