VOLVO
PSM-0021 - Front-rear adjustment control, M1- Too slow. Intermittent fault
System
Power Seat Module (PSM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
What does this fault code mean?
At some point the power seat module (PSM) saw the switch for moving the seat backwards pressed for longer than allowed. The fault is intermittent, so the switch may have stuck briefly or been held down for a long time.
Possible causes
- The switch for moving the seat backwards is stuck in the pressed position
- Faulty switch panel
- Poor contact or a temporary short in the switch panel connector
What you can do
- 1Check that the switch moves freely and springs back
- 2Check that no object under or beside the seat is pressing on the switch
- 3Clear the code; if it returns, have the switch panel and its connector checked by a workshop
Symptoms you may notice1
- The seat fore/aft adjustment switch does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.