Diagnostic Trouble Codes (DTCs)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.

A diagnostic trouble code (DTC) is stored if a control module detects a fault in a connected component.

If for some reason a fault disappears after the diagnostic trouble code (DTC) has been permanently stored in a control module, information about the fault remains in the control module.

Rear electronic module (REM)

Rear electronic module (REM) can identify 12 different faults associated with the central locking system and can store up to 10 diagnostic trouble codes (DTCs) simultaneously.

Driver door module (DDM)

Driver door module (DDM) can identify 20 different faults associated with the central locking system and can store up to 10 diagnostic trouble codes (DTCs) simultaneously.

Passenger door module (PDM)

Passenger door module (PDM) can identify 20 different faults associated with the central locking system and can store up to 10 diagnostic trouble codes (DTCs) simultaneously.