VOLVO
CEM-B11D212 - Foldable Head Restraint Output. General Electrical Failures. Circuit short to battery
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?
The Central Electronic Module (CEM) controls the foldable rear seat head restraint function. The fault is stored when the signal from the output is too high, which is caused by the signal wire being short-circuited to voltage.
Possible causes
- The signal wire is short-circuited to voltage
What you can do
- 1Check that the fuses are intact
- 2Press the head restraint function button and see whether anything happens, then clear the fault code and try again
- 3Check the wiring to the head restraint for chafing and pinch damage
- 4Disconnect the connector at the head restraint and use a multimeter to check that the signal wire has no contact with the battery positive
- 5If the fault returns, have a workshop with diagnostic equipment check the head restraint and the control module
Symptoms you may notice1
- The foldable head restraint on the rear seat cannot be folded
General guidance for car owners. Diagnosis on the car can point to a different cause.