VOLVO
CPM-8602 - Control module. Internal fault
System
Combustion Pre-heater Module (CPM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
What does this fault code mean?
The CPM has logged a fault inside itself. Activation stays blocked until the fault code is cleared. If the fault occurred only once, the cause may have been interference at start-up, but if it remains, the module must be replaced.
Possible causes
- Internal fault in the combustion preheater module (CPM)
What you can do
- 1Clear the code and start the heater again
- 2Check that the connectors at the module are secure and free from oxidation
- 3If the fault comes back at the next start it is permanent, and the module should be replaced by a workshop
Symptoms you may notice2
- Poor heating in the passenger compartment
- The parking heater does not work
What the fault can affect1
- The heater cannot be activated until the fault code has been cleared
General guidance for car owners. Diagnosis on the car can point to a different cause.