VOLVO
CEM-B1D1700 - Battery Backed Sounder. General Failure Information. No sub type information
System
Central Electronic Module (CEM)
Volvo models this fault code applies to
Applies to the following models:
9 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The central electronic module (CEM) monitors the alarm siren through control messages. The code is general and does not state what type of fault it is, only that the siren has registered an internal fault.
Possible causes
- Internal fault in the alarm siren control module (SCM)
- Internal fault in the alarm siren (BBS)
What you can do
- 1Read and clear the code and check whether it comes back after the alarm has been armed
- 2Check that the alarm fuse is intact
- 3If you have a diagnostic tool, activate the alarm siren with it and listen for it to sound
- 4Check the connections at the siren for loose or corroded contacts
- 5Have a workshop with diagnostic equipment check the siren and the control module; the fault may be internal
Symptoms you may notice4
- The alarm does not sound, and no visible or audible signal appears
- The alarm function behaves differently from how it should
- The alarm cannot be armed, and no visible indication is shown
- Yellow warning symbol and text message in the display
General guidance for car owners. Diagnosis on the car can point to a different cause.