Genesis C1620
Certain 2021-2023MY GV80 (JX1), 2022-2023MY GV70 (JK1), 2021-2023MY G80 (RG3) and 2023MY G80 Electrified (RG3 EV) vehicles may
Quick answer
For applicable 2023 Genesis G80 vehicles in the US, DTC C1620 is covered by Genesis TSB 25-BE-007G, titled “Front Radar Software Update for DTC C1620.”
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does C1620 mean?
For applicable 2023 Genesis G80 vehicles in the US, DTC C1620 is covered by Genesis TSB 25-BE-007G, titled “Front Radar Software Update for DTC C1620.”
2. Technical explanation
Verified evidence identifies C1620 in an official Genesis/NHTSA manufacturer communication as the subject of a front-radar software update. The supplied evidence does not establish the complete fault definition, specific operating effects, or the exact conditions that set the code.
3. What system is affected?
Front radar, based on the title of TSB 25-BE-007G.
4. How serious is this code?
Unknown. The supplied verified evidence does not assign a severity level.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- The official TSB identifies a front-radar software update for DTC C1620.
- A specific underlying cause beyond the need for the software update is not yet established by verified evidence.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Arrange diagnosis with an authorized Genesis service facility.
- Provide the service department with DTC C1620 and ask them to review Genesis TSB 25-BE-007G.
- Do not attempt radar-module software programming yourself.
10. Step-by-step troubleshooting
- Have a qualified Genesis technician confirm the stored DTC and evaluate applicability of TSB 25-BE-007G.
- Not yet established by verified evidence whether additional diagnostic steps are required before the update.
11. When to contact service
Service is appropriate because an official Genesis technical service bulletin describes a front-radar software update for DTC C1620. Ask an authorized Genesis dealer to check the vehicle by VIN and review TSB 25-BE-007G.
12. What the service center may check
- Confirm vehicle identification and TSB applicability.
- Confirm the presence of DTC C1620.
- Review and, where applicable, perform the front-radar software update described in Genesis TSB 25-BE-007G.
13. Possible repair or resolution
- Genesis TSB 25-BE-007G identifies a front-radar software update for DTC C1620.
- Whether the update resolves every occurrence of C1620 is not yet established by the supplied verified evidence.
14. Affected vehicles
- Genesis G80 · 2023 · US
15. Related TSBs / service bulletins
- Genesis TSB 25-BE-007G, April 2025: “Front Radar Software Update for DTC C1620.” The NHTSA-hosted manufacturer communication applies to certain 2021–2023 GV80 (JX1), 2022–2023 GV70 (JK1), 2021–2023 G80 (RG3), and 2023 G80 Electrified (RG3 EV) vehicles, as stated in the supplied source summary.
16. Recall information
- No recall information was supplied or established by verified evidence.
17. Official manufacturer information
Official source: NHTSA Manufacturer Communication PDF 11016993, Genesis TSB 25-BE-007G, published April 8, 2025: https://static.nhtsa.gov/odi/tsbs/2025/MC-11016993-0001.pdf
19. Frequently asked questions
What does Genesis C1620 mean?
The supplied verified evidence does not provide a complete textual definition. It identifies C1620 as the subject of a Genesis front-radar software update bulletin.
Which vehicle is confirmed applicable by the supplied database?
The supplied applicability record confirms a 2023 Genesis G80 in the US. The TSB source summary also lists certain GV80, GV70, G80, and G80 Electrified vehicles, but individual applicability should be verified by VIN.
Is C1620 a recall?
No recall information was supplied or established by verified evidence.