VOLVO
ECM-4420 - 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:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (11)
- Volvo S60 (2001–2009)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)2006Engine B5204T5, B5254T2 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)2006Engine B5244T4, B5254T2 only
- Volvo V70 XC / XC70 (2001–2007)2007Engine B5254T2 only
- Volvo XC90 (2003–)2006–2012Engine B5254T2 only
- Volvo XC90 (2003–)2013–2014Engine B5254T9 only
- Volvo XC90 (2003–)2015
What does this fault code mean?
The engine control module (ECM) compares fuel consumption with how much the fuel level drops over time. The code is set if the level falls implausibly little compared with the calculated consumption. It is a follow-on code, stored first in the central electronic module (CEM), so troubleshooting starts there.
Possible causes
- Fault in the central electronic module (CEM), which reports the wrong fuel level to the ECM
- Fault in the fuel level sensor, which the CEM reads and passes on
What you can do
- 1Read off the fault codes in the central electronic module (CEM) first and remedy them
- 2Once those are remedied, erase the CEM codes, and then this code can be erased
- 3If you have a diagnostic tool: compare the fuel level in live data with the gauge reading while the tank is filled
- 4If the fault remains after CEM troubleshooting, have a workshop check the fuel level sensor
Symptoms you may notice1
- Fuel gauge shows the wrong level or a value that is too low
General guidance for car owners. Diagnosis on the car can point to a different cause.