Honda U3000
49 (Internal Failure of the SRS Unit) to be stored. If you can duplicate the DTC, the troubleshooting will take you through the step-by-ste
Quick answer
For a 2021 Honda Clarity in the US, verified Honda service information identifies U3000-49 as “Internal Failure of the SRS Unit.” Honda states that several possible causes exist and that, when the DTC can be duplicated, its troubleshooting procedure provides step-by-step diagnosis.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
Watch Videos
Relevant videos play here without leaving this diagnostic page.
Videos are supporting material and never override OEM or regulator evidence.
1. What does U3000 mean?
For a 2021 Honda Clarity in the US, verified Honda service information identifies U3000-49 as “Internal Failure of the SRS Unit.” Honda states that several possible causes exist and that, when the DTC can be duplicated, its troubleshooting procedure provides step-by-step diagnosis.
2. Technical explanation
U3000-49 is documented in the supplied Honda/NHTSA manufacturer communications as an SRS-related DTC for an internal failure of the SRS unit. The supplied evidence does not identify the individual causes, diagnostic steps, required parts, or final repair.
3. What system is affected?
Supplemental Restraint System (SRS) unit.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- A stored SRS DTC U3000-49 is established by the verified service communication.
- Other symptoms are not yet established by verified evidence.
6. Possible causes
- Honda states that several possible causes may store SRS DTC U3000-49.
- The individual possible causes are not provided in the supplied 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 the vehicle assessed using the applicable Honda troubleshooting procedure if U3000-49 can be duplicated.
- Do not attempt high-voltage or SRS-component repair based on the supplied evidence.
10. Step-by-step troubleshooting
- Verify whether SRS DTC U3000-49 can be duplicated.
- Honda states that, if the DTC can be duplicated, its troubleshooting takes the technician through step-by-step diagnosis.
- The specific diagnostic steps are not included in the supplied verified evidence.
11. When to contact service
Contact a Honda dealer or qualified service provider for diagnosis using the applicable Honda procedure, particularly if the DTC can be duplicated.
12. What the service center may check
- Confirm the presence and repeatability of SRS DTC U3000-49.
- Follow the applicable Honda step-by-step troubleshooting procedure if the DTC can be duplicated.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Honda Clarity · 2021 · US
15. Related TSBs / service bulletins
- Honda ServiceNews article A21100B, reported by NHTSA as Manufacturer Communication 10206395, published January 4, 2022. It states that several possible causes can store SRS DTC U3000-49 and that duplicateable faults can be diagnosed through a step-by-step troubleshooting process.
- Honda ServiceNews article A21100B, reported by NHTSA as Manufacturer Communication 10206988, published January 29, 2022. It contains the same supplied summary regarding SRS DTC U3000-49.
16. Recall information
- No recall information is provided in the supplied verified evidence.
17. Official manufacturer information
Verified applicability: 2021 Honda Clarity, US. Official NHTSA-hosted manufacturer communication: https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2020-2024.zip#nhtsa_id=10206395
- NHTSA: NHTSA Manufacturer Communication 10206395: A21100B · official_tsb
- NHTSA: NHTSA Manufacturer Communication 10206988: A21100B · official_tsb
19. Frequently asked questions
What does U3000-49 mean on a 2021 Honda Clarity?
The supplied verified Honda service communication identifies it as “Internal Failure of the SRS Unit.”
What causes Honda SRS code U3000-49?
Honda states there are several possible causes, but the supplied evidence does not list them.
Does U3000-49 apply to the 2021 Honda Clarity?
Yes. The supplied applicability record covers the 2021 Honda Clarity in the US.
Can I drive or charge with U3000-49?
Not yet established by verified evidence.