VOLVO
ECM-U007300 - Control module communication bus "A" Off. General Failure Information. No sub type information
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
14 modeliC30 (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–)
Pokaż modele wg rocznika i silnika (24)
- Volvo C30 (2007–2013)2011–2013Tylko silnik: D5204T, D5204T5
- Volvo C70 (2006–2013)2011Tylko silnik: D5204T, D5204T5
- Volvo C70 (2006–2013)2012–2013Wszystkie silniki oprócz: B5254T7
- Volvo S40 (2004–2013)2011–2012Tylko silnik: D5204T, D5204T5
- Volvo S60 (2011–)2011–2012Wszystkie silniki oprócz: B5254T5, D4162T
- Volvo S60 (2011–)2013–2015Wszystkie silniki oprócz: D4162T
- Volvo S80 (2007–)2010Tylko silnik: B4204T6, B6324S, B8444S, D5244T10, D5244T14, D5244T19
- Volvo S80 (2007–)2011Wszystkie silniki oprócz: B4204S3, B4204S4, B5254T10, B5254T11, B5254T8, D4164T
- Volvo S80 (2007–)2012Wszystkie silniki oprócz: B5254T10, D4162T
- Volvo S80 (2007–)2013–2015Wszystkie silniki oprócz: D4162T
- Volvo V40 (2013–)2013–2015Wszystkie silniki oprócz: D4162T
- Volvo V40 Cross Country (2013–)2013–2015Wszystkie silniki oprócz: D4162T
- Volvo V50 (2004–2013)2011–2012Tylko silnik: D5204T, D5204T5
- Volvo V60 (2011–)2011–2015Wszystkie silniki oprócz: D4162T
- Volvo V60 Cross Country (2015–)2015
- Volvo V70 (2008–)2010Tylko silnik: B4204T6, B6324S, D5244T10, D5244T14, D5244T19
- Volvo V70 (2008–)2011Wszystkie silniki oprócz: B4204S3, B4204S4, B5254T10, B5254T11, D4164T
- Volvo V70 (2008–)2012Wszystkie silniki oprócz: B5254T10, D4162T
- Volvo V70 (2008–)2013–2015Wszystkie silniki oprócz: D4162T
- Volvo XC60 (2009–)2010Wszystkie silniki oprócz: B6304T2, B6324S2
- Volvo XC60 (2009–)2011–2015
- Volvo XC70 (2008–)2010Wszystkie silniki oprócz: B6304T2, B6324S2
- Volvo XC70 (2008–)2011–2015
- Volvo XC90 (2003–)2011–2014Tylko silnik: B6324S5
Co oznacza ten kod błędu?
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.
Możliwe przyczyny
- 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
Co możesz zrobić
- 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
Objawy, które możesz zauważyć5
- 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
Na co może wpływać usterka3
- 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
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.