BYD SEALION 6 DM-i Fault Diagnosis and Troubleshooting Wirings Circuits | Interactive HTML Manual

Name: BYD SEALION 6 DM-i Fault Diagnosis and Troubleshooting Wirings Circuits | Interactive HTML Manual
Brand: BYD
SKU: 32264
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Description

This interactive HTML manual is engineered for professionals working on the BYD SEALION 6 DM-i (2024) plug-in hybrid SUV. It delivers diagnostic logic, wiring schematics, fault tracing, and circuit troubleshooting procedures—all organized in a clear, clickable HTML format with no broken links or redirections.

High Voltage (HV) & Hybrid Circuits

Visual breakdown of the DM-i hybrid system, with focus on BMU, BMS, OBC, DC/DC converter, and inverter
HV battery circuit diagrams, fusing, relays, and cable routing
Includes isolation fault testing, insulation resistance thresholds, and HV shutdown protocols

Fault Diagnosis & DTC Logic

Structured diagnostic workflows using DTCs (Diagnostic Trouble Codes) and guided test trees
Interactive references for each ECU, including:
- VCU (Vehicle Control Unit)
- MCU (Motor Control Unit)
- HVAC, EPS, BMS, SRS, Gateway
ECU connector terminal views with signal descriptions and voltages

Full Wiring Diagrams

Detailed circuit overlays by system: powertrain, body, chassis, ADAS, lighting, HVAC
Connector ID mapping, wire colors, gauges, fuse & relay positions
Includes power distribution, ground networks, and cross-system interconnects

System Troubleshooting

Covers failure scenarios like:
- HV system no start
- Intermittent inverter errors
- Communication loss (CAN, UDS, K-Line)
Includes symptom-code correlation, component test specs, and multimeter probe points

Format & Usage

Delivered in clean HTML file structure, easily browsable offline or on workshop intranets
No external dependencies (no href/target links), loads instantly
Organized using intuitive nesting by system/subsystem

Ideal Users

Diagnostic engineers
ECU tuning and flashing technicians
High-voltage qualified service techs
Retrofit shops working with BYD hybrid systems

Delivery:

The download link will be promptly delivered to your email upon completing the checkout process.

Content

2024 BYD SEALION 6 DM-i (Australia and New Zealand)
Table of Contents booklists - hide
- Table of Contents toc - hide
General Repair Information
- Diagnosis and repair method
  - Diagnostic information
    - Fault diagnosis and troubleshooting
    - Circuit simulation tests
    - Precautions for checking control modules and electrical parts
    - How to check connectors
  - Repair instructions
    - Operation tips
  - Circuit troubleshooting
    - Workflow
    - Detection and repair of fuses
    - How to deal with intermittent faults
    - How to deal with historical faults
  - Noise, vibration and harshness (NVH)
    - Instructions and operations
    - Diagnosis and testing
Engine
- Engine electronic control system (1.5L)
  - Diagnostic instructions
  - Conventional fault symptoms table
  - DTC list
  - P000A00 Intake VVT operation fault (delay)
  - P001000 Intake VVT control circuit open-circuited
  - P001676 Crankshaft-intake camshaft initial installation position implausible (Bank1)
  - P001678 Crankshaft-intake camshaft relative position deviation too high (Bank1)
  - P003000 Upstream heated oxygen sensor heating control circuit open-circuited
  - P003100 Upstream heated oxygen sensor heating control circuit undervoltage
  - P003200 Upstream heated oxygen sensor heating control circuit overvoltage
  - P003600 Downstream heated oxygen sensor heating control circuit open-circuited
  - P003700 Downstream heated oxygen sensor heating control circuit undervoltage
  - P003800 Downstream heated oxygen sensor heating control circuit overvoltage
  - P003C00 Intake VVT operation fault (stuck)
  - P005300 Upstream heated oxygen sensor heating circuit fault
  - P005400 Downstream heated oxygen sensor heater internal resistance implausible
  - P007000 Ambient temperature sensor CAN communication lost
  - P007200 Ambient temperature sensor circuit undervoltage
  - P007300 Ambient temperature sensor circuit overvoltage
  - P00CE23 Intake air temperature sensor 1 cold start check implausible (negative deviation)
  - P00CE24 Intake air temperature sensor 1 cold start check implausible (positive deviation)
  - P010621 Intake pressure sensor pressure implausible (much lower than model pressure)
  - P010622 Intake pressure sensor pressure implausible (much higher than model pressure)
  - P01062A Intake pressure sensor signal value abnormal without fluctuation
  - P010700 Intake manifold pressure sensor short-circuited to GND
  - P010800 Intake manifold pressure sensor short-circuited to power supply
  - P011126 Intake air temperature sensor 1 signal implausible (stuck)
  - P011200 Intake air temperature sensor 1 circuit undervoltage
  - P011300 Intake air temperature sensor 1 circuit overvoltage
  - P011400 Intake air temperature sensor 1 circuit voltage implausible
  - P011623 Coolant temperature sensor 1 signal implausible (low-side)
  - P011700 Coolant temperature sensor 1 circuit undervoltage
  - P011800 Coolant temperature sensor 1 circuit overvoltage
  - P011900 Coolant temperature sensor 1 circuit voltage implausible
  - P012100 Electronic throttle position sensor 1 signal implausible
  - P012200 Electronic throttle position sensor 1 signal circuit undervoltage
  - P012300 Electronic throttle position sensor 1 signal circuit overvoltage
  - P012800 Thermostat performance implausible (coolant temperature unable to reach the nominal opening temperature of thermostat)
  - P013100 Upstream heated oxygen sensor signal circuit undervoltage (APE, IPE and RE circuits short-circuited to GND)
  - P013200 Upstream heated oxygen sensor signal circuit overvoltage (APE, IPE and RE circuits short-circuited to power supply)
  - P013300 Upstream heated oxygen sensor aging
  - P013600 Downstream heated oxygen sensor signal open-circuited
  - P013700 Downstream heated oxygen sensor signal circuit short-circuited to GND
  - P013800 Downstream heated oxygen sensor signal circuit short-circuited to power supply
  - P013A00 Rear heated oxygen sensor aging - slow signal response from the rich to lean side
  - P014D00 Front heated oxygen sensor aging - slow signal response from the lean to rich side
  - P020100 Cylinder 1 fuel injector control circuit open-circuited
  - P020200 Cylinder 2 fuel injector control circuit open-circuited
  - P020300 Cylinder 3 fuel injector control circuit open-circuited
  - P020400 Cylinder 4 fuel injector control circuit open-circuited
  - P022100 Electronic throttle position sensor 2 signal implausible
  - P022200 Electronic throttle position sensor 2 signal circuit undervoltage
  - P022300 Electronic throttle position sensor 2 signal circuit overvoltage
  - P025A00 Low-pressure oil pump circuit open-circuited
  - P025D00 Low-pressure oil pump circuit short-circuited
  - P026100 Cylinder 1 fuel injector control circuit undervoltage
  - P026200 Cylinder 1 fuel injector control circuit overvoltage
  - P026400 Cylinder 2 fuel injector control circuit undervoltage
  - P026500 Cylinder 2 fuel injector control circuit overvoltage
  - P026700 Cylinder 3 fuel injector control circuit undervoltage
  - P026800 Cylinder 3 fuel injector control circuit overvoltage
  - P027000 Cylinder 4 fuel injector control circuit undervoltage
  - P027100 Cylinder 4 fuel injector control circuit overvoltage
  - P030000 Engine random or multi-cylinder misfire
  - P030100 Physical cylinder 1 misfire detected
  - P030200 Physical cylinder 2 misfire detected
  - P030300 Physical cylinder 3 misfire detected
  - P030400 Physical cylinder 4 misfire detected
  - P032500 Knock sensor signal circuit undervoltage
  - P032600 Knock sensor signal circuit overvoltage
  - P032700 Knock sensor terminal A short-circuited to GND
  - P032714 Knock sensor terminal B short-circuited to GND
  - P032800 Knock sensor terminal A short-circuited to power supply
  - P032815 Knock sensor terminal B short-circuited to power supply
  - P033000 Knock sensor 2 signal circuit undervoltage
  - P033100 Knock sensor 2 signal circuit overvoltage
  - P033200 Knock sensor 2 terminal A short-circuited to GND
  - P033214 Knock sensor 2 terminal B short-circuited to GND
  - P033300 Knock sensor 2 terminal A short-circuited to power supply
  - P033315 Knock sensor 2 terminal B short-circuited to power supply
  - P033900 Speed sensor signal implausible
  - P034100 Intake camshaft sensor signal implausible (Bank1)
  - P034200 Intake camshaft sensor signal short-circuited to GND (Bank1)
  - P034300 Intake camshaft sensor signal short-circuited to power supply (Bank1)
  - P035100 Cylinder 1 ignition coil control circuit open-circuited
  - P035200 Cylinder 2 ignition coil control circuit open-circuited
  - P035300 Cylinder 3 ignition coil control circuit open-circuited
  - P035400 Cylinder 4 ignition coil control circuit open-circuited
  - P036300 Fuel cut off triggered by engine misfire
  - P040100 EGR flow too low
  - P040200 EGR flow too high
  - P040437 EGR valve duty cycle out of limit
  - P040477 Deviation between target position and actual position of EGR valve out of limit
  - P040500 EGR valve position sensor undervoltage
  - P040600 EGR valve position sensor overvoltage
  - P040A29 Excessive deviation between EGR actual temperature 1 and model temperature
  - P040A2A EGR temperature sensor 1 stuck
  - P040C00 EGR temperature 1 sensor 1 undervoltage
  - P040D00 EGR temperature 1 sensor 1 overvoltage
  - P040E00 EGR temperature 1 sensor voltage jump
  - P042000 Oxygen storage capacity aging of three-way catalytic converter
  - P044400 Carbon canister control valve control circuit open-circuited
  - P045200 Fuel tank pressure sensor circuit undervoltage
  - P045300 Fuel tank pressure sensor circuit overvoltage
  - P045125 Fuel tank pressure sensor signal offset/vibration
  - P045800 Carbon canister control valve control circuit undervoltage
  - P045900 Carbon canister control valve control circuit overvoltage
  - P046129 Fuel level signal implausible
  - P046200 Oil level sensor circuit undervoltage
  - P046300 Oil level sensor circuit overvoltage
  - P048700 EGR valve control circuit terminal A/B open-circuited
  - P049700 Carbon canister solenoid valve stuck and normally closed
  - P049D21 EGR valve initial zero-position self-learning below lower limit
  - P049D22 EGR valve initial zero-position self-learning above upper limit
  - P049D72 EGR valve zero-position self-learning above upper limit
  - P049D73 EGR valve zero-position self-learning below lower limit
  - P050000 Vehicle speed sensor input signal fault
  - P050165 Vehicle speed sensor performance fault (vehicle speed too low during coasting with fuel cut off)
  - P050166 Vehicle speed implausible - vehicle speed too low under heavy engine load
  - P050400 Brake signal correlation fault
  - P050C23 Coolant temperature sensor 1 cold start check implausible (negative deviation)
  - P050C24 Coolant temperature sensor 1 cold start check implausible (positive deviation)
  - P056200 System undervoltage
  - P056300 System overvoltage
  - P061A00 Second-level torque monitoring fault (torque comparison fault)
  - P061C00 Second-level engine speed monitoring fault
  - P064100 5V power supply module 1 fault
  - P064D00 LSU integrated chip register write fault
  - P064D13 LSU integrated chip SPI communication fault
  - P064E00 Upstream heated oxygen sensor element fault
  - P065100 Chip 5V supply voltage 2 fault
  - P068500 Main relay open-circuited
  - P068600 Main relay short-circuited to GND
  - P06869E ECM/PCM main relay stuck or short-circuited to GND
  - P068700 Main relay short-circuited to power supply
  - P069700 5V power supply module 3 fault
  - P06B842 Error in reading NVM Block
  - P06B843 Error in writing NVM Block
  - P06DA00 Two-stage oil pump control open-circuited
  - P06DB00 Two-stage oil pump control circuit undervoltage
  - P06DC00 Two-stage oil pump control circuit overvoltage
  - P120000 Intake pressure sensor pressure above upper limit
  - P120100 Intake pressure sensor pressure below lower limit
  - P120200 Ambient pressure sensor pressure above upper limit
  - P120300 Ambient pressure sensor pressure below lower limit
  - P121200 Vehicle speed sensor performance fault (vehicle speed out of maximum range)
  - P128200 Fuel tank pressure sensor signal out of range (positive direction)
  - P128300 Fuel tank pressure sensor signal out of range (negative direction)
  - P128400 Fuel level signal out of range
  - P129300 GPF differential pressure sensor channel 1 digital signal implausible
  - P129400 GPF differential pressure sensor channel 2 digital signal implausible
  - P129600 GPF differential pressure sensor signal stuck
  - P129A00 GPF rear pipe pressure sensor signal stuck
  - P129B00 GPF pressure sensor B physical value above upper limit
  - P129C00 GPF pressure sensor B physical value below lower limit
  - P12A200 GPF differential pressure sensor pipeline connected incorrectly
  - P12A300 Rear pipe connecting pipeline of GPF differential pressure sensor abnormal
  - P12B100 GPF pressure sensor A physical value below lower limit
  - P12B300 GPF differential pressure sensor model incorrect
  - P12B500 Front pipe connecting pipeline of GPF differential pressure sensor abnormal
  - P12B900 GPF pressure sensor A physical value above upper limit
  - P136400 Low-pressure oil pump stalling
  - P138823 Ambient temperature sensor cold start check implausible (negative deviation)
  - P138824 Ambient temperature sensor cold start check implausible (positive deviation)
  - P142000 CAN hardware register response timeout
  - P150000 Collision fuel cut-off signal received by vehicle
  - P150100 Airbag communication message implausible
  - P151000 Knock sensor signal evaluation and diagnosis
  - P152000 Load predictive monitoring fault
  - P152300 Oil circuit monitoring fault in fuel cut-off mode
  - P152400 Oil circuit monitoring fault in oil supply mode
  - P152700 First-level safe fuel cut-off monitoring fault
  - P152800 Second-level safe fuel cut-off monitoring fault
  - P153000 AD converter zero test monitoring fault
  - P153100 AD converter given voltage test monitoring fault
  - P153300 Mixed gas monitoring fault
  - P153400 Load comparison monitoring fault
  - P153600 Working mode monitoring fault
  - P153800 Fault of ignition angle signal, wiring harness, or ECU
  - P153900 Synchronization process rationality check
  - P155000 Electronic throttle self-learning conditions not met
  - P155100 Electronic throttle lower limit position initialization self-learning fault
  - P155400 Maximum return spring check fault
  - P155500 Minimum return spring check fault
  - P155600 Throttle mechanical BDC second-time self-learning fault
  - P155700 Throttle mechanical BDC second-time self-learning minimum fault
  - P155800 Deviation between throttle limp position and initial self-learning out of limit
  - P155900 Throttle limp position above upper limit
  - P155A00 Deviation between throttle limp position and last self-learning out of limit
  - P155B00 Throttle limp position below lower limit
  - P156000 Throttle body PID adjustment out of limit
  - P156100 DVE position control deviation fault
  - P157100 Drive-level inspection fault or communication fault in closing path inspection
  - P157200 ABE activated under normal voltage
  - P157300 Monitoring error response fault
  - P157400 Errorpin activated, but monitoring communication normal
  - P157500 DVE drive shutdown caused by overvoltage
  - P15A000 CPU0: MPU fault (register, DSPR, PSPR)
  - P15A100 CPU0: DCACHE/DSPR ECC uncorrectable
  - P15A200 CPU0: DCACHE/DSPR address error
  - P15A300 CPU0:DCACHE TAG SRAM ECC uncorrectable
  - P15A400 CPU0:DCACHE TAG SRAM address error
  - P15A500 CPU0:PCACHE TAGRAM ECC uncorrectable
  - P15A600 CPU0:PCACHE TAGRAM address error
  - P15A700 CPU0: PCACHE/PSPR ECC uncorrectable
  - P15A800 CPU0:PCACHE/PSPR address error
  - P15A900 CPU1:Lockstep comparator fault
  - P15AA00 CPU1:MPU fault (register, DSPR, PSPR)
  - P15AB00 CPU1:DCACHE/DSPR ECC uncorrectable
  - P15AC00 CPU1:DCACHE/DSPR address error
  - P15AD00 CPU1:DCACHE TAGRAM ECC uncorrectable
  - P15AE00 CPU1:DCACHE TAGRAM address error
  - P15AF00 CPU1:PCACHE TAGRAM ECC uncorrectable
  - P15B000 CPU1:PCACHE TAGRAM address error
  - P15B100 CPU1:PCACHE/PSPR ECC uncorrectable
  - P15B200 CPU1:PCACHE/PSPR address error
  - P15B300 LMU:SRAM ECC monitoring fault
  - P15B400 LMU:SRAM ECC uncorrectable
  - P15B500 LMU:SRAM address error
  - P15B600 SMU: recovery Timer 0 timeout
  - P15B700 SMU: recovery Timer 1 timeout
  - P15B800 PMU:PFLASH ECC uncorrectable multiple bit faults
  - P15B900 PMU:PFLASH address error
  - P15BA00 PMU:PFLASH ECC monitoring fault (covering all ECC modules)
  - P15BB00 PMU:PFLASH EDC comparator fault (covering all PFLASH instances)
  - P15BC00 SCU/CGU: system PLL OSC_WDT: input clock out of limit
  - P15BD00 SCU/CGU: system PLL VCO clock event lost
  - P15BE00 SCU/EVR: EVR 1.3V digital undervoltage
  - P15BF00 SCU/EVR: EVR 3.3V overvoltage
  - P15C000 SCU/EVR: external power supply overvoltage
  - P15C100 SCU/WDTS: security watchdog timeout
  - P15C200 SCU/WDTCPU0: watchdog CPU0 timeout
  - P15C300 SCU/WDTCPU1: watchdog CPU1 timeout
  - P15C400 SCU/CGU: PLL_ERAY VCO clock event lost
  - P15C500 SCU/WDTCPU2: watchdog CPU2 timeout
  - P15C600 SCU/DTS: temperature sensor overflow
  - P15C700 Registers: fault detected by register monitoring
  - P15C800 SCU/LSCU: SCU configuration fault
  - P15C900 SCU/CGU: clock monitoring: STM out of frequency range
  - P15CA00 SCU/CGU: clock monitoring: PLL_ERAY out of frequency range
  - P15CB00 SCU/CGU: clock monitoring: PLL out of frequency range
  - P15CC00 SCU/CGU: clock monitoring: SRI out of frequency range
  - P15CD00 SCU/CGU: clock monitoring: SPB out of frequency range
  - P15CE00 SCU/CGU: clock monitoring: GTM out of frequency range
  - P15CF00 SCU/CGU: clock monitoring: ADC out of frequency range
  - P15D000 GTM: SRAMs uncorrectable
  - P15D100 FLEXRAY:SRAM address error
  - P15D200 Misc SRAMs:SRAM ECC uncorrectable
  - P15D300 Misc SRAMs:SRAM address error
  - P15D400 GTM: SRAMs address error
  - P15D500 CAN: SRAM uncorrectable
  - P15D600 CAN: SRAM address error
  - P15D700 FLEXRAY:SRAM ECC uncorrectable
  - P15D800 CPU2:MPU fault (register, DSPR, PSPR)
  - P15D900 CPU2: DCACHE/DSPR ECC uncorrectable
  - P15DA00 CPU2: DCACHE/DSPR address error
  - P15DB00 CPU2: DCACHE TAG SRAM ECC uncorrectable
  - P15DC00 CPU2:DCACHE TAG SRAM address error
  - P15DD00 CPU2:121 PCACHE TAGRAM ECC uncorrectable
  - P15DE00 CPU2:PCACHE TAGRAM address error
  - P15DF00 CPU2: PCACHE/PSPR ECC uncorrectable
  - P15E000 CPU2: PCACHE/PSPR address error
  - P170000 EGR drive circuit communication fault
  - P208800 Intake VVT control circuit undervoltage
  - P208900 Intake VVT control circuit overvoltage
  - P210000 Electronic throttle drive-level fault (open-circuited)
  - P210300 Electronic throttle drive-level fault (short-circuited)
  - P210600 Electronic throttle drive-level fault (implausible)
  - P211800 Electronic throttle drive-level fault (overheat or overcurrent)
  - P214200 EGR valve control circuit terminal A/B short-circuited to power supply or GND
  - P217700 Air-fuel ratio closed-loop control self-learning value above upper limit (medium load area)
  - P217800 Air-fuel ratio closed-loop control self-learning value below lower limit (medium load area)
  - P218323 Coolant temperature sensor 2 cold start check implausible (negative deviation)
  - P218324 Coolant temperature sensor 2 cold start check implausible (positive deviation)
  - P218400 Coolant temperature sensor 2 circuit undervoltage
  - P218500 Coolant temperature sensor 2 circuit overvoltage
  - P219500 LSU heated oxygen sensor characteristic offset (lean side)
  - P219600 LSU heated oxygen sensor characteristic offset (rich side)
  - P222721 Ambient pressure sensor pressure implausible (too low)
  - P222722 Ambient pressure sensor pressure implausible (too high)
  - P222800 Ambient pressure sensor short-circuited to GND
  - P222900 Ambient pressure sensor short-circuited to power supply
  - P223700 LSU heated oxygen sensor APE circuit open-circuited (close to ECU terminal)
  - P223713 LSU heated oxygen sensor APE circuit open-circuited
  - P224300 Upstream heated oxygen sensor RE circuit open-circuited
  - P225100 Upstream heated oxygen sensor IPE circuit open-circuited
  - P227000 Rear heated oxygen sensor aging - signal remaining lean
  - P227100 Rear heated oxygen sensor aging - signal remaining rich
  - P230000 Cylinder 1 ignition coil control circuit undervoltage
  - P230100 Cylinder 1 ignition coil control circuit overvoltage
  - P230300 Cylinder 2 ignition coil control circuit undervoltage
  - P230400 Cylinder 2 ignition coil control circuit overvoltage
  - P230600 Cylinder 3 ignition coil control circuit undervoltage
  - P230700 Cylinder 3 ignition coil control circuit overvoltage
  - P230900 Cylinder 4 ignition coil control circuit undervoltage
  - P231000 Cylinder 4 ignition coil control circuit overvoltage
  - P241400 Upstream heated oxygen sensor output voltage implausible
  - P245400 GPF differential pressure sensor circuit undervoltage
  - P245500 GPF differential pressure sensor circuit overvoltage
  - P25B000 Oil level sensor signal stuck
  - P261000 Chip shutdown timing function failure or error too large
  - P261700 Speed sensor signal lost
  - P262600 Upstream heated oxygen sensor MES circuit open-circuited
  - U007300 CAN bus 1 OFF
  - U012200 Loss of communication with ESP module
  - U014100 Loss of communication with left domain control unit
  - U015500 Loss of communication with instrument panel cluster
  - U016B00 Loss of communication with A/C module
  - U04A000 Engine coolant pump LIN communication fault
  - U067600 Loss/failure/check error of oil level sensor signal
  - U100E00 Loss of communication with HCU
  - U100F00 Loss of communication with HCU
  - U10B100 Loss of communication with VCU
  - U10B200 Loss of communication with VCU
  - U10B300 Loss of communication with VCU
  - U10B400 Loss of communication with VCU
  - U10B500 Loss of communication with VCU
  - U10B600 Loss of communication with VCU
  - U10B700 Loss of communication with VCU
  - U10B800 Loss of communication with instrument panel cluster
  - U350100 CAN module input undervoltage
  - U350200 CAN module input overvoltage
- Engine electronic control system (1.5T)
- Fuel supply system
High-voltage System
Thermal Management
Drive System
- Wheel system
  - Diagnostic instructions
  - Conventional fault symptoms table
- Transmission shaft
  - Diagnostic instructions
  - Conventional fault symptoms table
Steering System
- Diagnostic instructions
- Basic process of troubleshooting
- Conventional fault symptoms table
- DTC list
- C1A2600 LKA self-learning fault
- U01A500 Loss of communication with front motor control unit
- C1A3D00 LDW vibration protection
- C1A3D02 LDW self-learning fault
- C1A3E00 DST request out of limit
- C1A3E02 DST self-learning fault
- C1A4502 APA self-learning fault
- C1B1000 Vehicle speed fault
- U018F87 Loss of communication with VCU (VCU message 0x410 lost)
- U010087 Loss of communication with ECM (1.5L engine)
- U010087 Loss of communication with ECM (1.5T engine)
- U029D00 Loss of communication with ESP
- C1B9100 EPS fault - angle sensor (internal fault of angle sensor)
- C1B8600 Failure to write controller configuration information
- C1B8704 EPS fault - torque sensor (internal fault of torque sensor)
- C1B8500 General CAN network fault (CAN bus off)
- C1B8800 EPS fault - motor (motor fault)
- C1B8A00 EPS fault - ECU (configuration not completed)
- C1B8C00 EPS fault - ECU (calibration data lost)
- U1F0E87 Loss of communication with VCU (Ready message 0x341 lost)
- C1B9200 Center position of steering wheel not calibrated
- C1B8E00 EPS fault - ECU (ECU fault)
- C1B8F00 EPS fault - EPS thermal protection degradation (control unit overheating)
- C1B9500 MPC torque request fault
- U019D80 APA message fault
- C1A2600 LKA self-learning fault
Brake System
- IPB system
  - Diagnostic instructions
  - Basic process of troubleshooting
  - Conventional fault symptoms table
  - DTC list
  - B163302 0x1CC signal length error
  - B163308 0x1CC signal counter error
  - B163389 0x1CC signal check code error
  - B163402 0x1FA signal length error
  - B163408 0x1FA signal counter error
  - B163489 0x1FA signal check code error
  - B163502 SRS data length error
  - B163508 SRS CRC check error
  - B163589 SRS counter error
  - P056300 System overvoltage - OBD
  - P056200 System undervoltage - OBD
  - P056216 System undervoltage
  - U030100 40D engine type not matching
  - U031800 Variable input error or null variable
  - C050000 Front left wheel speed sensor open-circuited - OBD
  - C050200 Front left wheel speed sensor signal circuit short-circuited to GND circuit - OBD
  - C050300 Front left wheel speed sensor signal circuit short-circuited to power supply circuit - OBD
  - C050400 Abnormal air gap of front left wheel speed sensor - OBD
  - C003100 Front left wheel speed sensor signal fault - OBD
  - C003200 Front left wheel speed sensor supply voltage low OBD
  - C0500FC OBD_front left wheel speed sensor open-circuited
  - C050576 Wrong installation direction of front left wheel speed sensor
  - C055500 Front left wheel speed sensor signal protocol error - OBD
  - C05D500 TSV valve fault - OBD
  - P056023 UBVR(PIN14) power supply circuit open-circuited
  - P056024 UBVR(PIN46) power supply circuit open-circuited
  - C120700 Failure of pump to return
  - C13FC04 BCM 0x13B message CRC check error
  - C13FC08 BCM 0x13B message communication timeout
  - U059604 BCM 0x3B4 message communication timeout
  - U059608 BCM 0x3B4 byte length, CRC, Counter, signal value error
  - C1A3800 Failure to completely initialize system
  - C1E2008 Lateral acceleration invalid
  - C1E2089 Lateral channel status invalid
  - C1E2108 Longitudinal acceleration invalid
  - C1E2189 Longitudinal channel status invalid
  - C003400 Front right wheel speed sensor signal fault - OBD
  - C003500 Front right wheel speed sensor supply voltage low - OBD
  - C050A00 Abnormal air gap of front right wheel speed sensor - OBD
  - C0506FC OBD_front right wheel speed sensor open-circuited
  - C050600 Front right wheel speed sensor open-circuited - OBD
  - C050800 Front right wheel speed sensor signal circuit short-circuited to GND circuit - OBD
  - C050900 Front right wheel speed sensor signal circuit short-circuited to power supply circuit - OBD
  - C055600 Front right wheel speed sensor signal protocol error - OBD
  - C050B76 Wrong installation direction of front right wheel speed sensor
  - U059508 FM data corrupted 5
  - U059506 VCU 0x242 byte length, CRC, Counter, signal value error
  - U059509 VCU 0x356 byte length, CRC, Counter, signal value error
  - U01000F DTCS FMCU 0x2BF message communication timeout
  - U05950A DTCS - FMCU 0x2A9 byte length, CRC, Counter, signal value error
  - U05950B DTCS - FMCU 0x2BF byte length, CRC, Counter, signal value error
  - U01000E DTCS FMCU 0x2A9 message communication timeout
  - C05C300 OBD_brake booster motor_power supply circuit fault
  - P0562FC OBD_ECU low voltage_other cycles
  - C0072FB Brake overtemperature_other cycles
  - C0072FC General valve fault_other cycles
  - C101008 ECU software fault
  - C102001 ECU hardware error
  - C050C00 Rear left wheel speed sensor open-circuited - OBD
  - C050CFC OBD_rear left wheel speed sensor open-circuited
  - C050E00 Rear left wheel speed sensor signal circuit short-circuited to GND circuit - OBD
  - C050F00 Rear left wheel speed sensor signal circuit short-circuited to power supply circuit - OBD
  - C003700 Rear left wheel speed sensor signal fault - OBD
  - C003800 Rear left wheel speed sensor supply voltage low - OBD
  - C055700 Rear left wheel speed sensor signal protocol error - OBD
  - C051000 Abnormal air gap of rear left wheel speed sensor - OBD
  - C051176 Wrong installation direction of rear left wheel speed sensor
  - P05CB00 OBD_hardware incompatibility between ECU and HU
  - P057D00 OBD_brake pedal position sensor A circuit voltage high
  - P057C00 OBD_brake pedal position sensor A circuit voltage low
  - P05DE00 OBD_brake pedal position sensor B circuit voltage high
  - P05DD00 OBD_brake pedal position sensor B circuit voltage low
  - P057B00 OBD_brake pedal position sensor A circuit range/performance
  - P057E00 OBD_brake pedal position sensor A circuit intermittent/unstable
  - P05DF00 OBD_brake pedal position sensor B circuit intermittent/unstable
  - C061900 OBD_pedal position sensor 1 compensation over learning limit
  - C061A00 OBD_pedal position sensor 2 compensation over learning limit
  - C1000FC ECU error_other cycles
  - C056C00 OBD_pressure sensor 2 unstable
  - C200004 Rollerbench misuse
  - C062D00 OBD_solenoid valve VRG abnormal
  - C053CFC OBD_general wheel speed fault_other faults
  - C007204 Brake disc overheating
  - C0591FC OBD_brake booster motor 1 undercurrent
  - C059200 OBD_brake booster motor 2 overcurrent
  - C0592FC OBD_brake booster motor 2 overcurrent
  - C059300 OBD_brake booster motor 2 undercurrent
  - C0512FC OBD rear right wheel speed sensor open-circuited
  - C051400 Rear right wheel speed sensor signal circuit short-circuited to GND circuit - OBD
  - C051500 Rear right wheel speed sensor signal circuit short-circuited to power supply circuit - OBD
  - C003A00 Rear right wheel speed sensor signal fault - OBD
  - C003B00 Rear right wheel speed sensor supply voltage low - OBD
  - C051200 Rear right wheel speed sensor open-circuited - OBD
  - C051600 Abnormal air gap of rear right wheel speed sensor - OBD
  - C051776 Wrong installation direction of rear right wheel speed sensor
  - C055800 Rear right wheel speed sensor signal protocol error - OBD
  - C1901FC ECU supply voltage too low
  - C190004 ECU voltage high
  - C190104 ECU low voltage
  - C1E2A00 RCTB signal counter error
  - C1E2B00 RCTB signal check code error
  - C1E2C00 RCTB signal length error
  - C1E2D00 RCTB signal communication timeout
  - C1E2E00 Request for control ACCAebaxTar invalid
  - C1E2F00 Target deceleration requested by ACC invalid
  - C1E3000 DTC signal counter error
  - C1E3100 DTC signal check code error
  - C1E3200 DTC signal length error
  - C1E3300 DTC signal communication timeout
  - C1E3400 Coasting feedback target torque failure
  - C1E3500 Front axle DMC version information value invalid
  - C1E3600 Rear axle DMC version information value invalid
  - C004460 Pressure sensor signal fault
  - C004900 Fluid level sensor circuit open-circuited - OBD
  - C001000 Front left fluid inlet valve fault - OBD
  - C001100 Front left fluid outlet valve fault - OBD
  - C001400 Front right fluid inlet valve fault - OBD
  - C001500 Front right fluid outlet valve fault - OBD
  - C001800 Rear left fluid inlet valve fault - OBD
  - C001900 Rear left fluid outlet valve fault - OBD
  - C001C00 Rear right fluid inlet valve fault - OBD
  - C001D00 Rear right fluid outlet valve fault - OBD
  - C002400 SSV valve fault
  - C002100 Brake booster module pipeline hydraulic pressure lower than normal value - OBD
  - C002192 Brake booster module pipeline hydraulic pressure lower than normal value
  - C058200 Brake booster motor circuit signal abnormal - OBD
  - C058800 Circuit undervoltage of brake booster motor position sensor A - OBD
  - C058900 Circuit overvoltage of brake booster motor position sensor A - OBD
  - C059000 Brake booster motor supply current too high - OBD
  - C058A00 Circuit voltage of brake booster motor position sensor A abnormal - OBD
  - C058AFC OBD_MPS1 Performance_other cycles
  - C0590FC OBD_brake booster motor 1 overcurrent
  - C059100 Brake booster motor supply undercurrent - OBD
  - C0593FC OBD_brake booster motor 2 undercurrent
  - C059400 Brake booster motor load abnormal - OBD
  - C059500 Electrical booster power supply abnormal - OBD
  - C059592 Electrical booster power supply abnormal
  - C0595FC OBD_brake booster internal power driver performance
  - C059700 Exhaust not completed
  - C059900 Brake booster control module not calibrated
  - C05C200 Brake booster motor A overtemperature - OBD
  - C05C24B Brake booster motor A overtemperature - OBD
  - C004C04 ESP off switch failure
  - C007200 Brake system overtemperature or brake pedal/accelerator pedal signal implausible
  - C052901 Steering angle sensor module lost
  - C055000 ECU fault
  - C055F00 Hydraulic unit abnormal - OBD
  - C055F92 Hydraulic unit fault
  - C055FFB Hydraulic unit pressure build-up fault
  - C055FFC OBD_hydraulic unit pressure buildup fault
  - C104C04 AVH switch fault
  - C104400 Hydraulic unit exhaust not completed - OBD
  - C121208 Model variable code error
  - C2A2000 Hydraulic circuit C overcompensation
  - P05E000 OBD_brake pedal position sensors A and B check error
  - P05E009 Brake pedal position sensors A and B check error
  - P05FF00 OBD_BSM check error
  - P05FF09 BSM check error
  - P060400 ECU internal control module fault (RAM) - OBD
  - P060500 ECU internal control module fault (ROM) - OBD
  - P060600 ECU fault (hardware / microprocessor) - OBD
  - P0606FC OBD_ECU error_other cycles
  - P060700 ECU hardware fault - OBD
  - P060B00 ECU hardware fault (A/D processor) - OBD
  - P060C00 ECU internal control module fault (program running)
  - P060C00 ECU internal control module fault (program running) - OBD
  - P062C00 OBD_ECU ASIC wheel speed sensor module abnormal
  - U01F087 0x1CC signal communication timeout
  - U01F187 0x1FA signal communication timeout
  - U01F287 SRS signal communication timeout
  - U025900 VCU message communication timeout - OBD
  - U02D883 SCU 0x35C message signal damaged
  - U02D886 SCU system fault
  - U02D887 SCU 0x35C message communication timeout
  - U300000 Microprocessor error in ECU - OBD
  - U300600 Control module input voltage error
  - C000100 TCS control valve A fault 1
  - C000200 TCS control valve A fault 2
  - C000300 CSV valve 2 fault - OBD
  - C000400 TCS control valve B fault 2
  - C006102 IPB 0x223 message Ay signal value error
  - C006108 Lateral acceleration sensor signal fault
  - C006164 IPB 0x223 message Ay signal status bit error
  - C006202 IPB 0x223 message Ax signal value error
  - C006208 Longitudinal acceleration sensor signal fault
  - C006302 IPB 0x222 message Yaw signal value error
  - C006308 IPB 0x222 message Yaw signal value error
  - C006382 IPB 0x222 message Counter value error
  - C1C3F08 Indicated yaw rate invalid
  - C1C3F02 Yaw rate channel status invalid
  - C006A01 Yaw rate sensor parameter configuration error
  - C006A02 Yaw rate sensor signal error
  - C051D01 IPB yaw rate sensor calibration error
  - C006B00 ESP system runtime abnormal
  - C007406 EMC_other actuators activated
  - C009000 MW_eeprom reading or writing out of limit
  - C009100 MW_MPU detected inactive
  - C009200 MW_spillage during movement
  - C00A800 Integrated inertial sensor (IIS) not calibrated or failed
  - C046008 EPS 0x11F message SAS signal value unreliable/error
  - C052801 EPS 0x11F message SAS signal and wheel speed check abnormal
  - C053C00 Wheel speed sensor signal cross-check error - OBD
  - C053C76 Wrong installation direction of wheel speed sensor
  - C053D00 Pressure sensor B signal abnormal - OBD
  - C053E00 Pressure sensor A circuit undervoltage - OBD
  - C053F00 Pressure sensor A circuit overvoltage - OBD
  - C054100 Pressure sensor B signal abnormal - OBD
  - C054200 Pressure sensor B circuit undervoltage - OBD
  - C054300 Pressure sensor B circuit overvoltage - OBD
  - C055164 IPB 0x223 message Ax signal status bit error
  - C053B00 Power supply circuit of ABS valve open-circuited OBD
  - C056300 OBD_ABS control implausible
  - C056364 ABS system runtime abnormal
  - C056B00 Brake booster module pressure sensor fault - OBD
  - C057900 Circuit undervoltage of brake booster temperature sensor B - OBD
  - C057A00 Circuit overvoltage of brake booster temperature sensor B - OBD
  - C057E00 OBD_booster temperature abnormal
  - C057F00 Brake booster motor open-circuited - OBD
  - C058E00 OBD CRB signal invalid
  - C058F00 VCU 0x410 message coasting feedback signal error - OBD
  - C05CA00 Master cylinder position sensor A circuit overvoltage - OBD
  - C05CB00 Master cylinder position sensor A circuit undervoltage - OBD
  - C007500 Master cylinder position sensor A fault/short-circuited - OBD
  - C05CC00 Master cylinder position sensor A abnormal - OBD
  - C05CD00 Master cylinder position sensor B circuit overvoltage - OBD
  - C05CE00 Brake master cylinder piston position sensor B undervoltage
  - C05CF00 Master cylinder position sensor B abnormal - OBD
  - C05D000 Master cylinder position sensor signal value error - OBD
  - P229900 Master cylinder position sensor signal check error - OBD
  - C05D200 Master cylinder stroke greater than expected value - OBD
  - C05D300 Brake pedal pressure greater than expected value - OBD
  - C05D309 Brake pedal pressure greater than expected value
  - C055E00 Brake hydraulic circuit A leakage
  - C12F909 Brake hydraulic circuit blocked
  - C05B000 Brake hydraulic circuit L2 leakage - OBD
  - C05B001 Brake hydraulic circuit L1 leakage
  - C2A1700 Brake hydraulic circuit L1 overcompensation (air present)
  - C102A00 R gear signal check abnormal
  - C106600 Steering angle sensor not calibrated
  - C1066FC SAS calibration error
  - C13FA00 Tire pressure reset switch stuck
  - C13F100 TPMS third-party access out of limit
  - C13F300 TPMS EEPROM error
  - C13F400 TPMS library error
  - C13F401 TPMS library error
  - C13F402 TPMS check error
  - C13F403 TPMS operation error
  - C13F600 TPMS access EEPROM diagnostic data abnormal
  - C13F700 TPMS inefficient
  - C13F800 TPMS tire size error
  - P060200 ECU_SW control module programming error - OBD
  - P06B800 ECU internal control module fault (NVRAM memory) - OBD
  - P06B8FC OBD_ECU hardware error: RAM fault
  - P25C600 Circuit undervoltage of brake booster temperature sensor A - OBD
  - P25C700 Circuit overvoltage of brake booster temperature sensor A - OBD
  - U000400 OBD_CAN bus undervoltage
  - U000500 OBD_CAN bus overvoltage
  - U007300 CAN bus abnormal (private CAN) - OBD
  - U01000A ECM data corrupted
  - U01000B VCU 0x240 byte length, CRC, Counter, signal value error
  - U01000C VCU 0x240 message communication timeout
  - U01000D ECM communication timeout
  - U011000 VCU 0x241 message communication timeout - OBD
  - U012604 EPS 0x11F message communication timeout
  - U012608 EPS 0x11F byte length, CRC, Counter, signal value error
  - U012682 SAS counter error
  - U013104 EPS 0x27F message communication timeout
  - U014883 DTCS - Failure in handshake between FMCU DMC and IPB
  - U014887 DTCS FMCU input signal invalid
  - U030000 ECU internal control module software fault - OBD
  - U030080 0x272 signal communication timeout
  - U030082 0x272 signal counter error
  - U030089 0x272 signal length error
  - U030183 0x272 signal check code error
  - U041100 VCU 0x241 byte length, CRC, Counter, signal value error - OBD
  - U042008 EPS 0x27F byte length, CRC, Counter, signal value error
  - U043204 Yaw rate sensor signal communication timeout
  - U043208 IPB private network IMU signal byte length, CRC, Counter, signal value error
  - U044700 OBD_invalid data received from gateway
  - U059204 VCU 0x251 message communication timeout
  - U059208 VCU 0x251 byte length, CRC, Counter, signal value error
  - U059504 VCU 0x241 message communication timeout
  - U059505 VCU 0x241 byte length, CRC, Counter, signal value error
  - U100004 CAN bus abnormal (common CAN)
  - U100304 EPB 0x218 message communication timeout
  - U100308 EPB 0x218 byte length, CRC, Counter, signal value error
  - U161308 EPS 0x11F message SAS signal status bit invalid
  - U162308 EPS 0x11F message SAS signal status bit invalid
  - U014604 Gateway communication timeout
  - U014608 BCM 0x294 byte length, CRC, Counter, signal value error
  - C000A08 ACC 0x32E byte length CRC Counter signal value error
  - C000B04 ACC 0x32E message communication timeout
  - U010000 EMS 0x10D message communication timeout - OBD
  - U010003 EMS 0x10D message engine signal abnormal (speed, operating state)
  - U010004 EMS 0x10D message communication timeout
  - U010005 EMS 0x10D byte length, CRC, Counter, signal value error
  - U040100 EMS 0x10D byte length, CRC, Counter, signal value error - OBD
- EPB system
Wiping and Washing
- Washer system
  - Diagnostic instructions
  - Basic process of troubleshooting
  - DTC list
  - B1C0D12 Washer motor short-circuited
  - B1C0D13 Washer motor open-circuited
  - B1C0D71 Washer motor stalling
- Wiper
Roof
Supplemental Restraint System
Entry and Immobilizer System
Refueling and Charging Port Cap Control
Low-voltage Power Supply and Distribution
Instrument and Warning System
Driver Assistance
Comfort and Convenience System
IVI
Interior Light System
Exterior Light System
A/C
Switch and Wiring Harness
Network and Communication
- Gateway system
  - Diagnostic instructions
  - Basic process of troubleshooting
  - DTC list
  - Conventional fault diagnosis
  - B12F200 Loss of communication with electronic injection network
  - B12ED00 Loss of communication with body network
  - B12F100 Loss of communication with chassis network
  - B12F400 Loss of communication with energy network
  - B12F500 Loss of communication with ADAS network
  - B12EE00 Loss of communication with smart access network
  - B123400 Power supply voltage low
  - B123500 Power supply overvoltage

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BYD SEALION 6 DM-i Fault Diagnosis and Troubleshooting Wirings Circuits | Interactive HTML Manual

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High Voltage (HV) & Hybrid Circuits

Fault Diagnosis & DTC Logic

Full Wiring Diagrams

System Troubleshooting

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