VOLVO
PDM-B12E323 - Front Door Lock Switch - Interior. General Signal Failures. Signal stuck low
System
Passenger Door Module (PDM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS60 (2011–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–)
What does this fault code mean?
The driver and passenger door modules (DDM/PDM) check the signal from the central locking lock button inside the door. If the button has been held in for a long time, or if the signal cable is shorted to ground, the code is set. The module then ignores the signal until a button that is not pressed is detected.
Possible causes
- The button has jammed in the pressed-in position
- The signal cable is shorted to ground
- Moisture and/or oxidation in the connections
- Damaged local lock control
What you can do
- 1Read the code, clear it and check that the button returns when released and does not stick
- 2Check the fuses in the fuse box and make sure they are intact
- 3Check that the button is secure in the door panel and that the connectors behind it are free from moisture and oxidation
- 4Use a multimeter to check that the wire to the button has no contact with ground (the body)
- 5If you have diagnostic equipment, read the button signal in live data and check that it returns to the not-pressed state when released
- 6If the fault remains: have a workshop check the lock control and the door module
Symptoms you may notice3
- Central locking with the button in the door panel does not work
- The interior door lock does not work
- Locking and unlocking with the central locking does not work
What the fault can affect1
- The control module ignores the signal from the button until a button that is not pressed is detected
General guidance for car owners. Diagnosis on the car can point to a different cause.