VOLVO
CPM-B1D2411 - Glow Plug. General Electrical Failures. Circuit short to ground
System
Combustion Pre-heater Module (CPM)
Volvo models this fault code applies to
Applies to the following models:
9 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The combustion preheater module (CPM) measures the resistance of the glow plug. The fault is set when the resistance is too low and/or the glow plug is shorted to earth. The cause may be a damaged glow plug, damaged cables or poor connections. The heater's function is then blocked.
Possible causes
- Faulty cables and connections to the glow plug
- Damaged glow plug
- The cable between the CPM and the glow plug is shorted to earth
What you can do
- 1Check that the glow plug is seated properly and shows no signs of corrosion
- 2Check the cable to the glow plug visually for damage
- 3With the ignition off, check the glow plug connectors: they should be secure and free from oxidation
- 4Use a multimeter to check that the cable to the glow plug has no contact with earth (the body); if it does, the cable is shorted
- 5Have a workshop download the latest software to the module and then recheck the glow plug
Symptoms you may notice3
- Poor heating in the passenger compartment
- Activation of the parking or auxiliary heater does not happen
- The parking heater does not work
What the fault can affect1
- The heater's function is blocked
General guidance for car owners. Diagnosis on the car can point to a different cause.