EV manufacturer
BYD EV diagnostics
Browse in-scope 2021+ battery-electric and plug-in hybrid model families, plus evidence-labelled diagnostic records.
15 model families302 verified
BYD ATTO 3Models
BYD ATTO 2
BEV · 2024–2026
0 verified applicable recordsBYD ATTO 3
BEV · 2022–2026
240 verified applicable recordsBYD DOLPHIN
BEV · 2021–2026
45 verified applicable recordsBYD DOLPHIN SURF
BEV · 2023–2026
0 verified applicable recordsBYD E2
BEV · 2021–2026
0 verified applicable recordsBYD E3
BEV · 2021–2026
0 verified applicable recordsBYD HAN
BEV · 2021–2026
50 verified applicable recordsBYD QIN PLUS EV
BEV · 2021–2026
0 verified applicable recordsBYD SEAL
BEV · 2022–2026
26 verified applicable recordsBYD SEAL U
BEV · 2021–2026
0 verified applicable recordsBYD SEALION 7
BEV · 2024–2026
53 verified applicable recordsBYD SONG L EV
BEV · 2023–2026
0 verified applicable recordsBYD TANG
BEV · 2021–2026
0 verified applicable recordsBYD TANG L EV
BEV · 2025–2026
0 verified applicable recordsBYD e6
BEV · 2021–2026
3 verified applicable recordsVerified Manufacturer-level verified records
These records passed the verified evidence gate. Model applicability is shown only where separately supported.
B121293PTC driver component faultB121393PTC heating component faultB12401DPTC bus overcurrentB12414BDriver-side IGBT overheating (PTC)B12424BPassenger-side IGBT overheating (PTC)B12434BDriver-side PTC core overheatingB12444BPassenger-side PTC core overheatingB16001BDriver frontal airbag not connectedB160111Driver frontal airbag shorted to groundB160212Driver frontal airbag shorted to powerB160A1ADriver frontal airbag resistance equals 0B16101BFront passenger frontal airbag not connectedB161111Front passenger frontal airbag shorted to groundB161212Front passenger frontal airbag shorted to powerB161A1AFront passenger frontal airbag resistance equals 0B169416SRS ECU faultB169517SRS ECU faultB169D00SRS ECU faultB17A300SRS CAN signal abnormalB17A400SRS hardwire signal abnormalB1A1500A2B not connectedB1A1600DSP exceptionB1AB900Invalid key faultB1BE801Front wiper HIGH switch hardwire detection faultB1BF400Front wiper reset signal faultB1C1200Left rear door lock faultB1C1600Start button faultB1C1D86Gear signal faultB1C2A00Keyless verification failureB1C2D02Vehicle-speed CAN signal faultB1C2E00Front door lock faultB1CE300Light sensor faultB1CE400Sunlight sensor faultB1CE500Humidity sensor faultB1CE600Rain sensor faultB1CE700Quad-sensor voltage faultB1E0007Volume-up switch stuckB1E0507Voice switch stuckB1E0707Volume-down switch stuckB1E1007Steering wheel switch EEPROM faultB1E1907Mute switch stuckB1E2000Steering-wheel built-in vibration motor faultB222400Sunroof Hall sensor signal abnormalB225300Sunroof initialization lostB225407Sunroof switch stuckB225511Sunroof motor short to groundB225513Sunroof motor open circuitB227C13Interior front detection antenna open circuitB227D13Interior middle detection antenna open circuitB229D16High-frequency receiver module undersupplyB229D17High-frequency receiver module oversupplyB22A613Exterior right-front detection antenna open circuitB22A813Exterior trunk detection antenna open circuitB2341-00Instrument control module EEPROM errorB2AB049Electric compressor current sampling circuit faultB2AB149Electric compressor motor phase lossB2AB249Electric compressor IPM/IGBT faultB2AB349Electric compressor internal temperature sensor faultB2AB41DElectric compressor internal overcurrentB2AB573Electric compressor start-up faultB2AB64BElectric compressor internal temperature abnormalB2AB774Electric compressor speed abnormalB2AB81CElectric compressor phase overvoltageB2AB997Electric compressor overloadB2ABA1CElectric compressor internal low-voltage power-supply faultB2ABB17Electric compressor high-voltage-side overvoltageB2ABC16Electric compressor high-voltage-side undervoltageB2E7507Wi-Fi/Bluetooth driver loading failureB2E7900USB hub connection failureB2E8B00Instrument display screen abnormal display functionB2E8C00Vehicle recorder chip communication faultB2E8D00Security chip abnormal functionB2E8E00MCU-SOC SPI buffer overflowB2E8F00SOC startup timeoutB2E9100MCU abnormal rebootB2E9200ANC communication abnormalB2FD016Wireless charging module low supply-voltage alarmB2FD017Wireless charging module high supply-voltage alarmC003100Left front wheel speed sensor signal faultC003200Left front wheel speed sensor supply voltage lowC004900Brake fluid level below normalC050000Left front wheel speed sensor open circuitC050200Left front wheel speed sensor signal short to groundC050300Left front wheel speed sensor signal short to supplyC050400Left front wheel speed sensor air gap abnormalC050576Left front wheel speed sensor installed in wrong directionC1066FCSteering angle sensor calibration errorC110009EPB control module main chip faultC117009EPB switch faultC11A006EPB actuator overloadedC11B013Left EPB motor or line faultC11B113Right EPB motor or line faultC121200Camera obstructedC1B9000EPS power lossC1B9D21EPS power voltage too lowC1B9D22EPS power voltage too highP056200System voltage too lowP056300System voltage too highP151100AC high-voltage interlock faultP157016AC-side voltage lowP157017AC-side voltage highP157216DC-side voltage lowP157217DC-side voltage highP157219DC-side overcurrentP157400Power equipment faultP157897CC signal abnormalP15794BTemperature sampling 1 highP157A36Charging grid frequency lowP157A37Charging grid frequency highP157B00AC-side overcurrentP157C00Hardware protectionP157F11AC output short-circuitedP15834BTemperature sampling 2 highP158798Charging-port phase temperature seriously highP158900Charging-port phase temperature sampling abnormalP158A00Charging-port electric lock abnormalP15FD00Cooling water temperature highP15FF00Internal temperature sensor faultP1A0000Serious electric leakageP1A0100General electric leakageP1A0200BIC1 working abnormalP1A0300BIC2 working abnormalP1A0400BIC3 working abnormalP1A0500BIC4 working abnormalP1A0600BIC5 working abnormalP1A0700BIC6 working abnormalP1A0800BIC7 working abnormalP1A0900BIC8 working abnormalP1A0C00BIC1 voltage sampling abnormalP1A0D00BIC2 voltage sampling abnormalP1A0E00BIC3 voltage sampling abnormalP1A0F00BIC4 voltage sampling abnormalP1A1000BIC5 voltage sampling abnormalP1A1100BIC6 voltage sampling abnormalP1A1200BIC7 voltage sampling abnormalP1A1300BIC8 voltage sampling abnormalP1A2000BIC1 temperature sampling abnormalP1A2100BIC2 temperature sampling abnormalP1A2200BIC3 temperature sampling abnormalP1A2300BIC4 temperature sampling abnormalP1A2400BIC5 temperature sampling abnormalP1A2500BIC6 temperature sampling abnormalP1A2600BIC7 temperature sampling abnormalP1A2700BIC8 temperature sampling abnormalP1A3522Power battery cell voltage seriously highP1A3622Power battery cell voltage generally highP1A3721Power battery cell voltage seriously lowP1A3922Power battery cell temperature seriously highP1A3B21Power battery cell temperature seriously lowP1A3D00Negative contactor echo check faultP1A3E00Main contactor echo check faultP1A3F00Pre-charge contactor echo check faultP1A4100Main contactor sinteredP1A4200Negative contactor sinteredP1A560012V power input of battery management system too lowP1A6000High-voltage interlock 1 faultP1AC400Serious battery imbalanceP1AC900DC charging inductive signal disconnectedP1ACB07DC charging positive contactor sinteredP1ACC07DC charging negative contactor sinteredP1ADC00Front electric high-voltage interlock faultP1AE400High-voltage process ended due to abnormal low-voltage supplyP1AE800DC charging positive contactor echo check faultP1AE900DC charging negative contactor echo check faultP1AF200DC charger voltage output abnormalP1AF300DC charging cabinet stopped charging activelyP1AF400Insufficient capacity of DC charging cabinetP1AF800Battery data not updatedP1AFB00Air-conditioning high-voltage interlock faultP1AFC00On-board charger high-voltage interlock faultP1AFD00DC-DC high-voltage interlock faultP1BAC00Front motor controller IGBT core general overtemperatureP1BAC19Front motor controller IGBT core serious overtemperatureP1BB000Front drive motor overcurrentP1BB100Front motor controller IPM faultP1BB200Front drive motor general overtemperature warningP1BB298Front drive motor serious overtemperature warningP1BB300Front motor controller IGBT-NTC general overtemperatureP1BB319Front motor controller IGBT-NTC serious overtemperatureP1BB500Front motor controller high-voltage undervoltageP1BB600Front motor controller high-voltage overvoltageP1BB700Front motor controller voltage sampling faultP1BB800Front motor controller collision signal faultP1BB900Front motor controller cover-open protectionP1BBA00Front motor controller EEPROM errorP1BBC00Front motor controller DSP reset faultP1BBD00Front motor controller active discharge faultP1BBF00Front drive motor resolver/rotary transformer signal lostP1BC000Front drive motor resolver/rotary transformer angle abnormalP1BC100Front drive motor resolver/rotary transformer signal amplitude lowP1BC200Front drive motor phase A lostP1BC300Front drive motor phase B lostP1BC400Front drive motor phase C lostP1BC500Front motor controller Hall current sensor B faultP1BC600Front motor controller Hall current sensor C faultP1BC700Front motor controller IPM radiator overtemperatureP1BC800Front motor controller IGBT three-phase temperature check faultP1BC900Front motor controller Hall current sensor A faultP1BCF00Front drive motor temperature sensor fault - torque limitedP1BF100Front motor controller IPM temperature sampling abnormalP1BF200Front drive motor winding temperature sampling abnormalP1C0000Rear drive motor overcurrentP1C0200Rear drive motor general overtemperature warningP1C0219Rear drive motor serious overtemperature warningP1C0300Rear motor controller IGBT-NTC general overtemperatureP1C0500Rear motor controller high-voltage undervoltageP1C0600Rear motor controller high-voltage overvoltageP1C1900Rear drive motor winding temperature sensor sampling abnormalP1D6D00DSP reset fault of vehicle control unitP1D7902Collision alarmP1D7E00Coolant pump stalled or shut down due to overcurrentP1D8300Vehicle power limitedP1D8D00Cooling fan motor stalled/short-circuitedP1D8E00Cooling fan overtemperature/electronic faultP1D8F00Cooling fan power overvoltage or undervoltageP1D9016Voltage of power battery cell too lowP1D9017Voltage of power battery cell too highP1D9100Total voltage of power battery too highP1D9117Total voltage of power battery seriously highP1D9200Total voltage of power battery too lowP1D9216Total voltage of power battery seriously lowP1EC000High-voltage side voltage too high during DC-DC step-downP1EC100High-voltage side voltage too low during DC-DC step-downP1EC200Low-voltage side voltage too high during DC-DC step-downP1EC300Low-voltage side voltage too low during DC-DC step-downP1EC400Low-voltage side current too high during DC-DC step-downP1EC600High-voltage side current too high during DC-DC step-downP1EC700DC-DC hardware fault during step-downP1ED316Low-voltage-side supply voltage too highP1ED317Low-voltage-side supply voltage too lowP1ED400DC output positive disconnectedP1ED500AC electric leakageP1EE000DC-DC overtemperatureP268600High-voltage interlock faultP268700Power relay echo check faultP268873DC charging positive contactor sinteredP268973DC charging negative contactor sinteredP268A00DC charging positive contactor echo check faultP268B00DC charging negative contactor echo check faultP268C00DC charging port voltage abnormalP268D00AC charger connection signal inconsistentP2B7000Voltage sampling disconnected - general faultP2B7100Voltage sampling disconnected - serious faultP2B7200Temperature sampling disconnected - general faultP2B7300Temperature sampling disconnected - serious faultP2B7400Power battery overchargeP2B7516Power battery pack undervoltageP2B7517Power battery pack overvoltageP2B7900Battery pack charging overcurrent alarmP2B7B00Shunt temperature generally highP2B7C00Shunt temperature seriously highP2B7D00Temperature sampling fault at shuntP2B7E00Large deviation of current sampling at shuntP2B8000HVSU PACK+ voltage sampling faultP2B8100HVSU LINK+ voltage sampling faultP2B8200HVSU LINK- voltage sampling faultP2B8E00High-voltage-side drive undervoltageP2B8F12High-voltage-side drive overvoltageP2B9000High-voltage-side drive overcurrent (contactor channel)P2B9100DC charging port voltage abnormalP2B9200Abnormal battery temperature differenceP2B9211High-voltage-side short to ground (contactor channel)P2B9212High-voltage-side short to power (contactor channel)P2B9213High-voltage-side driver open circuitP2B9298High-voltage-side driver overtemperatureP2B9400Power battery overdischargedP2BA300Power battery not equalized at bottomU010087Lost communication with MG/ECMU0110-00Lost communication with motor control moduleU011187Communication with BMS failedU012187Communication with ABS failedU0127-00Lost communication with tire pressure moduleU014087Communication with BCM failedU015887Communication with ESP lostU016487Communication with air conditioner failedU018087Communication with high-voltage-side drive lostU0192804G chip communication faultU019380Gravity sensor data communication failureU019780Communication with intelligent power brake control module failedU01A500Communication with front motor control unit failedU01E487Gyroscope data communication failureU01F387Display communication errorU024887SIM card communication faultU024987Network signal failureU024E87Communication with ESC failedU029600Communication with power battery management module lostU029787Communication with on-board charger failedU029800Communication between battery management system and DC/DC failedU029887Communication with DC/DC failedU029F87Communication with OBC failedU030187Terminal/comfort network communication faultU030387Terminal/power or energy network communication faultU20B000BIC1 CAN communication timeoutU20B100BIC2 CAN communication timeoutU20B200BIC3 CAN communication timeoutU20B300BIC4 CAN communication timeoutU20B400BIC5 CAN communication timeoutU20B500BIC6 CAN communication timeoutU20B600BIC7 CAN communication timeoutU20B700BIC8 CAN communication timeoutU300316Battery soft undervoltageU300317Battery soft overvoltage