VOLVO
ECM-P301C00 - Electrical Coolant Pump - Emergency Run Switch. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
8 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (8)
- Volvo S60 (2011–)2014–2015Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9 only
- Volvo S80 (2007–)2014–2015Engine B4204T11, B4204T12, B4204T15 only
- Volvo V40 (2013–)2015Engine B4204T11 only
- Volvo V40 Cross Country (2013–)2015Engine B4204T11 only
- Volvo V60 (2011–)2014–2015Engine B4204T11, B4204T12, B4204T15, B4204T9 only
- Volvo V70 (2008–)2014–2015Engine B4204T11 only
- Volvo XC60 (2009–)2014–2015Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9 only
- Volvo XC70 (2008–)2014–2015Engine B4204T11 only
What does this fault code mean?
Even though the code is named emergency run switch, it concerns the status of the electric water pump. The engine control module (ECM) compares its control signal with the signal from the pump, and the code is set when they do not match.
Possible causes
- Contact resistance and oxidation in the connectors
- Damaged water pump
What you can do
- 1Read the code with a diagnostic tool and check whether it is active or only stored
- 2Check the connectors to the water pump for contact resistance and oxidation
- 3If you have a diagnostic tool: activate the water pump and see whether it starts
- 4Have a workshop check the pump if the fault remains, since a damaged water pump is a possible cause
Symptoms you may notice1
- No noticeable symptoms for the driver
What the fault can affect1
- If communication with the water pump is missing, the pump is turned off to protect it from overheating
General guidance for car owners. Diagnosis on the car can point to a different cause.