VOLVO
ECM-442B - Fuel level sensor. Signal missing
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (9)
- Volvo C30 (2007–2013)2007Engine B5254T3 only
- Volvo C30 (2007–2013)2008–2013Engine B5254T7 only
- Volvo C70 (2006–2013)2006–2007Engine B5254T3 only
- Volvo C70 (2006–2013)2008–2013Engine B5254T7 only
- Volvo S40 (2004–2013)2006–2007Engine B5254T3 only
- Volvo S40 (2004–2013)2008Engine B5254T3, B5254T7 only
- Volvo S40 (2004–2013)2009–2012Engine B5254T7 only
- Volvo V50 (2004–2013)2006–2007Engine B5254T3 only
- Volvo V50 (2004–2013)2008–2012Engine B5254T7 only
What does this fault code mean?
The engine control module (ECM) does not receive the fuel level data that the central electronic module (CEM) normally passes on from the fuel level sensor. The fault comes from the ECM being unable to communicate with the CEM, and this code is first set in the CEM.
Possible causes
- Open circuit in one of the CAN wires between the modules
- Short circuit between the CAN wires
- Internal fault in another module on the same part of the CAN network
What you can do
- 1Start by reading the fault codes in the CEM and remedying any faults there
- 2The code in the engine control module cannot be erased until the CEM fault is remedied, so erase it last
- 3With a multimeter you can check that the CAN wires have no break and no contact with each other
- 4If the fault remains, have a workshop check the CAN network, since breaks and shorts need to be measured
Symptoms you may notice1
- Fuel gauge shows an incorrect value, often too low
General guidance for car owners. Diagnosis on the car can point to a different cause.