VOLVO
ECM-U000100 - High Speed CAN Communication Bus. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
12 modelsC30 (2007–2013), S40 (2004–2013), S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (38)
- Volvo C30 (2007–2013)2011–2013Engine D4162T only
- Volvo S40 (2004–2013)2011–2012Engine D4162T only
- Volvo S60 (2011–)2011All engines except: D5204T2, D5244T10
- Volvo S60 (2011–)2012All engines except: D5204T3, D5244T11, D5244T15
- Volvo S60 (2011–)2013–2014Engine B4164T, B4164T2, B4164T3, B4204T7, B6304T4, D4162T only
- Volvo S60 (2011–)2015Engine B4164T, B4164T2, B4164T3, B6304T3, B6304T4, B6304T5, D4162T only
- Volvo S80 (2007–)2007–2009
- Volvo S80 (2007–)2010All engines except: B6324S2, B8444S, D5244T10, D5244T14, D5244T19
- Volvo S80 (2007–)2011All engines except: B6324S4, B8444S, D5204T2, D5244T10
- Volvo S80 (2007–)2012All engines except: B6324S4, D5204T3, D5244T11, D5244T15
- Volvo S80 (2007–)2013–2014Engine B4164T, B4164T2, B4204T6, B4204T7, B6304T4, B6324S5, D4162T only
- Volvo S80 (2007–)2015Engine B4164T, B6304T4, B6324S5, D4162T only
- Volvo V40 (2013–)2013Engine B4164T, B4164T3, D4162T only
- Volvo V40 (2013–)2014–2015Engine B4164T, B4164T3, B4164T4, D4162T only
- Volvo V40 Cross Country (2013–)2013–2015Engine B4164T, D4162T only
- Volvo V50 (2004–2013)2011–2012Engine D4162T only
- Volvo V60 (2011–)2011All engines except: D5204T2, D5244T10
- Volvo V60 (2011–)2012All engines except: D5204T3, D5244T11, D5244T15
- Volvo V60 (2011–)2013–2014Engine B4164T, B4164T2, B4164T3, B4204T7, B6304T4, D4162T only
- Volvo V60 (2011–)2015Engine B4164T, B4164T2, B4164T3, B6304T3, B6304T4, B6304T5, D4162T only
- Volvo V70 (2008–)2008–2009
- Volvo V70 (2008–)2010All engines except: B6324S2, D5244T10, D5244T14, D5244T19
- Volvo V70 (2008–)2011All engines except: D5204T2, D5244T10
- Volvo V70 (2008–)2012All engines except: D5204T3, D5244T11, D5244T15
- Volvo V70 (2008–)2013–2014Engine B4164T, B4164T2, B4204T7, B6304T4, B6324S5, D4162T only
- Volvo V70 (2008–)2015Engine B4164T, B4164T2, B6304T4, D4162T only
- Volvo XC60 (2009–)2009
- Volvo XC60 (2009–)2010Engine B4204T6, B6304T2, B6324S only
- Volvo XC60 (2009–)2011–2012Engine B4204T6, B4204T7, B6304T4, B6324S5 only
- Volvo XC60 (2009–)2013–2015Engine B4204T7, B6304T4, B6324S5 only
- Volvo XC70 (2008–)2008–2009
- Volvo XC70 (2008–)2010Engine B6304T2, B6324S only
- Volvo XC70 (2008–)2011–2015Engine B6304T4, B6324S5 only
- Volvo XC90 (2003–)2005–2006Engine B8444S only
- Volvo XC90 (2003–)2007–2010Engine B6324S, B8444S only
- Volvo XC90 (2003–)2011Engine B6324S5, B8444S only
- Volvo XC90 (2003–)2012Engine B6324S5 only
- Volvo XC90 (2003–)2013–2014All engines except: B5254T9
What does this fault code mean?
The engine control module (ECM) communicates with the other control modules over the high speed CAN network. The code is set when the ECM detects a serious disturbance in the CAN communication. The disturbance may come from the wiring, the connectors or another control module on the same network.
Possible causes
- Contact resistance or oxidation in connections and connectors
- Open circuit in one of the CAN wires
- Short circuit between the CAN wires, or to ground or voltage
- Internal fault in the ECM
- Internal fault in another control module on the same part of the CAN network
- Software fault in the control module
What you can do
- 1Read the codes in the other control modules; communication faults in several of them may point to a fault in the network
- 2Check the connectors to the engine control module for contact resistance, looseness and oxidation
- 3Gently move the connectors and the wiring harness with the ignition on, and see whether the code or the fault changes
- 4Use a multimeter to check that the CAN wires have no break and no contact with ground, voltage or each other
- 5Have a workshop read the CAN traffic and judge whether another control module is disturbing the network, since the fault does not always lie in the engine control module
Symptoms you may notice5
- General warning light on
- Cruise control does not work
- The engine jerks on acceleration and sharply after engine braking
- Uneven idling
- Message in the text display
What the fault can affect3
- The engine control module stops communicating on the CAN network and switches itself off
- The engine control module stays off until the voltage supply is broken and switched on again
- Engine torque may be limited
General guidance for car owners. Diagnosis on the car can point to a different cause.