BEV model family
BYD SEALION 7 error codes and diagnostics
Diagnostic coverage for model years 2024–2026. Verified entries below are linked to this model family by source-backed applicability evidence; model membership alone is never used to invent a code relationship.
PowertrainBEV
Model years2024–2026
Verified diagnostics53
Research leads0
Verified Verified BYD SEALION 7 diagnostic codes
Each result opens a manufacturer-specific report with the code meaning, affected vehicles, source evidence and the full diagnostic knowledge page where available.
B121293PTC driver component fault · 2024View diagnostic report →B121393PTC heating component fault · 2024View diagnostic report →B12401DPTC bus overcurrent · 2024View diagnostic report →B12414BDriver-side IGBT overheating (PTC) · 2024View diagnostic report →B12424BPassenger-side IGBT overheating (PTC) · 2024View diagnostic report →B12434BDriver-side PTC core overheating · 2024View diagnostic report →B12444BPassenger-side PTC core overheating · 2024View diagnostic report →B1A1500A2B not connected · 2024View diagnostic report →B1A1600DSP exception · 2024View diagnostic report →B1AB900Invalid key fault · 2024View diagnostic report →B1C1200Left rear door lock fault · 2024View diagnostic report →B1C1600Start button fault · 2024View diagnostic report →B1C1D86Gear signal fault · 2024View diagnostic report →B1C2A00Keyless verification failure · 2024View diagnostic report →B1C2D02Vehicle-speed CAN signal fault · 2024View diagnostic report →B1C2E00Front door lock fault · 2024View diagnostic report →B1CE300Light sensor fault · 2024View diagnostic report →B1CE400Sunlight sensor fault · 2024View diagnostic report →B1CE500Humidity sensor fault · 2024View diagnostic report →B1CE600Rain sensor fault · 2024View diagnostic report →B1CE700Quad-sensor voltage fault · 2024View diagnostic report →B2AB049Electric compressor current sampling circuit fault · 2024View diagnostic report →B2AB149Electric compressor motor phase loss · 2024View diagnostic report →B2AB249Electric compressor IPM/IGBT fault · 2024View diagnostic report →B2AB349Electric compressor internal temperature sensor fault · 2024View diagnostic report →B2AB41DElectric compressor internal overcurrent · 2024View diagnostic report →B2AB573Electric compressor start-up fault · 2024View diagnostic report →B2AB64BElectric compressor internal temperature abnormal · 2024View diagnostic report →B2AB774Electric compressor speed abnormal · 2024View diagnostic report →B2AB81CElectric compressor phase overvoltage · 2024View diagnostic report →B2AB997Electric compressor overload · 2024View diagnostic report →B2ABA1CElectric compressor internal low-voltage power-supply fault · 2024View diagnostic report →B2ABB17Electric compressor high-voltage-side overvoltage · 2024View diagnostic report →B2ABC16Electric compressor high-voltage-side undervoltage · 2024View diagnostic report →B2E7507Wi-Fi/Bluetooth driver loading failure · 2024View diagnostic report →B2E7900USB hub connection failure · 2024View diagnostic report →B2E8B00Instrument display screen abnormal display function · 2024View diagnostic report →B2E8C00Vehicle recorder chip communication fault · 2024View diagnostic report →B2E8D00Security chip abnormal function · 2024View diagnostic report →B2E8E00MCU-SOC SPI buffer overflow · 2024View diagnostic report →B2E8F00SOC startup timeout · 2024View diagnostic report →B2E9100MCU abnormal reboot · 2024View diagnostic report →B2E9200ANC communication abnormal · 2024View diagnostic report →U010087Lost communication with MG/ECM · 2024View diagnostic report →U0192804G chip communication fault · 2024View diagnostic report →U019380Gravity sensor data communication failure · 2024View diagnostic report →U01E487Gyroscope data communication failure · 2024View diagnostic report →U01F387Display communication error · 2024View diagnostic report →U024887SIM card communication fault · 2024View diagnostic report →U024987Network signal failure · 2024View diagnostic report →U024E87Communication with ESC failed · 2024View diagnostic report →U030187Terminal/comfort network communication fault · 2024View diagnostic report →U030387Terminal/power or energy network communication fault · 2024View diagnostic report →
About this model coverage
EV Diagnostics separates vehicle catalog data from diagnostic applicability. A code is listed as verified for BYD SEALION 7 only when supporting evidence connects that diagnostic identity to the model or its documented model-year range.
Related navigation
All BYD EV models and diagnostics · Search all diagnostic codes · How verification works