P157216
On-board charger: DC-side voltage low
The on-board charger has measured a voltage on its DC side — the side connected to the traction battery — that is lower than it should be. Charging, and discharging where the vehicle supports it, is stopped until the fault is cleared.
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Severity varies by vehicle — Critical (4): Denza N7 2025, Denza N9, Destroyer 05, Qin Plus; Warning (16): BYD D1 2023, BYD Dolphin 2021, BYD Han EV 2023, BYD Overseas DOLPHIN 2025, BYD Overseas SEAL 2025, BYD Qin L 2024-2025, BYD Seagull 2025, BYD Sealion 07 2024, BYD Song L DM-i 2025, BYD Song L EV 2024, BYD Song Pro DM-i 2022-2023, BYD Yuan PLUS 2023, Denza D9 EV 2023, Denza D9 EV 2024, Denza N7 2023, Denza N7 2024.
What are the symptoms of P157216?
- Cannot charge or discharge
- Instrument cluster asks you to check the on-board charging system
What causes P157216?
Ordered by how many BYD-group vehicles list each cause for this code — not by how likely it is on your car.
- Wiring or connector fault — listed on 54 vehicles
- Internal fault in the on-board charger or vehicle power unit — listed on 49 vehicles
- High-voltage fuse on the DC side — listed on 47 vehicles
- Traction battery pack fault — listed on 31 vehicles
Where do I start with P157216?
Check the on-board charger DTCs
The full procedure for your vehicle
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- Every BYD-group fault code, no limit
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Worth knowing
- BYD's high-voltage procedure calls for disconnecting the 12 V supply and waiting at least 5 minutes after shutdown before work begins.
Which vehicles does P157216 affect?
- BYD D1 2023
- BYD Dolphin 2021
- BYD Han DM 2023
- BYD Han EV 2022
- BYD Han EV 2023
- BYD Han L DM 2025
- BYD Overseas ATTO3 2025
- BYD Overseas DOLPHIN 2025
- BYD Overseas M6(RHD) eMAX 7 2025
- BYD Overseas SEAL 2025
- BYD Overseas SEALION 07 2025
- BYD Overseas Song Plus 2024
- BYD Qin L 2024-2025
- BYD Seagull 2025
- BYD Seal 05 DM-i 2025
- BYD Seal 06 2025
- BYD Seal 2023
- BYD Seal 2025
- BYD Seal DM-i 2024
- BYD Sealion 07 2024
- BYD Sealion 07 2025
- BYD Song L 2024 4668
- BYD Song L DM-i 2025
- BYD Song L EV 2024
- BYD Song PLUS 2021
- BYD Song PLUS 2025
- BYD Song Pro DM-i 2022-2023
- BYD Tang L 2025
- BYD Tang NEV 2021
- BYD Tang NEV 2022
- BYD Tang NEV 2023
- BYD Tang NEV 2023 EV
- BYD Xia 2025-2026
- BYD Yuan PLUS 2023
- BYD Yuan UP 2024
- Denza D9 DM 2022
- Denza D9 DM 2025
- Denza D9 DM-i 2024
- Denza D9 DM-i 4-Seat 2023-2024
- Denza D9 EV 2023
- Denza D9 EV 2024
- Denza D9 EV 2025
- Denza D9 EV RHD 2025
- Denza N7 2023
- Denza N7 2024
- Denza N7 2025
- Denza N8 2023
- Denza N9
- Denza Z9 2025
- Destroyer 05
- Fangchengbao Bao 5 2023
- Fangchengbao Bao 5 2025
- Fangchengbao Bao 8 2025
- Fangchengbao Titanium 3 2025
- Qin Plus
- Yangwang U7 2025
- Yangwang U8 2023
- Yangwang U8 2024
- Yangwang U9 2025
Background reading
Codes related to P157216
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