VOLVO
CEM-B139E01 - Main Battery Diode. General Failure Information. General electrical failure
System
Zentralelektronik (CEM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
8 ModelleS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Modelle nach Baujahr und Motor anzeigen (17)
- Volvo S60 (2011–)2011–2012
- Volvo S60 (2011–)2013–2014Nur Motor: B5204T8, B5204T9, D5204T3, D5204T7 · Nur Getriebe: TF-80SD
- Volvo S60 (2011–)2015Nur Motor: D5204T3, D5204T7 · Nur Getriebe: TF-80SD
- Volvo S80 (2007–)2011
- Volvo S80 (2007–)2012, 2015Nur Motor: D5204T3 · Nur Getriebe: TF-80SD
- Volvo S80 (2007–)2013–2014Nur Motor: D5204T3, D5204T7 · Nur Getriebe: TF-80SD
- Volvo V40 (2013–)2013–2015
- Volvo V40 Cross Country (2013–)2013–2015
- Volvo V60 (2011–)2011
- Volvo V60 (2011–)2012Nur Motor: D5204T3 · Nur Getriebe: TF-80SD
- Volvo V60 (2011–)2013–2014Nur Motor: B5204T8, B5204T9, D5204T3, D5204T7, D82PHEV · Nur Getriebe: TF-80SD
- Volvo V60 (2011–)2015Nur Motor: B5204T9, D5204T3, D5204T7, D82PHEV, D87PHEV · Nur Getriebe: TF-80SD
- Volvo V70 (2008–)2011
- Volvo V70 (2008–)2012Nur Motor: D5204T3 · Nur Getriebe: TF-80SD
- Volvo V70 (2008–)2013–2015Nur Motor: D5204T3, D5204T7 · Nur Getriebe: TF-80SD
- Volvo XC60 (2009–)2011
- Volvo XC70 (2008–)2011
Was bedeutet der Fehlercode?
This fault code only applies to cars with automatic engine start/stop. The main battery diode has a safeguarding role: when the secondary battery cannot keep up with the car's consumers during cranking, the diode makes sure the main battery contributes. The CEM monitors the diode, and the fault is stored when the voltage difference is wrong for too long.
Mögliche Ursachen
- Open circuit in the wire between the main battery and the main battery diode
- Damaged battery diode
Was Sie tun können
- 1Check that the main battery is fully charged and that the fuses are intact
- 2Check the wire between the main battery and the main battery diode for breaks, loose connectors and corrosion
- 3Check the connections at the battery and at the diode: corroded or loose terminals should be cleaned and tightened
- 4If you have a diagnostic tool, compare the voltage from the main battery and the secondary battery in live data while the engine is started
- 5If the fault remains after these checks, have a workshop check and if needed replace the battery diode
Symptome, die Sie bemerken können2
- The automatic start/stop function does not work while driving
- The automatic start/stop function does not work at idle
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.