BYD Seal U DM-i PHEV
Last reviewed 2026-08-31
BYD · PHEV · 2024–
Highest-volume Chinese PHEV in Europe in 2025 (Dataforce/Automotive News: on the order of 70k units). BYD DM-i: petrol engine + large traction pack. OBD is BYD manufacturer/UDS, not a Toyota-style PID CSV. Do not confuse with Seal (BEV saloon), Atto 3, Dolphin, or Sealion 7 (BEV). ICE Mode 01 may appear when the engine runs; pack PIDs are not mapped here.
Examples: Seal U DM-i / Seal U Plug-in Hybrid EU (not the BEV Seal saloon)
Known signals
| Signal | Availability | Confidence | Request |
|---|---|---|---|
| Engine RPM | confirmed | 80 | Engine speed |
| Vehicle speed | confirmed | 80 | Vehicle speed |
| Engine coolant temperature | confirmed | 80 | Engine coolant temperature |
| HV battery state of charge | reported | 35 | not mapped |
| HV pack voltage | reported | 35 | not mapped |
| HV pack current | reported | 35 | not mapped |
| HV pack temperature | reported | 35 | not mapped |
| On-board charger voltage | unknown | 20 | not mapped |
| On-board charger current | unknown | 20 | not mapped |
Sources
Provenance for this page. Official standards outrank community notes. See the confidence policy.
Official standard · high trust
SAE J1979 / ISO 15031-5 Mode 01 PID formulas (public index)
ICE Mode 01 0C/0D/05 via public J1979 index. HV/charger PIDs omitted until a named source is reviewed.