VOLVO
ECM-620D - Engine cooling fan (FC) control module. Signal too low
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (14)
- Volvo S60 (2001–2009)2005–2006Engine B5204T5, B5244T4, B5244T5, B5254T2, B5254T4 only
- Volvo S60 (2001–2009)2007Engine B5204T5, B5244T5, B5254T2, B5254T4 only
- Volvo S60 (2001–2009)2008–2009Engine B5204T5, B5244T5, B5254T2 only
- Volvo S80 (1999–2006)2005–2006Engine B5204T5, B5244T4, B5254T2, B6294S2, B6294T only
- Volvo V70 (2000–2008)2005Engine B5204T5, B5244T4, B5244T5, B5254T2, B5254T4 only
- Volvo V70 (2000–2008)2006–2007Engine B5204T5, B5244T5, B5254T2, B5254T4 only
- Volvo V70 (2000–2008)2008Engine B5254T2 only
- Volvo V70 XC / XC70 (2001–2007)2005All engines except: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Engine B5244T4, B5254T2 only
- Volvo V70 XC / XC70 (2001–2007)2007Engine B5254T2 only
- Volvo XC90 (2003–)2005–2006Engine B5254T2, B6294T only
- Volvo XC90 (2003–)2007–2012Engine B5254T2 only
- Volvo XC90 (2003–)2013–2014Engine B5254T9 only
- Volvo XC90 (2003–)2015
What does this fault code mean?
The engine control module (ECM) has registered an internal fault in the electric cooling fan, and the code is set. The cause may be poor contact, a missing supply voltage to the fan control module, a break or a short to ground in the wiring, or a damaged fan.
Possible causes
- Contact resistance or oxidation in the connectors
- No supply voltage to the cooling fan control module
- Open or short-circuit to ground in the wiring
- Damaged electric cooling fan
What you can do
- 1Check that the fan blade is not blocked and turns easily with the ignition off
- 2With a diagnostic tool: activate the cooling fan's speed steps with the ignition on and see which ones work
- 3Check the fuse, the supply cable and the ground lead to the cooling fan
- 4Check the connectors between the engine control module and the fan control module for contact resistance and oxidation
- 5Use a multimeter to check that the cables between the control modules are not broken or short-circuited to ground
Symptoms you may notice1
- The electric cooling fan does not work
What the fault can affect1
- The electric cooling fan is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.