VOLVO
CPM-U300044 - Control Module. System Internal Failures. Data memory failure
System
Combustion Pre-heater Module (CPM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsV40 (2013–), V40 Cross Country (2013–)
Show models by year and engine (2)
What does this fault code mean?
The heater control module has registered an internal fault in its data memory. The heater cannot be started until the fault code has been erased. If the fault has only happened once, it may have been a temporary disturbance, but if it returns the control module needs replacing.
Possible causes
- Internal fault in the heater control module
What you can do
- 1Erase the fault code and run the heater again. If the fault has only occurred once, it is probably a temporary disturbance.
- 2If the fault returns, have a workshop download the latest software to the heater.
- 3If the fault continues after the update, have a workshop replace the heater control module.
Symptoms you may notice1
- The parking heater does not work
What the fault can affect1
- The heater cannot be started until the fault code has been erased
General guidance for car owners. Diagnosis on the car can point to a different cause.