BYD diagnostic reference

Explore 9 connection profiles and 485 enhanced definition variants recorded for BYD. Reference relationships describe the library, not road-test coverage.

Vehicle and connection profiles

OBD-II / EOBDBYD
Atto 2 / Atto 3 / Yuan Plus EV / Dolphin / Seal / Seal U / Sealion / M6 / eMax 7 / 海豚 / Denza D9 / Denza N7 / Sealion 7 EV (EU version, only before 2024.10 update)BYD · 2024–2024
BYD Electric Vehicle (EV)BYD
Delphi MT20U (Tiggo, Hover, etc.)BYD · 2012–2012
Delphi MT20U2 (Tiggo, Hover, etc.)BYD · 2012–2012
E6YBYD
Qin Plus DM-iBYD
Seagull EV / Dolphin MiniBYD
Tang DM-pBYD

Enhanced PID meanings

Browse individual signal meanings, units and exact profile links.

Browse BYD enhanced signals

Trouble-code reference families

No manufacturer family is assigned in this catalog snapshot. Generic OBD2 references remain separately available.

Source and applicability

OBD Lens production library legacy-owner-2026-10-09-v81. This is a scoped technical reference, not a scan of your car. A catalog relationship does not certify that every ECU, year or engine returns the same signal or code definition.

Read the reference method

OBD Lens reference library · catalog legacy-owner-2026-10-09-v81. Sources and scope