Acura U357D
If all of these DTCs are NOT SET as current or history this bulletin does not apply; continue with norma
Quick answer
For a 2024 Acura ZDX in the U.S., U357D is listed in Acura service bulletin B25-025 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 definition, symptom, cause, driveability status, charging status, or repair for U357D alone.
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 U357D mean?
For a 2024 Acura ZDX in the U.S., U357D is listed in Acura service bulletin B25-025 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 definition, symptom, cause, driveability status, charging status, or repair for U357D alone.
2. Technical explanation
NHTSA manufacturer communication 11019256 (Acura bulletin B25-025, 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, U357F, U3580, and U35AF. The bulletin states that if all of these DTCs are not set as current or history, the bulletin does not apply and normal diagnosis should continue. The supplied verified evidence does not provide the remaining bulletin diagnosis or repair procedure.
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 level to U357D.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence.
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 a qualified Acura service provider retrieve and document current and history DTCs.
- For bulletin B25-025 applicability, verify whether every listed DTC is present as current or history.
- If the complete DTC set is not present, the bulletin directs normal diagnosis to continue.
10. Step-by-step troubleshooting
- Verify whether P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, and U35AF are all set as current or history.
- Do not treat U357D alone as confirmation that bulletin B25-025 applies.
- If any required DTC is absent, continue normal diagnosis as directed by the bulletin.
11. When to contact service
Contact an Acura dealer or qualified service provider for diagnosis, especially if U357D appears with the complete DTC set specified in bulletin B25-025.
12. What the service center may check
- Retrieve current and history DTCs.
- Confirm whether the full B25-025 DTC group is present.
- Proceed under bulletin B25-025 only when all listed DTCs are present as current or history.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Acura ZDX · 2024 · US
15. Related TSBs / service bulletins
- Acura bulletin B25-025 / NHTSA Manufacturer Communication PDF 11019256, published May 23, 2025. It applies only when all specified DTCs, including U357D, are set as current or history.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified source: NHTSA Manufacturer Communication PDF 11019256, Acura bulletin B25-025, published May 23, 2025: https://static.nhtsa.gov/odi/tsbs/2025/MC-11019256-0001.pdf
19. Frequently asked questions
Does U357D by itself make Acura bulletin B25-025 applicable?
No. The bulletin requires all listed DTCs to be set as current or history; U357D alone is not sufficient.
Which vehicle is supported by the supplied applicability evidence?
2024 Acura ZDX vehicles in the United States.
What should happen if the complete DTC group is not present?
The bulletin states that it does not apply and normal diagnosis should continue.