Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU2002LEGACY GT WAGON AWD F4-2.5L SOHCREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSDTC 43VDC SYSTEM TROUBLE CODE CHARTS FOR WARNING LIGHT CODES
2002 Subaru Legacy GT Wagon AWD F4-2.5L SOHC
Vdc System Trouble Code Charts For Warning Light Codes
2002 Subaru Legacy GT Wagon AWD F4-2.5L SOHCSECTION Vdc System Trouble Code Charts For Warning Light Codes
TROUBLE CODE 43 FAULTY VDCCM - ECM COMMUNICATION LINE
DIAGNOSIS:
- AET communication line is broken or short circuited.
- AEB communication line is broken or short circuited.
- AEC communication line is broken or short circuited.
TROUBLE SYMPTOM:
- VDC does not operate.
WIRING DIAGRAM:
PROCEDURE:
No. 1 - 8
No. 9 - 11
DIAGNOSIS:
- AET communication line is broken or short circuited.
- AEB communication line is broken or short circuited.
- AEC communication line is broken or short circuited.
TROUBLE SYMPTOM:
- VDC does not operate.
WIRING DIAGRAM:
PROCEDURE:
No. 1 - 8
No. 9 - 11
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.