VOLVO
ECM-U007300 - Control module communication bus "A" Off. General Failure Information. No sub type information
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
14 modellerC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Vis modeller per årsmodell og motor (24)
- Volvo C30 (2007–2013)2011–2013Kun motor: D5204T, D5204T5
- Volvo C70 (2006–2013)2011Kun motor: D5204T, D5204T5
- Volvo C70 (2006–2013)2012–2013Alle motorer unntatt: B5254T7
- Volvo S40 (2004–2013)2011–2012Kun motor: D5204T, D5204T5
- Volvo S60 (2011–)2011–2012Alle motorer unntatt: B5254T5, D4162T
- Volvo S60 (2011–)2013–2015Alle motorer unntatt: D4162T
- Volvo S80 (2007–)2010Kun motor: B4204T6, B6324S, B8444S, D5244T10, D5244T14, D5244T19
- Volvo S80 (2007–)2011Alle motorer unntatt: B4204S3, B4204S4, B5254T10, B5254T11, B5254T8, D4164T
- Volvo S80 (2007–)2012Alle motorer unntatt: B5254T10, D4162T
- Volvo S80 (2007–)2013–2015Alle motorer unntatt: D4162T
- Volvo V40 (2013–)2013–2015Alle motorer unntatt: D4162T
- Volvo V40 Cross Country (2013–)2013–2015Alle motorer unntatt: D4162T
- Volvo V50 (2004–2013)2011–2012Kun motor: D5204T, D5204T5
- Volvo V60 (2011–)2011–2015Alle motorer unntatt: D4162T
- Volvo V60 Cross Country (2015–)2015
- Volvo V70 (2008–)2010Kun motor: B4204T6, B6324S, D5244T10, D5244T14, D5244T19
- Volvo V70 (2008–)2011Alle motorer unntatt: B4204S3, B4204S4, B5254T10, B5254T11, D4164T
- Volvo V70 (2008–)2012Alle motorer unntatt: B5254T10, D4162T
- Volvo V70 (2008–)2013–2015Alle motorer unntatt: D4162T
- Volvo XC60 (2009–)2010Alle motorer unntatt: B6304T2, B6324S2
- Volvo XC60 (2009–)2011–2015
- Volvo XC70 (2008–)2010Alle motorer unntatt: B6304T2, B6324S2
- Volvo XC70 (2008–)2011–2015
- Volvo XC90 (2003–)2011–2014Kun motor: B6324S5
Hva betyr feilkoden?
The code means that the engine control module (ECM) has disconnected itself from the CAN network, which is called bus-off. It is set when the module detects that CAN communication is blocked by a serious disturbance, which may come from the wiring, the connectors or another control module on the network.
Mulige årsaker
- Contact resistance or oxidation in the connectors
- Open circuit in one of the CAN network wires
- One or more CAN wires are shorted to ground, voltage or each other
- Internal fault in the ECM
- Internal fault in another control module on the same part of the CAN network
Hva du kan gjøre
- 1Read the code with a diagnostic tool and check whether it is active or only stored
- 2Look at the codes in the other control modules; if they also show communication faults, the fault is probably in the network
- 3Check the connections on the CAN network at the engine control module for contact resistance and oxidation
- 4If you have a diagnostic tool: clear the codes, drive the car for a while and read whether the communication fault comes back
- 5Tell the workshop if anything has recently been done to the car's electrical system or to a control module, since this may have affected the CAN network
- 6Have a workshop measure the resistance and voltage on the CAN network and find the control module that is disturbing it
Symptomer du kan merke5
- Red warning symbol and text message in the display
- The engine hesitates, surges or jerks on acceleration and after engine braking
- Uneven idling
- Cruise control does not work
- The engine does not start, either sometimes or all the time
Hva feilen kan påvirke3
- Engine torque may be limited
- The engine control module stops communicating on the CAN network and switches itself off
- The engine control module stays off until the voltage supply has been broken, and makes new attempts to communicate when the voltage is connected again
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