Acura U357A
If all of these DTCs are NOT SET as current or history this bulletin does not apply
Quick answer
For a 2024 Acura ZDX in the US, U357A is listed in Acura bulletin B25-025 only as one of a required group of DTCs. The bulletin applies only when all listed DTCs are set as current or history; U357A alone does not establish that the bulletin applies.
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 U357A mean?
For a 2024 Acura ZDX in the US, U357A is listed in Acura bulletin B25-025 only as one of a required group of DTCs. The bulletin applies only when all listed DTCs are set as current or history; U357A alone does not establish that the bulletin applies.
2. Technical explanation
Verified evidence identifies U357A as part of the following required DTC group in NHTSA-posted Acura manufacturer communication B25-025: 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. The supplied evidence does not establish a component-level definition or failure mechanism for U357A.
3. What system is affected?
Not yet established by verified evidence.
4. How serious is this code?
Unknown. The supplied verified evidence does not assign a severity level.
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 determine whether every DTC required by bulletin B25-025 is present as current or history.
10. Step-by-step troubleshooting
- Check whether all of these DTCs are set as current or history: P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, and U35AF.
- If all are not set as current or history, bulletin B25-025 does not apply, according to the verified bulletin evidence.
11. When to contact service
Service need is not established by the supplied evidence. If U357A is present, an Acura service provider can verify whether the complete B25-025 DTC criteria are met.
12. What the service center may check
- Verify whether the complete required DTC group is set 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, published in an NHTSA Manufacturer Communication PDF (MC-11019256-0001) on May 23, 2025. It requires all of the following DTCs to be set as current or history for the bulletin to apply: P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, and U35AF.
16. Recall information
No recall relationship is established by verified evidence.
17. Official manufacturer information
NHTSA Manufacturer Communication PDF 11019256, Acura B25-025: https://static.nhtsa.gov/odi/tsbs/2025/MC-11019256-0001.pdf
19. Frequently asked questions
Does U357A by itself mean Acura bulletin B25-025 applies?
No. Verified bulletin evidence says all listed DTCs must be set as current or history. U357A alone does not meet that stated condition.
Which vehicle is supported by the supplied applicability evidence?
2024 Acura ZDX vehicles in the US.
What does U357A specifically mean?
A component-level meaning is not yet established by the supplied verified evidence.