VOLVO
CEM-1A21 - Increased power supply relay. Signal too high. 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 CEM has registered that the relay driver for the extended X-supply relay is short-circuited to supply voltage, and the fault is intermittent. It was present at an earlier time but is no longer there. The relay may be installed incorrectly or have poor contact.
Mulige årsaker
- Incorrectly installed relay
- Contact resistance in the relay terminals
Hva du kan gjøre
- 1Check that the relay sits correctly in its place and is fully pushed in
- 2Check that the relay connectors are secure and clean
- 3Clear the code and road test the car to see whether it returns
- 4If the fault returns, have a workshop replace the relay
Symptomer du kan merke3
- Power seat does not operate at all
- No gauges are working
- The instrument lighting does not operate
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.