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.
Check internal errors of CAN communication units
2017 Hyundai Santa Fe SE, FWDSECTION Check internal errors of CAN communication units
- Connect GDS.
- IG "ON" and engine "OFF".
- Select "DTC Analysis" mode.
- Replace DDM with the new one and check DTC again.
- Is the code erased?
YES
- Substitute with a known - good unit and check for proper operation.
If the problem is corrected, replace the unit and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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.