VOLVO
PSM-B1B8813 - Seat Slide Motor Relay. General Electrical Failures. Circuit open
System
Power Seat Module (PSM)
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 fault code means motor 1, which controls the front-rear adjustment of the seat, does not move although it is activated. This is caused by an open circuit in signal cable M1+, and front-rear seat adjustment then does not work.
Possible causes
- Open circuit in signal cable M1+
What you can do
- 1Check that the seat fuses are intact.
- 2Check that the connector to motor 1 is firmly seated and free from corrosion.
- 3Use a multimeter to check that wire M1+ has no open circuit.
- 4If you have a diagnostic tool: activate motor 1 and listen for it to start.
- 5If the fault remains, have a workshop check the wiring and the control module.
Symptoms you may notice2
- Front-rear adjustment does not work
- Front seat electric adjustment and folding do not work
General guidance for car owners. Diagnosis on the car can point to a different cause.