Hyundai P074100
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 a 2019–2020 Hyundai Kona in the US, verified evidence links DTC P074100 to Hyundai automatic-transaxle service bulletin procedures. The supplied evidence does not establish a plain-language fault definition, severity, driving safety, charging safety, or a specific failed part.
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 P074100 mean?
For a 2019–2020 Hyundai Kona in the US, verified evidence links DTC P074100 to Hyundai automatic-transaxle service bulletin procedures. The supplied evidence does not establish a plain-language fault definition, severity, driving safety, charging safety, or a specific failed part.
2. Technical explanation
The verified NHTSA-hosted Hyundai communications 19-AT-016H and 20-AT-007H include P074100 among listed DTCs. Their documented procedure includes using Hyundai GDS software under S/W Management > Automatic Transaxle > Oil-pressure Characteristics Input (Solenoid Valve Replacement). Hyundai states this procedure is necessary only for UD, 26, 35R, and OD solenoids. The procedure includes selecting the solenoid type and entering an 8-digit code recorded during the service process. This evidence supports that P074100 is addressed within an automatic-transaxle solenoid replacement/programming procedure; it does not establish which solenoid, if any, has failed for an individual vehicle.
3. What system is affected?
Automatic transaxle, based on the Hyundai bulletin procedure. The supplied evidence does not establish an EV high-voltage, traction-battery, or charging-system fault.
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 bulletins document a solenoid replacement-related GDS procedure but do not establish a specific root cause for P074100.
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 DTC evaluated by a Hyundai-qualified service facility using the applicable Hyundai diagnostic process.
- Do not assume that P074100 identifies a particular failed solenoid based solely on the supplied evidence.
10. Step-by-step troubleshooting
- Verify the stored DTC and vehicle applicability.
- Use Hyundai GDS S/W Management and the Automatic Transaxle Oil-pressure Characteristics Input (Solenoid Valve Replacement) function when applicable to the documented repair.
- For applicable UD, 26, 35R, or OD solenoid replacement procedures, select the solenoid type in GDS and enter the recorded 8-digit code as directed by Hyundai.
- Further diagnostic steps, including component testing criteria, are not established by the supplied verified evidence.
11. When to contact service
Service evaluation is appropriate because the verified Hyundai communications specify manufacturer diagnostic/software-management steps. Whether service is urgent is not yet established by verified evidence.
12. What the service center may check
- Confirm applicability to a US-market 2019–2020 Hyundai Kona.
- Confirm P074100 is present.
- Review Hyundai communications 19-AT-016H and 20-AT-007H.
- If a documented applicable solenoid replacement has been performed, complete the GDS Oil-pressure Characteristics Input procedure for UD, 26, 35R, or OD solenoids as specified by Hyundai.
- Select the solenoid type and enter the recorded 8-digit code in GDS as directed by the bulletin.
13. Possible repair or resolution
- The verified bulletins describe completing GDS Oil-pressure Characteristics Input after applicable UD, 26, 35R, or OD solenoid replacement.
- The supplied evidence does not establish that replacement of any particular component will resolve P074100 in every case.
- One supplied bulletin summary states that if the condition returns again, replace the PCM; however, the supplied excerpt does not provide enough context to establish when that instruction applies to P074100 or to the listed Kona applicability.
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 PDF 10165456: https://static.nhtsa.gov/odi/tsbs/2019/MC-10165456-9999.pdf. It lists P074100 and documents GDS Oil-pressure Characteristics Input for applicable solenoid replacement.
- Hyundai TSB 20-AT-007H, published February 20, 2020, NHTSA Manufacturer Communication PDF 10172225: https://static.nhtsa.gov/odi/tsbs/2020/MC-10172225-0001.pdf. It lists P074100 and documents the same GDS procedure.
16. Recall information
- No recall information was supplied in the verified evidence.
17. Official manufacturer information
Verified official source: NHTSA-hosted Hyundai manufacturer communications 19-AT-016H and 20-AT-007H. Applicability supplied: US-market Hyundai Kona, model years 2019–2020. The two applicability entries overlap for 2019.
19. Frequently asked questions
What does P074100 mean on a Hyundai Kona?
The supplied verified evidence does not establish a plain-language code definition. It establishes that Hyundai includes P074100 in automatic-transaxle bulletin procedures involving solenoid replacement-related GDS programming.
Is P074100 a battery or charging fault?
Not according to the supplied evidence. The documented procedure concerns the automatic transaxle. Charging-system and high-voltage-battery involvement are not established by verified evidence.
Can I drive with P074100?
Not yet established by verified evidence.
Can I charge with P074100?
Not yet established by verified evidence.
What does Hyundai specify after an applicable solenoid replacement?
For UD, 26, 35R, and OD solenoids, Hyundai specifies using GDS Oil-pressure Characteristics Input, selecting the solenoid type, and entering the recorded 8-digit code.