VOLVO
ECM-C073 - Control module, communication fault. Signal missing
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
4 modellerC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (6)
- Volvo C30 (2007–2013)2007–2010Kun motor: D4204T
- Volvo C70 (2006–2013)2008–2010Kun motor: D4204T
- Volvo S40 (2004–2013)2004–2006Kun motor: D4204T, D4204T2
- Volvo S40 (2004–2013)2007–2010Kun motor: D4204T
- Volvo V50 (2004–2013)2004–2006Kun motor: D4204T, D4204T2
- Volvo V50 (2004–2013)2007–2010Kun motor: D4204T
Hva betyr feilkoden?
The code indicates that the engine control module is missing a signal from other control modules. It registers a serious disturbance on the high speed side of the CAN network, and then communication with the module is not possible. The engine control module shuts down and only restarts once the power supply is broken and reconnected.
Mulige årsaker
- Contact resistance or oxidation in the connections
- Open circuit in one of the CAN wires
- Short circuit between the CAN wires
- Internal fault in the engine control module
- Internal fault in another control module on the same section of the CAN network
Hva du kan gjøre
- 1Start by reading the fault codes from the CEM and the other affected modules. Do not erase the engine control module code until the others have been fixed
- 2Check that the battery is connected and that the fuses are intact
- 3Check the connectors at the engine control module and the CEM for corrosion, loose contacts and damage
- 4Look for chafing or pinched sections along the CAN wires
- 5If a control module stays in limp-home mode after the ignition is switched off and on, disconnect and reconnect the battery negative terminal
- 6If the fault remains, have a workshop measure the resistance and traffic load of the CAN network with diagnostic equipment
Symptomer du kan merke2
- A warning message or warning symbol appears in the display
- The Check engine warning lamp lights up or behaves abnormally
Hva feilen kan påvirke2
- The engine control module switches itself off (bus-off)
- The engine control module stays off until the power supply is broken, and tries to communicate again when it is powered
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