VOLVO
ECM-U1A1400 - CAN Initialisation Failure. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–)
Show models by year and engine (20)
- Volvo S60 (2011–)2011Engine B4164T, B4164T3, B4204T6, B4204T7 only
- Volvo S60 (2011–)2012–2014Engine B4164T, B4164T2, B4164T3, B4204T7 only
- Volvo S60 (2011–)2015Engine B4164T, B4164T2, B4164T3 only
- Volvo S80 (2007–)2010Engine B4204T6 only
- Volvo S80 (2007–)2011Engine B4164T, B4204T6, B4204T7 only
- Volvo S80 (2007–)2012–2014Engine B4164T, B4164T2, B4204T6, B4204T7 only
- Volvo S80 (2007–)2015Engine B4164T only
- Volvo V40 (2013–)2013Engine B4164T, B4164T3 only
- Volvo V40 (2013–)2014–2015Engine B4164T, B4164T3, B4164T4 only
- Volvo V40 Cross Country (2013–)2013–2015Engine B4164T only
- Volvo V60 (2011–)2011Engine B4164T, B4164T3, B4204T6, B4204T7 only
- Volvo V60 (2011–)2012–2014Engine B4164T, B4164T2, B4164T3, B4204T7 only
- Volvo V60 (2011–)2015Engine B4164T, B4164T2, B4164T3 only
- Volvo V70 (2008–)2010Engine B4204T6 only
- Volvo V70 (2008–)2011Engine B4164T, B4204T6, B4204T7 only
- Volvo V70 (2008–)2012–2014Engine B4164T, B4164T2, B4204T7 only
- Volvo V70 (2008–)2015Engine B4164T, B4164T2 only
- Volvo XC60 (2009–)2010Engine B4204T6 only
- Volvo XC60 (2009–)2011–2012Engine B4204T6, B4204T7 only
- Volvo XC60 (2009–)2013–2015Engine B4204T7 only
What does this fault code mean?
At start-up the engine control module (ECM) initialises its own software and compares its configuration ID with the signal configuration sent by the central electronic module (CEM). The code is set if the initialisation fails, if the configuration IDs do not match, or if communication between the ECM and the CEM has been interrupted.
Possible causes
- Software error in the control module
- Internal fault in the ECM
- An incorrect CAN configuration ID, because the module is not intended for the car, for example a used module with different software or hardware
- Open circuit in the CAN wiring between the ECM and the CEM
What you can do
- 1If a used control module has been fitted or the engine control module has been replaced recently, tell the workshop. The module must be intended for this car.
- 2Read the fault codes in the CEM. The CEM monitors the voltage on the CAN wires and can set its own codes for short-circuits to ground or voltage.
- 3Look for loose, chafed or corroded connectors and wiring between the ECM and the CEM. Gently wiggle them to see whether the fault appears.
- 4Do not replace the CEM for a CAN fault unless a workshop has confirmed an internal fault. Have a workshop check whether the software needs reloading.
Symptoms you may notice2
- The engine does not start, either always or sometimes
- The automatic gearbox gives no forward or reverse movement in the selected gear
General guidance for car owners. Diagnosis on the car can point to a different cause.