HYUNDAI
25-EV-002H TSB
Manufacturer communications
- Publication date
- 2025-04-12
- Received by NHTSA
- 2025-04-15
- NHTSA record numbers
- 11016997
Manufacturer summary
Original wording in English
Certain 2025MY IONIQ 5 (NEA EV) vehicles may experience a charging issue where a voltage difference between battery cells prevents the High Voltage Battery from fully charging. The two DTCs associated with this issue are:
• P1AA700 – Hybrid/EV Battery Abnormal Performance: Cell Voltage Deviation
• P1AD300 – Hybrid/EV Battery Abnormal Performance: MISD. If either of the DTCs listed above are identified in "Active" status, follow the procedure outlined in this TSB to replace the Battery System Assembly (BSA).
• P1AA700 – Hybrid/EV Battery Abnormal Performance: Cell Voltage Deviation
• P1AD300 – Hybrid/EV Battery Abnormal Performance: MISD. If either of the DTCs listed above are identified in "Active" status, follow the procedure outlined in this TSB to replace the Battery System Assembly (BSA).
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Hyundai
P1AA700Hybrid/EV Battery Abnormal Performance: Cell Voltage DeviationHyundai
P1AD300Hybrid/EV Battery Abnormal Performance: MISDCheck vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Hyundai | IONIQ 5 | 2025 |