VOLVO
ECM-431A - Leak diagnostic unit, pump. Faulty signal
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
7 modellerC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2001–2009), S80 (1999–2006), V50 (2004–2013), V70 (2000–2008)
Vis modeller per årsmodell og motor (11)
- Volvo C30 (2007–2013)2007–2011Kun motor: B5244S4
- Volvo C70 (2006–2013)2006–2011Kun motor: B5244S4
- Volvo S40 (2004–2013)2004Kun motor: B5244S4
- Volvo S40 (2004–2013)2005–2010Kun motor: B5244S4, B5244S7
- Volvo S60 (2001–2009)2003–2006Kun motor: B5244S, B5244S6
- Volvo S60 (2001–2009)2007–2009Kun motor: B5244S
- Volvo S80 (1999–2006)2003–2006Kun motor: B5244S
- Volvo V50 (2004–2013)2004Kun motor: B5244S4
- Volvo V50 (2004–2013)2005–2010Kun motor: B5244S4, B5244S7
- Volvo V70 (2000–2008)2003–2006Kun motor: B5244S, B5244S6
- Volvo V70 (2000–2008)2007–2008Kun motor: B5244S
Hva betyr feilkoden?
When testing, the engine control module measures the current through the leak diagnostic pump, and if the current trace looks irregular it reads this as a faulty reference measurement. This can be due to dirt or moisture in the pump, or a damaged pump or a damaged heater element in the pump. The leak diagnosis is cancelled while the fault is present.
Mulige årsaker
- Dirt or moisture in the pump
- Damaged leak diagnostic pump
- Damaged heater element in the pump
- Incorrect control of the heater element, which the central electronic module (CEM) registers as a fault
Hva du kan gjøre
- 1Have a workshop check the engine control module software before the leak is searched for
- 2Check the connector and connections of the leak diagnostic unit for moisture, dirt and oxidation
- 3Have a workshop with diagnostic equipment run a quick test of the fuel tank system to see whether the pump gives a steady reference
- 4If the test gives an uncertain result and the leak code has been stored before, continue troubleshooting even when the test shows no leak
- 5Have a workshop replace the leak diagnostic unit if the fault remains after these checks
Symptomer du kan merke1
- Malfunction indicator lamp (MIL) is on
Hva feilen kan påvirke1
- The leak diagnosis is cancelled
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