VOLVO
DEM-P066615 - PCM / ECM / TCM Internal Temperature Sensor Circuit. General Electrical Failures. Circuit short to battery or open
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–)2007–2012
- Volvo V60 (2011–)2011–2012
- Volvo V70 (2008–)2008–2012
- Volvo XC60 (2009–)2009–2012
- Volvo XC70 (2008–)2008–2012
- 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 module monitors whether the oil temperature sensor signal stays at a sensible level. The code is stored when the signal is missing or too low, which can be caused by a break or a short to voltage in the signal wire, or by a damaged sensor. The four-wheel drive is disengaged while the fault is present.
Possible causes
- Contact resistance and oxidation in the connectors
- Break or short to voltage in the signal wire
- Damaged oil pressure and oil temperature sensor
- Damaged temperature sensor in the control module
- Damaged four-wheel drive control module (DEM)
What you can do
- 1Read and erase the code, then road test to see whether it returns
- 2Check that the fuses are intact
- 3Check the connector to the oil temperature sensor for oxidation and loose contacts, and look for chafing or pinching in the wire
- 4Use a multimeter to check that the signal wire has no contact with battery voltage when it is disconnected at both ends
- 5If the code returns, have a workshop with diagnostic equipment check the sensor and replace the four-wheel drive control module if needed
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.