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Hyundai C2401

MDPS ECU (or Power Pack Assy). If DTC returns, replace C-MDPS motor (if applicable). C1623 CAN time out SAS 1. Check C-MDPS power connector and fuse. 2. Check C-MDPS ground line. 3

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceHyundai service is appropriate because the verified repair flow specifies ECU/Power Pack and possible MDPS motor replacement.
Confidence95%

Quick answer

C2401 is identified in Hyundai manufacturer communications as an MDPS motor circuit error. The documented repair flow is to erase the DTC, inspect wiring and connectors between the ECU and motor, replace the C-MDPS ECU (or Power Pack assembly) first, and replace the C-MDPS motor if the DTC returns, where applicable.

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 C2401 mean?

C2401 is identified in Hyundai manufacturer communications as an MDPS motor circuit error. The documented repair flow is to erase the DTC, inspect wiring and connectors between the ECU and motor, replace the C-MDPS ECU (or Power Pack assembly) first, and replace the C-MDPS motor if the DTC returns, where applicable.

2. Technical explanation

The verified Hyundai repair-flow evidence classifies C2401 as “Motor circuit error.” For C2401, Hyundai’s documented sequence is: first erase the DTC; check wiring and connectors between the ECU and motor; replace the C-MDPS ECU (or Power Pack assembly); and, if the DTC returns, replace the C-MDPS motor if applicable. The supplied evidence also places C2401 among R-MDPS power-pack-related DTCs in a 2015–2017 Sonata repair flowchart.

3. What system is affected?

MDPS / C-MDPS steering system, including the ECU or Power Pack assembly and MDPS motor.

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

  • Hyundai identifies C2401 as a motor circuit error.
  • The documented diagnostic flow calls for checking wiring and connectors between the ECU and motor.
  • The documented repair flow identifies the C-MDPS ECU (or Power Pack assembly) and, if the DTC returns, the C-MDPS motor as repair items.

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 qualified Hyundai service provider.
  • Do not attempt component replacement based solely on this code.

10. Step-by-step troubleshooting

  1. Erase the DTC and re-check, as specified in the Hyundai repair flow.
  2. Check wiring and connectors between the ECU and motor, as specified in the Hyundai repair flow.
  3. If the DTC remains, the documented next repair is replacement of the C-MDPS ECU or Power Pack assembly.
  4. If C2401 returns after that repair, replace the C-MDPS motor if applicable.

11. When to contact service

Hyundai service is appropriate because the verified repair flow specifies ECU/Power Pack and possible MDPS motor replacement.

12. What the service center may check

  • Retrieve and confirm C2401.
  • Erase the DTC and re-check.
  • Inspect wiring and connectors between the ECU and motor.
  • Follow the specified C-MDPS ECU or Power Pack replacement step if the DTC remains.
  • If the DTC returns, determine whether C-MDPS motor replacement is applicable.

13. Possible repair or resolution

  • Replace the C-MDPS ECU or Power Pack assembly if required by the documented repair flow.
  • Replace the C-MDPS motor if applicable when C2401 returns after the initial repair step.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Hyundai TSB 20-ST-001H-2, published September 9, 2020: identifies C2401 as a motor circuit error and provides the documented repair sequence. NHTSA manufacturer communication 10180981: https://static.nhtsa.gov/odi/tsbs/2020/MC-10180981-0001.pdf
  • Hyundai TSB 20-ST-001H-1, published August 10, 2020: identifies C2401 as a motor circuit error and provides the documented repair sequence. NHTSA manufacturer communication 10179244: https://static.nhtsa.gov/odi/tsbs/2020/MC-10179244-0001.pdf
  • Hyundai TSB 22-ST-001H, published January 6, 2022: lists C2401 as a power-pack-related R-MDPS DTC in a 2015–2017 Sonata repair flowchart. NHTSA manufacturer communication 10207815: https://static.nhtsa.gov/odi/tsbs/2022/MC-10207815-0001.pdf

16. Recall information

No recall relationship is established by verified evidence.

17. Official manufacturer information

Verified applicability records list US-market Hyundai Kona model years 2016–2021 and Hyundai Sonata model years 2016–2021, with overlapping records for 2016–2020 and 2016–2017 Sonata. Applicability of each individual communication to every listed vehicle is not yet established by the supplied verified evidence.

19. Frequently asked questions

What does Hyundai C2401 mean?

Hyundai manufacturer communications identify C2401 as an MDPS motor circuit error.

What does Hyundai’s documented flow say to inspect for C2401?

It says to erase the DTC and check wiring and connectors between the ECU and motor.

What repair does Hyundai specify if C2401 remains?

The documented flow says to first replace the C-MDPS ECU or Power Pack assembly. If the DTC returns, replace the C-MDPS motor if applicable.

Is it safe to drive with C2401?

Not yet established by verified evidence.

20. Sources & verification

Verified
Hyundai C2401: MDPS ECU (or Power Pack Assy). If DTC returns, replace… | EV Diagnostics