Diagnostic Trouble Codes (DTCS)

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.

Central electronic module (CEM) 

The central electronic module (CEM) identifies faults related to the central locking system.

Keyless vehicle module (KVM) 

The keyless vehicle module (KVM) identifies faults related to the keyless entry system.

Power Operated Tailgate Module (POT) 

The Power Operated Tailgate Module (POT) identifies faults related to automatic boot lid opening.

Driver door module (DDM) 

The driver door module (DDM) identifies faults related to the central locking system. The control module also stores diagnostic trouble codes (DTCs) for its corresponding rear door control module. The rear door control module is where the driver door module (DDM) stores diagnostic trouble codes (DTCs).

Passenger door module (PDM) 

The Passenger door module (PDM) identifies faults related to the central locking system. The control module also stores diagnostic trouble codes (DTCs) for its corresponding rear door control module. The rear door control module is where the Passenger door module (PDM) stores diagnostic trouble codes (DTCs).