VOLVO
ECM-U012248 - Lost Communication With Vehicle Dynamics Control Module. System Internal Failures. Supervision software failure
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?
The brake control module (BCM) compares the speed of the driven wheels with the vehicle speed and, when slip is detected, requests increased torque from the engine over CAN. The code is set when the engine control module finds that this request is unreasonable in duration or size. Although the code is titled lost communication with the vehicle dynamics control module, it concerns the request for extra wheel torque from the brake control module.
Possible causes
- Fault in the brake control module (BCM)
- Fault in the monitoring software in the brake control module
What you can do
- 1Check whether the brake control module has stored its own codes and fix them first, as this code is then a follow-on fault
- 2Check whether other CAN-related codes sit in the engine control module and fix them first
- 3Check the CAN connectors at the engine control module and the brake control module for loose or corroded connections
- 4Look for chafed or pinched CAN wires. Use a multimeter to check that they have no break or short to ground or supply voltage
- 5Clear the code after repair and road test. If the fault is intermittent, check that the code is not set again
- 6Do not work on the braking system yourself. If the fault returns: have a workshop with diagnostic equipment check the brake control module
Symptoms you may notice1
- Warning symbol and text message in the display
General guidance for car owners. Diagnosis on the car can point to a different cause.