VOLVO
ECM-145C - Fan System Component Error A
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (9)
- Volvo C30 (2007–2013)2008–2009Engine B4184S11, B4184S8, B4204S3 only
- Volvo C30 (2007–2013)2010Engine B4184S11, B4184S8, B4204S3, B4204S4 only
- Volvo C30 (2007–2013)2011–2013Engine B4204S3, B4204S4 only
- Volvo S40 (2004–2013)2008–2009Engine B4184S11, B4184S8, B4204S3 only
- Volvo S40 (2004–2013)2010Engine B4184S11, B4184S8, B4204S3, B4204S4 only
- Volvo S40 (2004–2013)2011–2012Engine B4204S3, B4204S4 only
- Volvo V50 (2004–2013)2008–2009Engine B4184S11, B4184S8, B4204S3 only
- Volvo V50 (2004–2013)2010Engine B4184S11, B4184S8, B4204S3, B4204S4 only
- Volvo V50 (2004–2013)2011–2012Engine B4204S3, B4204S4 only
What does this fault code mean?
The engine control module (ECM) monitors the function of the electric cooling fan. The fault is set when the fan control module reports an internal fault.
Possible causes
- Contact resistance, oxidation or play in the connections
- Open circuit or short to ground in the signal wire
What you can do
- 1Check that the fuses for the electric cooling fan are intact; their position is in the owner's manual or on the fuse box cover
- 2Read the fault code, clear it and test drive to see whether it returns
- 3Check the connectors to the electric cooling fan and its control module for play, contact resistance and oxidation
- 4Check the signal wire to the fan control module for breaks and shorts to ground
- 5If the fan does not show the fault at the moment, it may be intermittent; watch the fan during a test drive
Symptoms you may notice2
- The electric cooling fan runs all the time, even with the ignition off
- The electric cooling fan does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.