VOLVO
CPM-B1D2713 - Heater Coolant Pump. General Electrical Failures. Circuit open
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 found an open circuit in the cable to the coolant pump. The heater cannot be started until the fault code has been erased. The cause may be a broken cable, a connection with contact resistance or oxidation, or a damaged pump.
Possible causes
- Open circuit in the cable between the heater control module and the coolant pump
- Contact resistance, oxidation or loose connections
- Damaged coolant pump
What you can do
- 1With the ignition off, check the connectors at the pump and in the heater for contact resistance, looseness and oxidation.
- 2Use a multimeter to check that the cable to the coolant pump is not broken. If it is, the cable needs to be repaired or replaced.
- 3If you have a diagnostic tool: activate the water pump and listen for a buzzing sound. If it does not start, the fault is still present.
- 4If the wiring is in good condition but the pump does not run, it may be blocked. Replace the pump if it is damaged, or have a workshop do it.
- 5If you are unsure about the pump after these checks, have a workshop assess it with diagnostic equipment.
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.