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Genesis P0730

2019~ 2019~ 2019~ G70 (IK) G80 (DH) G90 (HI) WARRANTY INFORMATION: Normal Warranty applies SERVICE PROCEDURE: 1. Connect a GDS and check for DTC. Record the DTC and delete the DTC

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact a Genesis service facility for diagnosis if P0730/P073000 is stored, particularly if transmission slipping is present.
Confidence95%

Quick answer

P0730 is identified in the supplied Genesis bulletin as P073000: “Gear 8 incorrect ratio.” The verified bulletin applies to 2019-and-later G70 (IK), G80 (DH), and G90 (HI) vehicles, while the supplied applicability record specifically lists US 2023–2024 G80.

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 P0730 mean?

P0730 is identified in the supplied Genesis bulletin as P073000: “Gear 8 incorrect ratio.” The verified bulletin applies to 2019-and-later G70 (IK), G80 (DH), and G90 (HI) vehicles, while the supplied applicability record specifically lists US 2023–2024 G80.

2. Technical explanation

The NHTSA-hosted Genesis manufacturer communication 19-AT-012G lists P0730/P073000 as “Gear 8 incorrect ratio.” Its evidence summary references slipping of more than 200 rpm while in gear. The documented service procedure begins by connecting a GDS, checking for DTCs, recording them, and deleting them. If solenoid DTCs are present, the bulletin directs technicians to the appropriate TSB or shop manual repair procedure.

3. What system is affected?

Transmission gear-ratio monitoring for 8th gear, as established by the supplied bulletin.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • The supplied evidence references slipping of more than 200 rpm while in gear.
  • Other symptoms are not yet established by verified evidence.

6. Possible causes

  • The supplied bulletin states that, if solenoid DTCs are found, the appropriate TSB or shop manual procedure should be followed.
  • Specific root causes for P0730 are 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

  • Have the vehicle evaluated with Genesis diagnostic equipment (GDS) by a qualified service facility.
  • Record all stored DTCs before they are cleared, consistent with the documented procedure.

10. Step-by-step troubleshooting

  1. Connect a GDS and check for DTCs.
  2. Record the DTCs.
  3. Delete the DTCs.
  4. If solenoid DTCs are found, refer to the appropriate TSB or shop manual and follow its repair procedure.

11. When to contact service

Contact a Genesis service facility for diagnosis if P0730/P073000 is stored, particularly if transmission slipping is present.

12. What the service center may check

  • Check for DTCs using GDS.
  • Record and clear DTCs as described in Genesis communication 19-AT-012G.
  • Determine whether solenoid DTCs are also present.

13. Possible repair or resolution

  • If solenoid DTCs are found, follow the applicable Genesis TSB or shop-manual repair procedure.
  • Any further repair resolution is not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Genesis manufacturer communication 19-AT-012G, published June 4, 2019; NHTSA document MC-10253025-0001. It lists P0730/P073000 as “Gear 8 incorrect ratio” and provides the initial GDS-based diagnostic procedure.

16. Recall information

  • No recall information is established by the supplied verified evidence.

17. Official manufacturer information

Official source: NHTSA-hosted Genesis manufacturer communication 19-AT-012G, https://static.nhtsa.gov/odi/tsbs/2019/MC-10253025-0001.pdf

19. Frequently asked questions

What does Genesis code P0730 mean?

In the supplied Genesis bulletin, P0730/P073000 means “Gear 8 incorrect ratio.”

Which vehicles are listed in the bulletin?

The bulletin lists 2019-and-later G70 (IK), G80 (DH), and G90 (HI). The supplied applicability record specifically identifies US-market 2023–2024 G80 vehicles.

What is the documented first diagnostic step?

Connect a GDS, check for DTCs, record them, and delete them.

Can I keep driving with P0730?

Not yet established by verified evidence.

20. Sources & verification

ReferenceVerified
Genesis P0730: 2019~ 2019~ 2019~ G70 (IK) G80 (DH) G90 (HI) WARRANTY… | EV Diagnostics