VOLVO
CEM-P134613 - Fuel Level Sensor B Circuit. General Electrical Failures. Circuit open
System
Central Electronic Module (CEM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
CEM checks the DC voltage from fuel level sensor B, which sits on the ejector side. The signal wire is broken or the sensor is damaged, so the trip computer may show the tank empty too early and the fuel level is shown wrongly. The fuel level is then set to zero.
Possible causes
- Open circuit on the signal wire from sensor B
- Damaged fuel level sensor
What you can do
- 1Compare the fuel gauge with the trip computer and note whether it shows an empty tank when the tank is not empty
- 2Check the fuel pump and level sensor fuses in the engine bay and the CEM. If one has blown, check its circuit for a short to earth
- 3Use a multimeter to check that the signal wire from sensor B has no break
- 4With a diagnostic tool, read the fuel level value in live data while the tank is filled. A value that does not change points to the sensor
- 5Check the connectors in the wiring to the fuel pump for corrosion, but do not open the fuel system yourself
- 6Replacing the sensor or the fuel pump is a workshop task, since the fuel system is flammable
Symptoms you may notice2
- The trip computer shows the tank as empty too early
- A wrong fuel level is displayed
What the fault can affect1
- The fuel level is set to zero
General guidance for car owners. Diagnosis on the car can point to a different cause.