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)QUICK LOOKUPSDTC INDEXBLIND SPOT DETECTION SYSTEM DTCS
2020 Genesis G90 3.3T Premium, AWD
Blind Spot Detection System DTCS
2020 Genesis G90 3.3T Premium, AWDSECTION Blind Spot Detection System DTCS
BLIND SPOT DETECTION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC C1101 | 17: Battery Voltage High |
| DTC C1102 | 16: Battery Voltage Low |
| DTC C121A | 08: Driver Side Indicator Circuit Failure |
| DTC C121B | 08: Driver Side Indicator Sig Fail (LIN Fail) |
| DTC C121C | 87: DDM Timeout |
| DTC C121D | 08: Assistant Side Indicator Circuit Failure |
| DTC C121E | 08: Assistant Side Indicator Signal Failure LIN failure |
| DTC C1283 | 81: Lateral G Sensor Longitudinal G Sensor Yaw Rate Sensor Signal Error |
| DTC C1501 | 01: Switch Failure |
| DTC C150A | 14: Activation Switch Circuit Failure |
| DTC C160A | 88: BSD Local CAN bus off |
| DTC C1612 | 87: CAN Time out TCU |
| DTC C1613 | 81: CAN signal error EMS |
| DTC C1616 | 88: CAN Bus OFF C CAN |
| DTC C1623 | 87: CAN Time out Steering Angle Sensor |
| DTC C1625 | 87: CAN Time out ABS ESC ESP |
| DTC C1628 | 87: CAN Time out Cluster |
| DTC C1633 | 81: CAN Message Failure CLU |
| DTC C1646 | 81: CAN Message Failure - TCU |
| DTC C1657 | 87: CAN Time Out ESC |
| DTC C166A | 87: CAN Time Out Lane Info |
| DTC C1672 | 81: CAN Message Failure - SAS |
| DTC C1687 | 87: CAN Time out VSM2 MDPS |
| DTC C1688 | 81: CAN Message Failure - MDPS |
| DTC C1693 | 81: CAN Message Failure - ESC |
| DTC C1702 | 55: Variant Coding Error |
| DTC C170A | 11: Activation Switch LED Circuit short to ground |
| DTC C170B | 12: Activation Switch LED Circuit short to battery or open |
| DTC C170C | 04: ECU Hardware error REAR RIGHT |
| DTC C170D | 04: ECU Hardware error REAR LEFT |
| DTC C1743 | 42: Software Mis Match |
| DTC C1816 | 87: CAN time out SJB |
| DTC C1817 | 87: CAN Signal Error Gateway |
| DTC C2702 | 54: Control Module Missing Calibration |
| DTC C2703 | 54: Control Module Slave Missing Calibration |
RENDER: 1.0x
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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.