VOLVO
CEM-3A04 - Fuel pump. 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 at some point registered a signal that is too high. The fault is intermittent, so it may have occurred before without being active now. The usual cause is a short to plus or a defective relay, and the fuel pump may sound louder than usual.
Mulige årsaker
- A short to positive supply
- A defective relay
Hva du kan gjøre
- 1Check the fuel pump fuse. If it has blown, replace it once. If it blows again, use a multimeter to check the wire after it has no contact with ground
- 2Check that the fuel pump relay is seated correctly and that its contacts are not corroded
- 3Use a multimeter to check that the wire between the CEM and the fuel pump has no short to positive supply
- 4After the work, clear the code and check that the fuel pump does not sound unusual
Symptomer du kan merke2
- Noise from the fuel pump
- Noise from the engine compartment
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.