VOLVO
ECM-U014002 - Lost Communication With Central electronic module. General Failure Information. General signal failure
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
6 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–)
Show models by year and engine (6)
What does this fault code mean?
The engine control module (ECM) continuously receives the information it needs from the central electronics control module (CEM). The code is set when communication with the CEM stops. The fault causes the cruise control to disengage.
Possible causes
- Break or short circuit on the CAN wiring
- Communication wire shorted to ground
- Communication wire shorted to supply voltage
- Contact resistance or oxidation in the connections
- Short circuit in the connections
- The engine control module is not intended for this car, for example a used module with different software or hardware
What you can do
- 1Look for the cause in the central electronics control module first, and read the codes there
- 2Check that the fuses are intact and that the earth connections to the engine control module are tight
- 3Check the CAN network connectors for contact resistance, oxidation and short circuits in the connections
- 4Look for chafed wiring. Use a multimeter to check that the communication wire is not shorted to ground or supply voltage
- 5If the engine control module has been replaced: check that it is intended for this exact car
- 6If the fault returns: have a workshop with diagnostic equipment check the communication with the central electronics control module
Symptoms you may notice1
- The cruise control does not engage
What the fault can affect1
- The cruise control is switched off while the fault remains
General guidance for car owners. Diagnosis on the car can point to a different cause.