VOLVO
CEM-1C05 - 30 Power supply. Signal too low. Intermittent fault
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
5 modellerS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Hva betyr feilkoden?
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.
Mulige årsaker
- Contact resistance or poor connections
- A weak battery that needs charging, giving low voltage
- A defective generator
Hva du kan gjøre
- 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
Symptomer du kan merke4
- The charging lamp lights while the engine is running
- The headlight bulbs burn out
- The starter motor turns slowly
- The battery discharges
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.