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 MANUALSGENESIS2020G90 3.3T PREMIUM, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOLLISION/AVOIDANCEBLIND SPOT DETECTION SYSTEM DIAGNOSISDTC C121B-08: DRIVER SIDE INDICATOR SIG FAIL (LIN FAIL)DTC INFORMATIONDTC DETECTING CONDITION
2020 Genesis G90 3.3T Premium, AWD
DTC Information: DTC Detecting Condition
2020 Genesis G90 3.3T Premium, AWDSECTION DTC Detecting Condition
| Item | Detecting Condition | Possible Cause |
|---|---|---|
| DTC Strategy |
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| Enable Conditions |
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| Threshold Value |
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| Detecting Time |
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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.