VOLVO
DEM-P118854 - Calibration Memory. System Programming Failures. Missing calibration
System
Differential Electronic Module (DEM)
Volvo models this fault code applies to
Applies to the following models:
1 modelXC90 (2003–)
Show models by year and engine (6)
- Volvo XC90 (2003–)2005Transmission TF-80SC AWD only
- Volvo XC90 (2003–)2006Engine B8444S only · Transmission TF-80SC AWD only
- Volvo XC90 (2003–)2007–2010Engine 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 four-wheel drive control module (DEM) checks its calibration software, and the code is stored when it finds a fault in the calibration. This means that the base values that should be stored are missing or wrong. The module cannot be calibrated in the aftermarket, so the fault is remedied by replacing the module. The four-wheel drive is disengaged in the meantime.
Possible causes
- The four-wheel drive control module (DEM) is not calibrated
- Damaged four-wheel drive control module (DEM)
What you can do
- 1Read and erase the code, then road test to see whether it returns
- 2If the fault is intermittent and does not come back, it was probably a disturbance when the module started
- 3If the code returns, have a workshop with diagnostic equipment check and replace the four-wheel drive control module
Symptoms you may notice2
- The four-wheel drive does not work
- Warning symbol and message in the display
What the fault can affect1
- The four-wheel drive is disengaged
General guidance for car owners. Diagnosis on the car can point to a different cause.