VOLVO
CEM-5F40 - Fuel pump. Signal too low
System
Zentralelektronik (CEM)
Volvo-Modelle, für die dieser Fehlercode 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 (10)
- Volvo S60 (2001–2009)2001, 2005–2009
- Volvo S60 (2001–2009)2002Alle Motoren außer: D5244T2
- Volvo S60 (2001–2009)2003Alle Motoren außer: B5244S6, D5244T2
- Volvo S60 (2001–2009)2004Alle Motoren außer: B5244S6, B5254T4, D5244T2
- Volvo S80 (1999–2006)1999–2002, 2005–2006
- Volvo S80 (1999–2006)2003–2004Alle Motoren außer: B5254T2
- Volvo V70 (2000–2008)2000–2003, 2005–2008
- Volvo V70 (2000–2008)2004Alle Motoren außer: B5254T4
- Volvo V70 XC / XC70 (2001–2007)2001–2007
- Volvo XC90 (2003–)2003–2015
Was bedeutet der Fehlercode?
The central electronic module (CEM) has registered that the signal in the fuel pump circuit is too low. The cause may be poor contact, an open circuit or earth fault in the wiring, a damaged fuel pump or a damaged overheat protection thermostat. The fault shows when the heater is active and causes poor heating in the passenger compartment.
Mögliche Ursachen
- Contact resistance in the control unit or fuel pump connector
- Signal wire short-circuited to ground
- Open circuit in the signal or voltage wire
- Damaged fuel pump
- Damaged overheat protection thermostat
Was Sie tun können
- 1Read and note the code, clear it and activate the heater to see whether the fault returns
- 2Check the connectors at the fuel pump and the control unit for loose connections and corrosion, and remedy if needed
- 3If the heater works again after the connectors are repaired, the fault was probably poor contact
- 4Have a workshop check the overheat protection thermostat and replace it if it is damaged
- 5Use a multimeter to check that the wires to the fuel pump have no break and no contact with ground (the body)
Symptome, die Sie bemerken können1
- Poor heating in the passenger compartment
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.