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 & EQUIPMENTENTERTAINMENT SYSTEMSAUDIO/VIDEO/NAVIGATION SYSTEM DIAGNOSIS
2020 Genesis G90 3.3T Premium, AWD
Audio/Video/Navigation System Diagnosis
2020 Genesis G90 3.3T Premium, AWDSECTION Audio/Video/Navigation System Diagnosis
- DTC Index
- DTC B2801-00: MM CAN Signal Line Error
- DTC B2803-00: Timeout Multimedia CAN Message (AMP)
- DTC B2817-00: I-CAN Bus Off Error
- DTC B2824-00: FRT MIC Connection Error
- DTC B2827-00: GPS Antenna Open State
- DTC B2841-00: USB Communication Error
- DTC B2849-00: SXM Antenna Open State
- DTC B284F-00: DAB Antenna Open State
- DTC B2851-00: DMB Antenna Open State
- DTC B2856-00: Room Mirror Button Stuck Error
- DTC B2861-00: LVDS Front Cable Fault
- DTC B2862-00: LVDS Rear Right Cable Fault
- DTC B2863-00: LVDS Rear Left Cable Fault
- DTC B28B2-00: MIC In1 In Open Load
- DTC B28B5-00: MIC In2 In Open Load
- DTC B28B8-00: MIC In3 In Open Load
- DTC B28C3-00: FM2 Radio Antenna No Connection State (Sub Ant)
- DTC B28C7-00: LTE1/3G Antenna Open Load
- DTC B28CA-00: LTE2 Antenna Open Load
- DTC B2949-00: Radio Antenna Connection And Receive Quality
- DTC B2954-00: Rear USB Communication Error
- DTC B2955-00: Timeout Multimedia CAN Message (Cluster)
- DTC B2956-00: Timeout Multimedia CAN Message (HUD)
- DTC B2957-00: Timeout Multimedia CAN Message (Clock)
- DTC B2958-00: Timeout Multimedia CAN Message (CGW)
- DTC B29C3-00: Sticking Key On Central Control Panel HU Detection
- DTC B29C6-00: RRC Button Stuck Error
- DTC B29D0-00: CCP Connection Error
- DTC B29D1-00: RRC Connection Error
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.