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DTC C2548 Vehicle Dynamics Control Module Abnormal: DTC Detecting Condition

WARNING: This page is about a different car, the 2015 Subaru Outback and 2015 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

When error flag from VDCCM is detected for 2 seconds after the ignition switch is ON.

DIAGNOSTICS PROCEDURE

Step Check Yes No
1 CHECK DTC. 
Using the Subaru Select Monitor, read all DTCs.
Is a DTC related to VDC system (sensors) detected? Perform the diagnosis according to the DTC. <Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .> Go to step 2. 
2 CHECK LAN SYSTEM. 
Perform the diagnosis for LAN system using the Subaru Select Monitor. <Ref. to BASIC DIAGNOSTIC PROCEDURE .>
Is a DTC related to CAN communication detected? Perform the diagnosis according to the DTC. <Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .> Replace the steering gearbox. <Ref. to ELECTRIC POWER STEERING GEARBOX .>