VOLVO
CEM-1C05 - 30 Power supply. Signal too low. Intermittent fault
System
Zentralelektronik (CEM)
Volvo-Modelle, für die dieser Fehlercode gilt
Dieser Fehlercode hat je nach Modell, Modelljahr oder Motor unterschiedliche Bedeutungen. Wählen Sie die Bedeutung, die für Ihr Fahrzeug 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 (5)
Was bedeutet der Fehlercode?
The supply voltage from the battery to the CEM (30-supply) has been too low at some point. The fault is intermittent, so it may not be present right now. The cause is often poor contact in the connections, a weak battery or a defective generator.
Mögliche Ursachen
- Contact resistance or poor connections
- A weak battery that needs charging, giving low voltage
- A defective generator
Was Sie tun können
- 1Check that the battery terminals and connections are clean, tight and free of corrosion
- 2Check that the cables between the battery, generator and starter motor are intact and not chafed. Use a multimeter to check they have no break
- 3Check that the battery is charged. Charge it if needed
- 4Check the generator connections and the connectors to the CEM. With a diagnostic tool, follow the battery voltage in live data with the engine running
- 5After the work, clear the code and check that the charging warning does not light again
Symptome, die Sie bemerken können4
- The charging lamp lights while the engine is running
- The headlight bulbs burn out
- The starter motor turns slowly
- The battery discharges
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.