VOLVO
CPM-B1D2693 - Combustion Air Blower. Component Failures. No operation
System
Combustion Pre-heater Module (CPM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The combustion air fan in the auxiliary heater is blocked and cannot turn. The heater's function is blocked, and the heating becomes poor or slow in the front or rear part of the cabin. The cause may be a fan wheel blocked by frost or dirt, or a damaged fan motor.
Possible causes
- Blocked fan wheel
- Damaged fan motor
What you can do
- 1With the ignition off, check that the fan wheel is not blocked by ice or dirt. Clean it if needed.
- 2Check that the fan wheel turns freely by hand without resistance.
- 3If the fan wheel is frozen: erase the fault codes and test start the heater once the ice has melted.
- 4If you have a diagnostic tool: activate the heater fan. If no buzzing sound is heard, the fault is still present.
- 5If the wheel turns freely but the fan still does not work, replace the fan motor, or have a workshop do it.
Symptoms you may notice4
- The parking heater does not work
- The heat does not get hot enough in the front or rear section
- Warm-up is slow in the front or rear section
- The heater does not work with the temperature control
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.