LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2017 >> Crosstrek Base >> Repair and Diagnosis >> Brakes >> Traction Control >> Vehicle Dynamics Control (VDC) System (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC C0045: Incorrect VDC Control Module Specifications
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC C0045: Incorrect VDC Control Module Specifications

DTC detecting condition: 

Different control module specification

Trouble symptom: 

NOTE: When parameter selection for VDCCM is improper, this DTC may be memorized.
Step Check Yes No
1 CHECK VDCCM & H/U IDENTIFICATION SYMBOL. 
Check the identification symbol attached on the H/U. Ref. to SPECIFICATION , General Description.
Is the identification symbol correct? Go to step . Replace the VDCCM & H/U. Ref. to VDC Control Module and Hydraulic Control Unit (VDCCM & H/U) .
2 CHECK PARAMETER SELECTED IN VDCCM. 
Ref. to PARAMETER CHECK , OPERATION, Subaru Select Monitor.
Does the parameter registered in the VDCCM match the relevant vehicle? Go to step . Select and register the correct parameter. Ref. to PARAMETER SELECTION , OPERATION, Subaru Select Monitor.
3 CHECK TCM SPECIFICATION. 
Check the TCM specification.
Is the specification of TCM same as vehicle specification? Go to step . Replace the TCM. Ref. to Transmission Control Module (TCM) .
4 CHECK CVT SYSTEM. 
  1. Start the engine.
  2. Read the DTC of the CVT system. Ref. to Read Diagnostic Trouble Code (DTC) .
Is DTC of CVT system displayed? Perform the diagnosis according to DTC. Ref. to List of Diagnostic Trouble Code (DTC) . Go to step .
5 CHECK ECM SPECIFICATION. 
Check the ECM specification.
Is the specification of ECM same as vehicle specification? Go to step . Replace the ECM. Ref. to Engine Control Module (ECM) .
6 CHECK ENGINE SYSTEM. 
  1. Start the engine.
  2. Read DTC of the engine system. Ref. to Read Diagnostic Trouble Code (DTC) .
Is engine system DTC displayed? Perform the diagnosis according to DTC. Ref. to List of Diagnostic Trouble Code (DTC) . Go to step .
7 CHECK VDCCM & H/U. 
  1. Perform the Clear Memory Mode. Ref. to CLEAR MEMORY MODE .
  2. Perform the Inspection Mode. Ref. to INSPECTION MODE .
  3. Read the DTC. Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) .
Is the same DTC displayed? Replace the VDCCM & H/U. Ref. to VDC Control Module and Hydraulic Control Unit (VDCCM & H/U) . Go to step .
8 CHECK DETECTION OF OTHER DTCS FOR VDC. 
Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) .
Is any other DTC displayed? Perform the diagnosis according to DTC. Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . Currently, it is normal. There may have been a temporary poor contact in the harness and connector or a temporary noise interference.