VOLVO
DEM-P18897A - Oil Pressure Pump Performance. Mechanical Failures. Fluid leak or seal failure
System
Differential Electronic Module (DEM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (10)
- Volvo S60 (2011–)2011–2012
- Volvo S80 (2007–)2009–2012
- Volvo V60 (2011–)2011–2012
- Volvo V70 (2008–)2009–2012
- Volvo XC60 (2009–)2009–2012
- Volvo XC70 (2008–)2009–2012
- Volvo XC90 (2003–)2009–2010Engine B6324S, B8444S only · Transmission TF-80SC AWD only
- Volvo XC90 (2003–)2011Engine B6324S5, B8444S only · Transmission TF-80SC AWD only
- Volvo XC90 (2003–)2012Engine B6324S5 only · Transmission TF-80SC AWD only
- Volvo XC90 (2003–)2013–2014Engine B6324S5, D5244T18 only · Transmission TF-80SC AWD only
What does this fault code mean?
The oil pressure pump keeps running well beyond the expected time when the accumulator is being topped up. This suggests that pressure is escaping somewhere in the system. The four-wheel drive control module (DEM) checks this with the engine running, and the code is set when the pump runs for too long. The fault can sit in the check valve of the oil filter or in a clogged oil filter.
Possible causes
- The non-return valve in the oil filter is stuck open
- The oil filter is clogged
What you can do
- 1Read off the fault code, note it and clear it. Test drive the vehicle to see if the fault returns
- 2If the oil filter or the oil in the coupling has recently been changed, tell the workshop
- 3Look for oil leaks at the coupling and underneath the vehicle
- 4If the fault remains, have a workshop change the oil filter and the oil in the coupling (AOC)
Symptoms you may notice1
- Four-wheel drive does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.