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Honda U3579

If all of these DTCs are NOT SET as current or history, this bulletin does not apply; cont

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact a Honda dealer or qualified Honda service provider to determine whether bulletin A25-043 applies to the vehicle and its recorded DTC set.
Confidence95%

Quick answer

For a 2024–2025 Honda Prologue in the US, U3579 is listed in Honda service bulletin A25-043 as one of several DTCs that must all be present as current or history for that bulletin to apply. The supplied evidence does not establish a standalone fault meaning for U3579.

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 U3579 mean?

For a 2024–2025 Honda Prologue in the US, U3579 is listed in Honda service bulletin A25-043 as one of several DTCs that must all be present as current or history for that bulletin to apply. The supplied evidence does not establish a standalone fault meaning for U3579.

2. Technical explanation

Verified NHTSA manufacturer communication MC-11019250-0001 (Honda bulletin A25-043, published May 23, 2025) instructs technicians to verify that ALL of these DTCs are set: P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, and U35AF. The bulletin states that if all of these codes are not set as current or history, the bulletin does not apply. The supplied evidence does not provide a component-level definition, failure mechanism, or repair procedure for U3579 alone.

3. What system is affected?

Not yet established by verified evidence.

4. How serious is this code?

Unknown. The supplied evidence does not assign a severity to U3579.

5. Symptoms you may notice

Not yet established by verified evidence.

6. Possible causes

Not yet established by verified evidence. A diagnostic identifier alone is not proof that a specific component has failed.

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 stored current and history DTCs read and documented by a qualified Honda service provider.
  • For bulletin A25-043 applicability, verify whether every required code is present: P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, and U35AF.

10. Step-by-step troubleshooting

  1. Honda bulletin A25-043 requires verification that all listed DTCs are set as current or history.
  2. If all listed DTCs are not set as current or history, bulletin A25-043 does not apply.
  3. Further diagnostic steps are not established by the supplied verified evidence.

11. When to contact service

Contact a Honda dealer or qualified Honda service provider to determine whether bulletin A25-043 applies to the vehicle and its recorded DTC set.

12. What the service center may check

  • Check for current or history DTCs P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, and U35AF.
  • Confirm that all required DTCs are present before applying Honda bulletin A25-043.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Honda A25-043 / NHTSA manufacturer communication MC-11019250-0001, published May 23, 2025: applicable only when all required DTCs are set as current or history.

16. Recall information

No recall relationship is established by verified evidence.

17. Official manufacturer information

Official source: NHTSA Manufacturer Communication PDF 11019250, Honda bulletin A25-043: https://static.nhtsa.gov/odi/tsbs/2025/MC-11019250-0001.pdf

19. Frequently asked questions

What does U3579 mean on a Honda Prologue?

The supplied verified evidence does not establish a standalone technical definition for U3579. It identifies U3579 as one of the DTCs required, along with other listed DTCs, for Honda bulletin A25-043 to apply.

Does Honda bulletin A25-043 apply if only U3579 is present?

No. The bulletin states that all listed DTCs must be set as current or history; if all are not set, the bulletin does not apply.

Which vehicles are covered by the supplied evidence?

The verified applicability record identifies 2024–2025 Honda Prologue vehicles in the US.

20. Sources & verification

Accepted ResearchVerified
Honda U3579: If all of these DTCs are NOT SET as current or history,… | EV Diagnostics