Hyundai P074300
19-AT-016H Page 9 of 9 29. Select the type of solenoid from the drop-down menu. Select OK. 30. Input the 8-digit code recorded in Step 16 in the blank spaces in the GDS. Select OK
Quick answer
For Hyundai Kona vehicles listed below, verified Hyundai/NHTSA service communications include DTC P074300 in an automatic-transaxle solenoid service procedure. The supplied evidence does not establish a plain-language fault definition for P074300.
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 P074300 mean?
For Hyundai Kona vehicles listed below, verified Hyundai/NHTSA service communications include DTC P074300 in an automatic-transaxle solenoid service procedure. The supplied evidence does not establish a plain-language fault definition for P074300.
2. Technical explanation
The verified communications identify P074300 among DTCs covered by Hyundai TSBs 19-AT-016H and 20-AT-007H. After replacement of certain solenoids—UD, 26, 35R, or OD—the procedure directs a technician using Hyundai GDS to run “Oil-pressure Characteristics Input (Solenoid Valve Replacement),” select the solenoid type, and enter the recorded 8-digit code twice to confirm completion. This evidence establishes a required configuration/input procedure in that repair context; it does not establish that every P074300 event requires solenoid replacement.
3. What system is affected?
Automatic transaxle; the communications specifically reference solenoid valves and oil-pressure characteristics input.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence. The supplied communications associate the code with an automatic-transaxle solenoid service procedure but do not provide a verified root-cause list.
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 by a Hyundai-qualified service provider with access to GDS diagnostic equipment.
- Provide the stored DTC and applicable Hyundai service communication information to the service provider.
10. Step-by-step troubleshooting
- Verified service information directs use of GDS S/W Management and the Automatic Transaxle “Oil-pressure Characteristics Input (Solenoid Valve Replacement)” function when applicable after replacement of a UD, 26, 35R, or OD solenoid.
- The procedure includes selecting the solenoid type and entering the recorded 8-digit code twice, then confirming completion.
- Further diagnostic steps, fault isolation, and component replacement criteria are not established by the supplied verified evidence.
11. When to contact service
Contact a Hyundai dealer or qualified Hyundai service provider. The supplied procedure requires Hyundai GDS diagnostic-tool operations.
12. What the service center may check
- Confirm vehicle applicability and the presence of DTC P074300.
- If an applicable UD, 26, 35R, or OD solenoid has been replaced, perform the GDS Oil-pressure Characteristics Input procedure described in the applicable communication.
- Confirm the correct solenoid selection and 8-digit code entry through GDS.
13. Possible repair or resolution
- For the specified solenoid-replacement context, complete the GDS Oil-pressure Characteristics Input procedure and confirm completion. Whether any component repair or replacement is needed for a particular vehicle is not established by the supplied evidence.
14. Affected vehicles
- Hyundai Kona · 2019–2020 · US
- Hyundai Kona · 2019 · US
15. Related TSBs / service bulletins
- Hyundai TSB 19-AT-016H, published August 12, 2019; NHTSA Manufacturer Communication MC-10165456. It lists P074300 and specifies GDS oil-pressure-characteristics input following applicable solenoid replacement.
- Hyundai TSB 20-AT-007H, published February 20, 2020; NHTSA Manufacturer Communication MC-10172225. It lists P074300 and specifies GDS oil-pressure-characteristics input following applicable solenoid replacement.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official NHTSA-hosted communications: https://static.nhtsa.gov/odi/tsbs/2019/MC-10165456-9999.pdf and https://static.nhtsa.gov/odi/tsbs/2020/MC-10172225-0001.pdf
19. Frequently asked questions
What does P074300 mean on the listed Hyundai Kona vehicles?
Not yet established by verified evidence. The supplied communications list the code in an automatic-transaxle solenoid service procedure but do not state a plain-language DTC definition.
Is P074300 covered by a Hyundai service bulletin?
Yes. The supplied evidence lists P074300 in Hyundai TSBs 19-AT-016H and 20-AT-007H.
Does the bulletin require programming after solenoid replacement?
For replacement of a UD, 26, 35R, or OD solenoid, the verified procedure requires GDS Oil-pressure Characteristics Input, including solenoid selection and entry of the recorded 8-digit code twice.
Can I continue driving or charging?
Not yet established by verified evidence.