VOLVO
ECM-0642 - Power supply 1. Signal too low
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 (10)
- Volvo C30 (2007–2013)2007Kun motor: D4204T
- Volvo C30 (2007–2013)2008–2010Kun motor: D4204T · Kun girkasse: MMT6, MPS6
- Volvo C70 (2006–2013)2008Kun motor: D4204T
- Volvo C70 (2006–2013)2009–2010Kun motor: D4204T · Kun girkasse: MMT6, MPS6
- Volvo S40 (2004–2013)2004–2006Kun motor: D4204T, D4204T2
- Volvo S40 (2004–2013)2007Kun motor: D4204T
- Volvo S40 (2004–2013)2008–2010Kun motor: D4204T · Kun girkasse: MMT6, MPS6
- Volvo V50 (2004–2013)2004–2006Kun motor: D4204T, D4204T2
- Volvo V50 (2004–2013)2007Kun motor: D4204T
- Volvo V50 (2004–2013)2008–2010Kun motor: D4204T · Kun girkasse: MMT6, MPS6
Hva betyr feilkoden?
The supply voltage to all emission-related sensors is too low, and the engine control module sets the code. The cause may be poor connections, or a supply wire shorted to earth. The sensors may then give incorrect signals, which can show up as starting problems or poor driving.
Mulige årsaker
- Contact resistance or oxidation in the connections
- Supply wire short-circuited to earth
Hva du kan gjøre
- 1Check the connectors to the engine control module for contact resistance and oxidation
- 2Inspect the wiring from the engine control module to the sensors for chafing, since a chafed wire can short to earth
- 3With the ignition off, use a multimeter to check that the supply wire has no contact with earth (the body)
- 4If the fault remains after these checks, have a workshop read the sensors and control module with diagnostic equipment and remedy what is found
Symptomer du kan merke3
- The engine starts unreliably or not at all
- The car runs poorly and lacks power
- Yellow warning symbol with text message in the display
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