VOLVO
PSM-002C - Button combination not permissible, M1+ and M1-. Faulty signal. 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?
The fault is intermittent: the control module has on an earlier occasion received an incorrect signal because M1+ and M1- were activated at the same time. The seat then does not function at all.
Possible causes
- Incorrect handling of the control panel
- Defective control panel
- Defective power seat module (PSM)
What you can do
- 1Check that you have not pressed M1+ and M1- at the same time, and that neither button is stuck.
- 2Check that the control panel is firmly seated and free from corrosion, and look for wiring that may have chafed.
- 3Clear the fault code and see whether it comes back when the controls are used one at a time as usual.
- 4If the fault remains, have a workshop check the control panel and the power seat module (PSM).
Symptoms you may notice1
- The seat does not function at all
General guidance for car owners. Diagnosis on the car can point to a different cause.