BEV model family
BYD DOLPHIN error codes and diagnostics
Diagnostic coverage for model years 2021–2026. 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 years2021–2026
Verified diagnostics45
Research leads0
Verified Verified BYD DOLPHIN 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.
P1A0000Serious electric leakage · 2021–2026View diagnostic report →P1A0100General electric leakage · 2021–2026View diagnostic report →P1A0200BIC1 working abnormal · 2021–2026View diagnostic report →P1A0300BIC2 working abnormal · 2021–2026View diagnostic report →P1A0400BIC3 working abnormal · 2021–2026View diagnostic report →P1A0500BIC4 working abnormal · 2021–2026View diagnostic report →P1A0600BIC5 working abnormal · 2021–2026View diagnostic report →P1A0700BIC6 working abnormal · 2021–2026View diagnostic report →P1A0800BIC7 working abnormal · 2021–2026View diagnostic report →P1A0900BIC8 working abnormal · 2021–2026View diagnostic report →P1A0C00BIC1 voltage sampling abnormal · 2021–2026View diagnostic report →P1A0D00BIC2 voltage sampling abnormal · 2021–2026View diagnostic report →P1A0E00BIC3 voltage sampling abnormal · 2021–2026View diagnostic report →P1A0F00BIC4 voltage sampling abnormal · 2021–2026View diagnostic report →P1A1000BIC5 voltage sampling abnormal · 2021–2026View diagnostic report →P1A1100BIC6 voltage sampling abnormal · 2021–2026View diagnostic report →P1A1200BIC7 voltage sampling abnormal · 2021–2026View diagnostic report →P1A1300BIC8 voltage sampling abnormal · 2021–2026View diagnostic report →P1A2000BIC1 temperature sampling abnormal · 2021–2026View diagnostic report →P1A2100BIC2 temperature sampling abnormal · 2021–2026View diagnostic report →P1A2200BIC3 temperature sampling abnormal · 2021–2026View diagnostic report →P1A2300BIC4 temperature sampling abnormal · 2021–2026View diagnostic report →P1A2400BIC5 temperature sampling abnormal · 2021–2026View diagnostic report →P1A2500BIC6 temperature sampling abnormal · 2021–2026View diagnostic report →P1A2600BIC7 temperature sampling abnormal · 2021–2026View diagnostic report →P1A2700BIC8 temperature sampling abnormal · 2021–2026View diagnostic report →P1A4100Main contactor sintered · 2021–2026View diagnostic report →P1A4200Negative contactor sintered · 2021–2026View diagnostic report →P1AC400Serious battery imbalance · 2021–2026View diagnostic report →P2B7100Voltage sampling disconnected - serious fault · 2021–2026View diagnostic report →P2B7200Temperature sampling disconnected - general fault · 2021–2026View diagnostic report →P2B7300Temperature sampling disconnected - serious fault · 2021–2026View diagnostic report →P2B9213High-voltage-side driver open circuit · 2021–2026View diagnostic report →P2B9298High-voltage-side driver overtemperature · 2021–2026View diagnostic report →U012187Communication with ABS failed · 2021–2026View diagnostic report →U029787Communication with on-board charger failed · 2021–2026View diagnostic report →U029800Communication between battery management system and DC/DC failed · 2021–2026View diagnostic report →U20B000BIC1 CAN communication timeout · 2021–2026View diagnostic report →U20B100BIC2 CAN communication timeout · 2021–2026View diagnostic report →U20B200BIC3 CAN communication timeout · 2021–2026View diagnostic report →U20B300BIC4 CAN communication timeout · 2021–2026View diagnostic report →U20B400BIC5 CAN communication timeout · 2021–2026View diagnostic report →U20B500BIC6 CAN communication timeout · 2021–2026View diagnostic report →U20B600BIC7 CAN communication timeout · 2021–2026View diagnostic report →U20B700BIC8 CAN communication timeout · 2021–2026View diagnostic report →
About this model coverage
EV Diagnostics separates vehicle catalog data from diagnostic applicability. A code is listed as verified for BYD DOLPHIN 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