VOLVO
CEM-4A31 - Ejector sensor. Faulty signal
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
5 modellerS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Hva betyr feilkoden?
The sensor on the ejector side reads the fuel level of one tank. The CEM registers that the fuel level has not changed for a long time although the tank holds fuel. The trip computer may then show an empty tank too early, and the fuel gauge may show zero.
Mulige årsaker
- The ejector side sensor is faulty
Hva du kan gjøre
- 1Check that the ground wire to the sensor is tight and clean. Use a multimeter to check that it has no break
- 2The fault shows only when there is a reasonable amount of fuel in the tank, so top up a little if the tank is nearly empty
- 3If the fault remains with an intact ground wire, have a workshop replace the fuel level sensor on the left side, since it sits in the tank
- 4After the work, clear the code and check that the fuel gauge shows the correct level
Symptomer du kan merke2
- The trip computer displays an empty tank too early
- The fuel gauge reads zero although the tank holds fuel
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