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 MANUALSHYUNDAI2011EQUUS SIGNATUREREPAIR AND DIAGNOSISGENERAL INFORMATIONDTC INDEXHEAD LAMP - AUTO HEADLAMP LEVELING SYSTEM DTCS
2011 Hyundai Equus Signature
Head Lamp - Auto Headlamp Leveling System DTCS
2011 Hyundai Equus SignatureSECTION Head Lamp - Auto Headlamp Leveling System DTCS
HEAD LAMP - AUTO HEADLAMP LEVELING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC C1212 | Vehicle Speed Sensor Failure |
| DTC C1255 | Rear Height Sensor |
| DTC C1260 | Steering Angle Sensor-Signal |
| DTC C1522 | Head lamp Switch Fault |
| DTC C1604 | ECU Fault |
| DTC C1606 | ECU Software Error |
| DTC C1620 | First Setup Not Completed |
| DTC C1621 | EXCESSIVE OPERATING TEMP |
| DTC C2226 | Output Voltage Short to Battery or Short to Ground |
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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.