VOLVO
ECM-1474 - Fan Control Primary Circuit
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 voltage on the signal wire to the fan control module is too low, or when the signal is missing or faulty. The cause can be a short to ground or voltage, or a break in the wire.
Possible causes
- Signal wire between the engine control module (ECM) and the fan control module shorted to ground
- Break in the signal wire between the engine control module (ECM) and the fan control module
- Signal wire between the engine control module (ECM) and the fan control module shorted to voltage
What you can do
- 1Check that the fuses for the electric cooling fan are intact; their position is in the owner's manual
- 2Read the fault code, clear it and test drive to see whether it returns
- 3Check the signal wire between the engine control module and the fan control module for breaks, chafing and shorts to ground or voltage
- 4If you have a diagnostic tool: activate the electric cooling fan with the engine running and check that it starts
- 5If the wiring is fault-free: have a workshop check the fan control module
Symptoms you may notice1
- The engine cools less well and may overheat or run hot
General guidance for car owners. Diagnosis on the car can point to a different cause.