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Hyundai C2400

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 c

DriveUnknown. The verified record does not establish whether the vehicle can be driven with C2400.
ChargeUnknown. The verified record does not establish any charging impact from C2400.
ServiceService evaluation is appropriate because Hyundai’s documented repair path for a returning C2400 includes replacement of the MDPS motor or Power Pack Assy. Whether service is immediately required is not established by the verified record.
Confidence95%

Quick answer

Hyundai DTC C2400 is identified in Hyundai C-MDPS repair-flowchart communications as a motor signal error. The documented procedure says that if C2400 returns, replace the MDPS motor (or Power Pack Assy).

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 C2400 mean?

Hyundai DTC C2400 is identified in Hyundai C-MDPS repair-flowchart communications as a motor signal error. The documented procedure says that if C2400 returns, replace the MDPS motor (or Power Pack Assy).

2. Technical explanation

The supplied Hyundai manufacturer communications list C2400 under motor-related C-MDPS DTCs and describe it as “Motor signal error.” Earlier Hyundai flowchart evidence states: “If DTC returns, replace MDPS motor (or Power Pack Assy).” Later flowchart evidence groups C2400 as motor-related and directs replacement of the C-MDPS motor. The provided evidence does not establish a complete diagnostic sequence before replacement for C2400 beyond the stated return-of-DTC instruction.

3. What system is affected?

C-MDPS (motor-driven power steering) / MDPS motor or Power Pack Assy, as identified by the supplied Hyundai service communications.

4. How serious is this code?

Unknown. The verified record does not assign a severity level.

5. Symptoms you may notice

  • A warning lamp illuminated with DTC(s) present is referenced generally in the Hyundai C-MDPS flowchart. Specific driver-observable symptoms for C2400 are not yet established by verified evidence.

6. Possible causes

  • Hyundai identifies C2400 as a motor signal error.
  • The supplied evidence identifies the MDPS motor or Power Pack Assy as the documented replacement target if the DTC returns.
  • No further root causes are established by the supplied verified evidence.

7. Can I still drive the vehicle?

Unknown. The verified record does not establish whether the vehicle can be driven with C2400.

8. Can I charge the vehicle?

Unknown. The verified record does not establish any charging impact from C2400.

9. What you can safely do

  • Arrange diagnosis by a Hyundai-qualified service facility.
  • Provide the technician with the stored DTC and any related C-MDPS warning-lamp information.
  • Do not attempt component replacement or electrical repair based solely on this page.

10. Step-by-step troubleshooting

  1. Use Hyundai’s applicable C-MDPS DTC repair flowchart.
  2. Confirm whether C2400 returns after the service procedure specified by Hyundai.
  3. For a returning C2400, the supplied Hyundai communications direct replacement of the MDPS motor or Power Pack Assy, depending on applicability.

11. When to contact service

Service evaluation is appropriate because Hyundai’s documented repair path for a returning C2400 includes replacement of the MDPS motor or Power Pack Assy. Whether service is immediately required is not established by the verified record.

12. What the service center may check

  • Retrieve and document C-MDPS DTCs.
  • Follow the applicable Hyundai C-MDPS diagnostic repair flowchart.
  • Confirm whether C2400 returns.
  • If C2400 returns, follow the Hyundai-directed replacement path for the MDPS motor or Power Pack Assy.
  • Determine whether the vehicle uses the applicable motor or Power Pack Assy configuration.

13. Possible repair or resolution

  • For C2400, Hyundai’s 2020 communications state: if the DTC returns, replace the MDPS motor or Power Pack Assy.
  • Hyundai’s 2022 and 2023 C-MDPS flowchart communications classify C2400 as motor-related and direct replacement of the C-MDPS motor.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Hyundai service communication 20-ST-001H-1, published August 10, 2020; NHTSA manufacturer communication MC-10179244-0001. It identifies C2400 as “Motor signal error” and states that if the DTC returns, replace the MDPS motor or Power Pack Assy.
  • Hyundai service communication 20-ST-001H-2, published September 9, 2020; NHTSA manufacturer communication MC-10180981-0001. It identifies C2400 as “Motor signal error” and states that if the DTC returns, replace the MDPS motor or Power Pack Assy.
  • Hyundai service communication 22-ST-001H, published January 6, 2022; NHTSA manufacturer communication MC-10207815-0001. It lists C2400 as motor-related in the C-MDPS DTC repair flowchart and directs replacement of the C-MDPS motor.
  • Hyundai service communication 23-ST-003H, published April 10, 2023; NHTSA manufacturer communication MC-10235349-0001. It lists C2400 as motor-related in the C-MDPS DTC repair flowchart and directs replacement of the C-MDPS motor.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified official-source evidence is available through NHTSA-hosted Hyundai manufacturer communications: https://static.nhtsa.gov/odi/tsbs/2023/MC-10235349-0001.pdf ; https://static.nhtsa.gov/odi/tsbs/2022/MC-10207815-0001.pdf ; https://static.nhtsa.gov/odi/tsbs/2020/MC-10180981-0001.pdf ; https://static.nhtsa.gov/odi/tsbs/2020/MC-10179244-0001.pdf

19. Frequently asked questions

What does Hyundai C2400 mean?

The supplied Hyundai communications identify C2400 as a C-MDPS “Motor signal error.”

What does Hyundai specify if C2400 returns?

The supplied 2020 Hyundai communications state to replace the MDPS motor or Power Pack Assy if C2400 returns. Later supplied flowcharts classify C2400 as motor-related and direct replacement of the C-MDPS motor.

Is C2400 safe to drive with?

Not yet established by verified evidence.

Does C2400 affect EV charging?

Not yet established by verified evidence.

Which vehicles are listed in the supplied applicability data?

US-market Hyundai Kona model years 2016–2021 and Hyundai Sonata model years 2016–2021 are listed. The supplied data includes overlapping year ranges and does not establish exact trim, powertrain, or bulletin-by-bulletin applicability.

20. Sources & verification

Verified
Hyundai C2400: MDPS ECU (or Power Pack Assy). If DTC returns, replace… | EV Diagnostics