VOLVO
ECM-4400 - Fuel level sensor. Faulty signal
System
Engine Control Module (ECM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
8 modelsC70 (2006–2013), S40 (2004–2013), S60 (2001–2009), S80 (1999–2006), V50 (2004–2013), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (13)
- Volvo C70 (2006–2013)2006Engine B5254T3 only
- Volvo S40 (2004–2013)2005–2006Engine B5254T3 only
- Volvo S60 (2001–2009)2005–2006Engine B5204T5, B5244T4, B5244T5, B5254T2, B5254T4 only
- Volvo S80 (1999–2006)2005–2006Engine B5204T5, B5244T4, B5254T2, B6294S2, B6294T only
- Volvo V50 (2004–2013)2005–2006Engine B5254T3 only
- Volvo V70 (2000–2008)2005Engine B5204T5, B5244T4, B5244T5, B5254T2, B5254T4 only
- Volvo V70 (2000–2008)2006Engine B5204T5, B5244T5, B5254T2, B5254T4 only
- Volvo V70 XC / XC70 (2001–2007)2005All engines except: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Engine B5244T4, 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 fuel level is reported from the rear electronic module (REM) through the central electronic module (CEM) to the engine control module. The engine compares fuel consumption with how much the level falls, and if the level falls implausibly little the fault code is set. The fault may lie in the fuel level sensor or in either of the two modules.
Possible causes
- Fault in the rear electronic module (REM), which should be troubleshot first
- Damaged fuel level sensor
- Fault in the central electronic module (CEM), which should be troubleshot
What you can do
- 1Have a workshop with diagnostic equipment read the fault codes in the REM and the CEM first, since the fault lies there
- 2Do not clear this code until the root fault has been remedied and its fault code cleared
- 3Check the connector to the fuel level sensor for oxidation and loose fit
- 4Have you got a diagnostic tool: read the fuel level in live data with the ignition on and see whether the value changes when you add fuel
- 5Have a workshop with diagnostic equipment check the fuel level sensor if the fault returns after the root fault has been remedied
Symptoms you may notice1
- Fuel gauge shows a value that is too low
General guidance for car owners. Diagnosis on the car can point to a different cause.