VOLVO
CPM-5401 - 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. The heater cannot be activated until the code has been cleared. If the fault was temporary, it may have been caused by interference when the module starts up, whereas a permanent fault means 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; if it does not come back, the fault may have been temporary
- 2Check that the connectors at the CPM are secure and free from oxidation
- 3If the code returns at the next start, the fault is recurring and the module must be replaced
- 4If the fault returns, have a workshop replace the combustion preheater module
Symptoms you may notice1
- 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.