Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Honda Clarity Plug-In HybridFACTORY OEM SERVICE PROCEDURE
Can Gateway DTCS
| DTC | Detection Item | Troubleshooting | Advanced Diagnostics | Note |
|---|---|---|---|---|
| U0029-00 | CAN Gateway F-CAN ch A Bus Off | TRS | AD | |
| U0038-00 | CAN Gateway F-CAN ch E Bus Off | TRS | AD | |
| U0047-00 | CAN Gateway F-CAN ch B Bus Off | TRS | AD | |
| U0056-00 | CAN Gateway F-CAN ch C Bus Off | TRS | AD | |
| U0065-00 | CAN Gateway F-CAN ch D Bus Off | TRS | AD | |
| U3000-49 | CAN Gateway Internal Failure | TRS | AD | |
| U3000-51 | CAN Gateway Programming Error | TRS | AD |
NOTE:
The above DTCs are indicated when the CAN gateway system is selected with the HDS.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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