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 MANUALSHYUNDAI2009SONATA SE, 3.3 FREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLESC (ELECTRONIC STABILITY CONTROL) SYSTEMTROUBLESHOOTING FOR DTCC1702 VARIANT CODING ERRORVARIANT CODING
2009 Hyundai Sonata SE, 3.3 F
Variant Coding
2009 Hyundai Sonata SE, 3.3 FSECTION Variant Coding
- Check for improper installation of EMS/TCU/ESP.
- Connect scantool to Data Link Connector (DLC).
- Ignition "ON".
- Go in variant coding (Fig 1).
- Perform variant code. (Press the REST button-figure 2).
- Disconnect scantool.
- Ignition "OFF" and then ignition "ON". Go to "COMPONENT INSPECTION " Procedure.
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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.