VOLVO
DEM-0006 - 0006 Feed pump. Faulty signal
System
Differential Electronic Module (DEM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS40 (2004–2013), S60 (2001–2009), S80 (1999–2006), V50 (2004–2013), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (14)
- Volvo S40 (2004–2013)2005–2010Transmission AW50/51 AWD, M66 AWD only
- Volvo S60 (2001–2009)2003–2005All transmissions except: AW55-50/51SN
- Volvo S60 (2001–2009)2006–2008All transmissions except: AW55-50/51SN, TF-80SC
- Volvo S60 (2001–2009)2009Transmission AW50/51 AWD, M58 only
- Volvo S80 (1999–2006)2003–2006Transmission AW50/51 AWD only
- Volvo V50 (2004–2013)2005–2010Transmission AW50/51 AWD, M66 AWD only
- Volvo V70 (2000–2008)2003–2005All transmissions except: AW55-50/51SN
- Volvo V70 (2000–2008)2006–2007All transmissions except: AW55-50/51SN, TF-80SC
- Volvo V70 XC / XC70 (2001–2007)2003–2007
- Volvo XC90 (2003–)2003–2004, 2006All transmissions except: AW55-50/51SN
- Volvo XC90 (2003–)2005All transmissions except: AW55-50/51SN, TF-80SC AWD
- Volvo XC90 (2003–)2007All transmissions except: AW55-50/51SN, TF-80SC
- Volvo XC90 (2003–)2008All transmissions except: TF-80SC
- Volvo XC90 (2003–)2009Transmission AW50/51 AWD only
What does this fault code mean?
The four-wheel drive control module (DEM) checks the signal from the feed pump and compares it with predefined limits. The code is stored when the signal is outside them while the engine runs and the speed is high enough. The fault may lie in the pump, in its wiring harness or in the control module, and meanwhile the four-wheel drive is blocked or disengaged.
Possible causes
- Faulty or damaged feed pump
- Damaged wiring harness to the feed pump
- Short to ground, giving too high a signal
- Break in the supply voltage, giving too low a signal
What you can do
- 1Read and erase the code, then road test to see whether it returns
- 2Check that the fuses are intact
- 3Switch on the ignition and listen for the four-wheel drive pump motor to start; it should hum and vibrate slightly. If it starts normally, the fault is not active right now
- 4Check that the connector to the feed pump is secure and free from oxidation, and that the wire is not chafed
- 5If the code returns, have a workshop with diagnostic equipment check and replace the feed pump or the four-wheel drive control module if needed
Symptoms you may notice1
- The four-wheel drive does not work
What the fault can affect2
- The four-wheel drive is blocked
- The four-wheel drive is disengaged
General guidance for car owners. Diagnosis on the car can point to a different cause.