VOLVO
ECM-U040284 - Invalid Data Received from TCM. Bus Signal / Message Failures. Signal below allowable range
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:
10 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (30)
- Volvo S60 (2011–)2011Engine B6304T4, D5204T2 only
- Volvo S60 (2011–)2012Engine B6304T4, D5204T3 only
- Volvo S60 (2011–)2013Engine B5204T8, B5204T9, B5254T12, B5254T14, B6304T4, D5204T3, D5204T7 only
- Volvo S60 (2011–)2014All engines except: B4164T, B4164T2, B4164T3, B4204T7, D4162T, D4204T5, D5244T11, D5244T15
- Volvo S60 (2011–)2015All engines except: B4164T, B4164T2, B4164T3, D4162T, D4204T5, D5244T11, D5244T15, D5244T23
- Volvo S80 (2007–)2011–2012Engine B6304T4, B6324S4, B6324S5 only
- Volvo S80 (2007–)2013Engine B5254T12, B5254T14, B6304T4, B6324S4, B6324S5 only
- Volvo S80 (2007–)2014Engine B4204T11, B4204T12, B4204T15, B5254T12, B5254T14, B6304T4, B6324S4, B6324S5 only
- Volvo S80 (2007–)2015All engines except: B4164T, D4162T, D4204T5, D5204T3, D5244T15
- Volvo V40 (2013–)2013All engines except: B4164T, B4164T3, D4162T
- Volvo V40 (2013–)2014All engines except: B4164T, B4164T3, B4164T4, D4162T
- Volvo V40 (2013–)2015Engine B4204T11, B5204T8, B5204T9, D5204T6 only
- Volvo V40 Cross Country (2013–)2013–2014All engines except: B4164T, D4162T
- Volvo V40 Cross Country (2013–)2015All engines except: B4164T, D4162T, D4204T14
- Volvo V60 (2011–)2011Engine B6304T4, D5204T2 only
- Volvo V60 (2011–)2012Engine B6304T4, D5204T3 only
- Volvo V60 (2011–)2013Engine B5204T8, B5204T9, B6304T4, D5204T3, D5204T7, D82PHEV only
- Volvo V60 (2011–)2014All engines except: B4164T, B4164T2, B4164T3, B4204T7, D4162T, D4204T5, D5244T11, D5244T12, D5244T15, D5244T17
- Volvo V60 (2011–)2015All engines except: B4164T, B4164T2, B4164T3, D4162T, D4204T5, D5244T11, D5244T12, D5244T15, D5244T17, D5244T23
- Volvo V60 Cross Country (2015–)2015
- Volvo V70 (2008–)2011–2012Engine B6304T4, B6324S5 only
- Volvo V70 (2008–)2013Engine B5204T9, B6304T4, B6324S5 only
- Volvo V70 (2008–)2014Engine B4204T11, B5204T9, B6304T4, B6324S5 only
- Volvo V70 (2008–)2015Engine B4204T11, B5204T9, B6304T4 only
- Volvo XC60 (2009–)2011–2013Engine B6304T4, B6324S4, B6324S5 only
- Volvo XC60 (2009–)2014Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9, B6304T4, B6324S4, B6324S5 only
- Volvo XC60 (2009–)2015All engines except: B4204T7, D4204T5, D5204T3, D5204T7, D5244T11, D5244T12, D5244T15, D5244T17, D5244T23
- Volvo XC70 (2008–)2011–2013Engine B6304T4, B6324S4, B6324S5 only
- Volvo XC70 (2008–)2014–2015Engine B4204T11, B6304T4, B6324S4, B6324S5 only
- Volvo XC90 (2003–)2011–2014Engine B6324S5 only
What does this fault code mean?
The engine control module (ECM) receives information from the transmission control module (TCM) over CAN. The code is set when the quality of the data received is too low to be considered reliable. Although the code is titled signal below allowable range, it concerns the quality of the data from the TCM.
Possible causes
- Break in the communication wire
- Communication wire shorted to ground
- Communication wire shorted to supply voltage
- Contact resistance or oxidation in the connections
- Break in the connections or short circuit in the connections
- Fault in the transmission control module (TCM), which should be checked first
What you can do
- 1Check that the fuses are intact
- 2If you have a diagnostic tool: read the status indicators and freeze-frame values to see when the fault occurred
- 3Check the connectors in the wiring between the engine control module and the transmission control module for oxidation and loose contacts
- 4Use a multimeter to check that the communication wire has no break or short to ground or supply voltage
- 5If the fault returns: have a workshop with diagnostic equipment check the transmission control module
Symptoms you may notice3
- Abnormally high fuel consumption
- The cruise control does not engage
- The cruise control does not hold the set speed and disengages
What the fault can affect1
- The cruise control cannot be activated
General guidance for car owners. Diagnosis on the car can point to a different cause.