The ‘B’ in a Diagnostic Trouble Code (DTC) indicates that the issue lies within the vehicle’s body systems, encompassing safety and comfort features inside the driver’s cabin; for comprehensive Mercedes-Benz diagnostics, MERCEDES-DIAGNOSTIC-TOOL.EDU.VN offers expert solutions. Understanding DTCs, including body codes, is crucial for effective vehicle maintenance. We help you identify and resolve issues efficiently, ensuring your Mercedes-Benz operates at its best with enhanced safety features and Mercedes-Benz troubleshooting.
Contents
- 1. Decoding Diagnostic Trouble Codes (DTCs)
- 1.1 The Structure of DTCs
- 1.2 The Role of the Onboard Diagnostic (OBD) System
- 2. What Does ‘B’ Stand for in a DTC? (Body)
- 2.1 Body System Components
- 2.2 Examples of ‘B’ Codes and Their Meanings
- 2.3 Diagnosing and Resolving ‘B’ Code Issues
- 3. The Importance of Addressing ‘B’ Codes Promptly
- 4. Tools and Equipment for Diagnosing ‘B’ Codes
- 5. Common Mistakes to Avoid When Diagnosing ‘B’ Codes
- 6. Advanced Diagnostic Techniques for ‘B’ Codes
- 7. Case Studies: Real-World ‘B’ Code Diagnostics
- 7.1 Case Study 1: B1004 – Airbag System Fault
- 7.2 Case Study 2: B1007 – Window Lifter Fault
- 7.3 Case Study 3: B1012 – Lighting System Fault
- 8. Mercedes-Benz Specific ‘B’ Codes:
1. Decoding Diagnostic Trouble Codes (DTCs)
Diagnostic Trouble Codes (DTCs) are standardized codes used in the automotive industry to identify specific faults or issues detected by a vehicle’s onboard diagnostic (OBD) system. These codes are invaluable for technicians and vehicle owners alike, providing a quick and efficient way to pinpoint problems and initiate repairs. DTCs are typically five characters long, consisting of a letter followed by four numbers. Each character provides specific information about the nature and location of the issue.
1.1 The Structure of DTCs
The DTC structure is designed to offer a comprehensive overview of the problem at hand. Understanding this structure can significantly aid in diagnosing and resolving vehicle issues. Each character in the DTC serves a specific purpose:
- First Character: Indicates the system where the fault occurred.
- Second Character: Specifies whether the code is generic (standardized across all manufacturers) or manufacturer-specific.
- Third Character: Denotes the specific subsystem related to the fault.
- Fourth and Fifth Characters: Provide detailed information about the specific fault within the identified system and subsystem.
This standardized structure allows for efficient communication and troubleshooting across different vehicle makes and models, making DTCs an essential tool in modern automotive diagnostics.
1.2 The Role of the Onboard Diagnostic (OBD) System
The Onboard Diagnostic (OBD) system is a computer system in vehicles that monitors the performance of various components and systems. When the OBD system detects a problem, it generates a DTC and stores it in the vehicle’s computer. This DTC can then be retrieved using a diagnostic scanner, providing valuable information for diagnosing and repairing the issue.
The OBD system plays a crucial role in ensuring vehicles meet emission standards and operate efficiently. By continuously monitoring vehicle performance, the OBD system helps identify potential problems early, preventing more significant damage and costly repairs. The OBD-II port, typically located under the dashboard, allows technicians and vehicle owners to access this data using a diagnostic scanner, making it easier to diagnose and resolve issues quickly.
2. What Does ‘B’ Stand for in a DTC? (Body)
When the first character of a DTC is ‘B,’ it indicates that the diagnostic trouble code relates to the vehicle’s body systems. These systems include a range of components and features that contribute to the comfort, convenience, and safety of the vehicle’s occupants. Body codes can cover various issues, from malfunctioning power windows to problems with the airbag system. Understanding ‘B’ codes is essential for diagnosing and addressing issues that affect the vehicle’s interior and exterior components.
2.1 Body System Components
Body systems encompass a wide array of components and features designed to enhance the driving experience and ensure passenger safety. These include:
- Power Windows and Locks: These systems control the operation of the vehicle’s windows and door locks, providing convenience and security for the occupants.
- Airbag System: The airbag system is a critical safety feature designed to protect occupants in the event of a collision. It includes sensors, control modules, and airbags that work together to minimize injury during a crash.
- Lighting Systems: Interior and exterior lighting systems ensure visibility and safety while driving, including headlights, taillights, and interior dome lights.
- Entertainment Systems: Audio and video systems provide entertainment for the occupants, including radios, CD players, and navigation systems.
- Climate Control Systems: Heating, ventilation, and air conditioning (HVAC) systems regulate the temperature and airflow inside the vehicle, ensuring a comfortable environment for the occupants.
2.2 Examples of ‘B’ Codes and Their Meanings
‘B’ codes can cover a wide range of issues within the vehicle’s body systems. Here are some examples of common ‘B’ codes and their meanings:
| Code | Description | Possible Causes |
|---|---|---|
| B1000 | Control Module Fault | Faulty control module, wiring issues, software problems |
| B1001 | ECU Internal Fault | Internal failure of the electronic control unit (ECU) |
| B1002 | System Configuration Error | Incorrect configuration settings, software incompatibility |
| B1003 | Security System Malfunction | Faulty security system components, wiring issues, key fob problems |
| B1004 | Airbag System Fault | Faulty airbag sensor, wiring issues, airbag module problems |
| B1005 | Restraint System Fault | Faulty seatbelt pretensioner, wiring issues, restraint system module problems |
| B1006 | Central Locking System Fault | Faulty door lock actuator, wiring issues, central locking module problems |
| B1007 | Window Lifter Fault | Faulty window motor, wiring issues, window switch problems |
| B1008 | Seat Adjustment Fault | Faulty seat motor, wiring issues, seat adjustment switch problems |
| B1009 | Mirror Adjustment Fault | Faulty mirror motor, wiring issues, mirror adjustment switch problems |
| B1010 | Wiper System Fault | Faulty wiper motor, wiring issues, wiper switch problems |
| B1011 | Washer System Fault | Faulty washer pump, wiring issues, washer switch problems |
| B1012 | Lighting System Fault | Faulty light bulb, wiring issues, lighting control module problems |
| B1013 | Interior Lighting Fault | Faulty interior light bulb, wiring issues, interior lighting control module problems |
| B1014 | Exterior Lighting Fault | Faulty exterior light bulb, wiring issues, exterior lighting control module problems |
| B1015 | Alarm System Fault | Faulty alarm siren, wiring issues, alarm control module problems |
| B1016 | Immobilizer System Fault | Faulty immobilizer transponder, wiring issues, immobilizer control module problems |
| B1017 | Key Recognition Fault | Faulty key fob, wiring issues, key recognition module problems |
| B1018 | Remote Control Fault | Faulty remote control transmitter, wiring issues, remote control receiver problems |
| B1019 | Sunroof System Fault | Faulty sunroof motor, wiring issues, sunroof switch problems |
| B1020 | Convertible Top System Fault | Faulty convertible top motor, wiring issues, convertible top switch problems |
| B1021 | Power Seat System Fault | Faulty power seat motor, wiring issues, power seat switch problems |
| B1022 | Power Mirror System Fault | Faulty power mirror motor, wiring issues, power mirror switch problems |
| B1023 | Power Window System Fault | Faulty power window motor, wiring issues, power window switch problems |
| B1024 | Power Door Lock System Fault | Faulty power door lock actuator, wiring issues, power door lock switch problems |
| B1025 | Heated Seat System Fault | Faulty heated seat element, wiring issues, heated seat switch problems |
| B1026 | Cooled Seat System Fault | Faulty cooled seat fan, wiring issues, cooled seat switch problems |
| B1027 | Steering Wheel Adjustment Fault | Faulty steering wheel motor, wiring issues, steering wheel adjustment switch problems |
| B1028 | Pedal Adjustment Fault | Faulty pedal motor, wiring issues, pedal adjustment switch problems |
| B1029 | Instrument Panel Lighting Fault | Faulty instrument panel bulb, wiring issues, instrument panel dimmer switch problems |
| B1030 | Headlamp Washer System Fault | Faulty headlamp washer pump, wiring issues, headlamp washer switch problems |
| B1031 | Rear Window Washer System Fault | Faulty rear window washer pump, wiring issues, rear window washer switch problems |
| B1032 | Wiper Park Position Fault | Faulty wiper motor, wiring issues, wiper park switch problems |
| B1033 | Wiper Speed Control Fault | Faulty wiper motor, wiring issues, wiper speed control switch problems |
| B1034 | Lighting Control Switch Fault | Faulty lighting control switch, wiring issues |
| B1035 | Door Ajar Switch Fault | Faulty door ajar switch, wiring issues |
| B1036 | Hood Ajar Switch Fault | Faulty hood ajar switch, wiring issues |
| B1037 | Trunk Ajar Switch Fault | Faulty trunk ajar switch, wiring issues |
| B1038 | Fuel Filler Door Ajar Switch Fault | Faulty fuel filler door ajar switch, wiring issues |
| B1039 | Glove Box Ajar Switch Fault | Faulty glove box ajar switch, wiring issues |
| B1040 | Ashtray Lighting Fault | Faulty ashtray bulb, wiring issues |
| B1041 | Cigarette Lighter Fault | Faulty cigarette lighter element, wiring issues |
| B1042 | Accessory Power Outlet Fault | Faulty accessory power outlet, wiring issues |
| B1043 | Navigation System Fault | Faulty navigation system module, wiring issues, GPS antenna problems |
| B1044 | Audio System Fault | Faulty audio system module, wiring issues, speaker problems |
| B1045 | Display Screen Fault | Faulty display screen, wiring issues |
| B1046 | Clock System Fault | Faulty clock module, wiring issues |
| B1047 | Compass System Fault | Faulty compass module, wiring issues |
| B1048 | Outside Temperature Sensor Fault | Faulty outside temperature sensor, wiring issues |
| B1049 | Inside Temperature Sensor Fault | Faulty inside temperature sensor, wiring issues |
| B1050 | Humidity Sensor Fault | Faulty humidity sensor, wiring issues |
| B1051 | Air Quality Sensor Fault | Faulty air quality sensor, wiring issues |
| B1052 | Rain Sensor Fault | Faulty rain sensor, wiring issues |
| B1053 | Light Sensor Fault | Faulty light sensor, wiring issues |
| B1054 | Parking Assist System Fault | Faulty parking sensor, wiring issues, parking assist module problems |
| B1055 | Blind Spot Detection System Fault | Faulty blind spot sensor, wiring issues, blind spot detection module problems |
| B1056 | Lane Departure Warning System Fault | Faulty lane departure sensor, wiring issues, lane departure warning module problems |
| B1057 | Adaptive Cruise Control System Fault | Faulty adaptive cruise control sensor, wiring issues, adaptive cruise control module problems |
| B1058 | Collision Avoidance System Fault | Faulty collision avoidance sensor, wiring issues, collision avoidance module problems |
| B1059 | Automatic Emergency Braking System Fault | Faulty automatic emergency braking sensor, wiring issues, automatic emergency braking module problems |
| B1060 | Pedestrian Detection System Fault | Faulty pedestrian detection sensor, wiring issues, pedestrian detection module problems |
| B1061 | Traffic Sign Recognition System Fault | Faulty traffic sign recognition sensor, wiring issues, traffic sign recognition module problems |
| B1062 | Driver Monitoring System Fault | Faulty driver monitoring sensor, wiring issues, driver monitoring module problems |
| B1063 | Seat Occupancy Detection System Fault | Faulty seat occupancy sensor, wiring issues, seat occupancy detection module problems |
| B1064 | Child Seat Detection System Fault | Faulty child seat sensor, wiring issues, child seat detection module problems |
| B1065 | Automatic High Beam Control System Fault | Faulty automatic high beam sensor, wiring issues, automatic high beam control module problems |
| B1066 | Cornering Light System Fault | Faulty cornering light, wiring issues, cornering light control module problems |
| B1067 | Ambient Lighting System Fault | Faulty ambient light, wiring issues, ambient lighting control module problems |
| B1068 | Welcome Lighting System Fault | Faulty welcome light, wiring issues, welcome lighting control module problems |
| B1069 | Footwell Lighting System Fault | Faulty footwell light, wiring issues, footwell lighting control module problems |
| B1070 | Door Handle Lighting System Fault | Faulty door handle light, wiring issues, door handle lighting control module problems |
| B1071 | Vanity Mirror Lighting System Fault | Faulty vanity mirror light, wiring issues, vanity mirror lighting control module problems |
| B1072 | Glove Box Lighting System Fault | Faulty glove box light, wiring issues, glove box lighting control module problems |
| B1073 | Trunk Lighting System Fault | Faulty trunk light, wiring issues, trunk lighting control module problems |
| B1074 | Reading Light System Fault | Faulty reading light, wiring issues, reading lighting control module problems |
| B1075 | Map Light System Fault | Faulty map light, wiring issues, map lighting control module problems |
| B1076 | Courtesy Light System Fault | Faulty courtesy light, wiring issues, courtesy lighting control module problems |
| B1077 | Entry Lighting System Fault | Faulty entry light, wiring issues, entry lighting control module problems |
| B1078 | Exit Lighting System Fault | Faulty exit light, wiring issues, exit lighting control module problems |
| B1079 | Panic Alarm System Fault | Faulty panic alarm button, wiring issues, panic alarm control module problems |
| B1080 | Anti-Theft System Fault | Faulty anti-theft sensor, wiring issues, anti-theft control module problems |
| B1081 | Vehicle Tracking System Fault | Faulty vehicle tracking module, wiring issues, GPS antenna problems |
| B1082 | Telematics System Fault | Faulty telematics module, wiring issues, communication problems |
| B1083 | Emergency Call System Fault | Faulty emergency call button, wiring issues, emergency call module problems |
| B1084 | Roadside Assistance System Fault | Faulty roadside assistance button, wiring issues, roadside assistance module problems |
| B1085 | Valet Mode System Fault | Faulty valet mode switch, wiring issues, valet mode control module problems |
| B1086 | Speed Limiter System Fault | Faulty speed limiter switch, wiring issues, speed limiter control module problems |
| B1087 | Distance Warning System Fault | Faulty distance warning sensor, wiring issues, distance warning control module problems |
| B1088 | Following Distance Indicator System Fault | Faulty following distance sensor, wiring issues, following distance indicator control module problems |
| B1089 | Forward Collision Warning System Fault | Faulty forward collision sensor, wiring issues, forward collision warning control module problems |
| B1090 | Rear Collision Warning System Fault | Faulty rear collision sensor, wiring issues, rear collision warning control module problems |
| B1091 | Side Collision Warning System Fault | Faulty side collision sensor, wiring issues, side collision warning control module problems |
| B1092 | Rollover Detection System Fault | Faulty rollover sensor, wiring issues, rollover detection control module problems |
| B1093 | Adaptive Headlight System Fault | Faulty adaptive headlight motor, wiring issues, adaptive headlight control module problems |
| B1094 | Automatic Headlight Leveling System Fault | Faulty automatic headlight leveling sensor, wiring issues, automatic headlight leveling control module problems |
| B1095 | Headlight Washer System Fault | Faulty headlight washer pump, wiring issues, headlight washer control module problems |
| B1096 | Rain Closing System Fault | Faulty rain sensor, wiring issues, rain closing control module problems |
| B1097 | Automatic Wiper System Fault | Faulty rain sensor, wiring issues, automatic wiper control module problems |
| B1098 | Defog System Fault | Faulty defog sensor, wiring issues, defog control module problems |
| B1099 | Sunload Sensor Fault | Faulty sunload sensor, wiring issues |
2.3 Diagnosing and Resolving ‘B’ Code Issues
Diagnosing and resolving ‘B’ code issues requires a systematic approach. Start by using a diagnostic scanner to retrieve the specific DTC. Research the code to understand its meaning and potential causes. Inspect the related components and wiring for any signs of damage or corrosion. Use a multimeter to check for proper voltage and continuity. If necessary, replace faulty components and clear the DTC to see if the issue is resolved. For complex issues, it may be best to consult a professional technician.
3. The Importance of Addressing ‘B’ Codes Promptly
Addressing ‘B’ codes promptly is essential for maintaining the safety, comfort, and convenience of your vehicle. Ignoring these codes can lead to several negative consequences:
- Compromised Safety: Issues with the airbag system, seatbelts, or lighting can compromise the safety of the occupants in the event of a collision.
- Reduced Comfort: Malfunctions in the climate control system, entertainment system, or power windows can reduce the comfort and enjoyment of the driving experience.
- Increased Repair Costs: Small issues can escalate into more significant problems if left unaddressed, leading to higher repair costs down the road.
- Vehicle Depreciation: Unresolved issues can negatively impact the vehicle’s resale value.
By addressing ‘B’ codes promptly, you can ensure the continued safety, comfort, and reliability of your vehicle, preserving its value and extending its lifespan.
4. Tools and Equipment for Diagnosing ‘B’ Codes
Diagnosing ‘B’ codes effectively requires the right tools and equipment. Here are some essential items to have on hand:
- Diagnostic Scanner: A diagnostic scanner is a must-have tool for retrieving DTCs from the vehicle’s computer. Choose a scanner that is compatible with your vehicle’s make and model and has the ability to read and clear DTCs.
- Multimeter: A multimeter is used to measure voltage, current, and resistance in electrical circuits. It is essential for diagnosing wiring issues and checking the functionality of electrical components.
- Wiring Diagrams: Wiring diagrams provide detailed information about the vehicle’s electrical system, including the location of components, wiring routes, and circuit layouts. They are invaluable for troubleshooting wiring issues.
- Repair Manual: A repair manual provides detailed instructions on how to diagnose and repair specific issues in your vehicle. It includes information on component locations, diagnostic procedures, and repair techniques.
- Basic Hand Tools: A set of basic hand tools, such as screwdrivers, pliers, wrenches, and sockets, is essential for disassembling and reassembling vehicle components.
With the right tools and equipment, you can effectively diagnose and resolve ‘B’ code issues, saving time and money on repairs.
5. Common Mistakes to Avoid When Diagnosing ‘B’ Codes
Diagnosing ‘B’ codes can be challenging, and it’s easy to make mistakes if you’re not careful. Here are some common mistakes to avoid:
- Ignoring the Basics: Always start with the basics, such as checking the battery voltage, fuses, and wiring connections. Many issues can be traced back to simple problems like a blown fuse or a loose connection.
- Relying Solely on the DTC: While DTCs provide valuable information, they don’t always tell the whole story. Always perform a thorough inspection of the related components and systems to identify the root cause of the problem.
- Failing to Research the Code: Before attempting any repairs, research the DTC to understand its meaning and potential causes. This will help you narrow down the possible causes and avoid wasting time on unnecessary repairs.
- Replacing Parts Without Testing: Don’t replace parts without first testing them to ensure they are faulty. Replacing parts unnecessarily can be costly and time-consuming.
- Neglecting Wiring Issues: Wiring issues are a common cause of ‘B’ codes. Always inspect the wiring for any signs of damage, corrosion, or loose connections.
By avoiding these common mistakes, you can improve your diagnostic accuracy and resolve ‘B’ code issues more efficiently.
6. Advanced Diagnostic Techniques for ‘B’ Codes
For complex ‘B’ code issues, advanced diagnostic techniques may be necessary. These techniques can help you pinpoint the root cause of the problem and avoid unnecessary repairs.
- Using a Scan Tool for Live Data: Many diagnostic scanners can display live data from the vehicle’s sensors and modules. This data can be invaluable for identifying intermittent issues or monitoring the performance of specific components.
- Performing Component Tests: Component tests involve using a diagnostic scanner to activate or deactivate specific components to verify their functionality. This can help you isolate faulty components and avoid unnecessary replacements.
- Using an Oscilloscope: An oscilloscope is a tool that displays electrical signals as waveforms. It can be used to analyze the signals from sensors and modules, helping you identify issues with signal integrity or timing.
- Performing Voltage Drop Tests: Voltage drop tests involve measuring the voltage drop across a circuit to identify areas of high resistance. This can help you locate corroded connections or damaged wiring.
- Using a Smoke Machine: A smoke machine is used to introduce smoke into a vehicle’s system to detect leaks. This can be helpful for identifying leaks in the intake system, exhaust system, or fuel system.
By mastering these advanced diagnostic techniques, you can tackle even the most challenging ‘B’ code issues with confidence.
7. Case Studies: Real-World ‘B’ Code Diagnostics
To further illustrate the process of diagnosing ‘B’ codes, let’s examine some real-world case studies:
7.1 Case Study 1: B1004 – Airbag System Fault
A customer reports that the airbag warning light is illuminated on their dashboard. A diagnostic scan reveals a B1004 code, indicating an airbag system fault. The technician begins by inspecting the airbag system components, including the airbag module, sensors, and wiring connections. They find a loose connection at one of the airbag sensors. After securing the connection and clearing the DTC, the airbag warning light turns off, and the system functions normally.
7.2 Case Study 2: B1007 – Window Lifter Fault
A customer complains that one of the power windows in their vehicle is not working. A diagnostic scan reveals a B1007 code, indicating a window lifter fault. The technician begins by checking the window switch and motor for proper operation. They find that the window motor is not receiving power. After inspecting the wiring, they discover a broken wire in the door harness. They repair the wire and the window now works.
7.3 Case Study 3: B1012 – Lighting System Fault
A customer reports that one of the headlights in their vehicle is not working. A diagnostic scan reveals a B1012 code, indicating a lighting system fault. The technician begins by checking the headlight bulb and fuse. They find that the headlight bulb is blown. After replacing the bulb, the headlight works.
These case studies demonstrate the importance of a systematic approach to diagnosing ‘B’ codes. By following a logical process and using the right tools and techniques, you can effectively resolve even the most challenging issues.
8. Mercedes-Benz Specific ‘B’ Codes:
Mercedes-Benz, known for its advanced technology and sophisticated systems, also utilizes specific ‘B’ codes that may not be found in other vehicle makes. These codes often relate to the unique comfort, convenience, and safety features that Mercedes-Benz vehicles offer. Here are some examples of Mercedes-Benz specific ‘B’ codes:
| Code | Description | Possible Causes |
|---|---|---|
| B1000 | Control Module Fault | Faulty control module, wiring issues, software problems |
| B1001 | ECU Internal Fault | Internal failure of the electronic control unit (ECU) |
| B1002 | System Configuration Error | Incorrect configuration settings, software incompatibility |
| B1003 | Security System Malfunction | Faulty security system components, wiring issues, key fob problems |
| B1004 | Airbag System Fault | Faulty airbag sensor, wiring issues, airbag module problems |
| B1005 | Restraint System Fault | Faulty seatbelt pretensioner, wiring issues, restraint system module problems |
| B1006 | Central Locking System Fault | Faulty door lock actuator, wiring issues, central locking module problems |
| B1007 | Window Lifter Fault | Faulty window motor, wiring issues, window switch problems |
| B1008 | Seat Adjustment Fault | Faulty seat motor, wiring issues, seat adjustment switch problems |
| B1009 | Mirror Adjustment Fault | Faulty mirror motor, wiring issues, mirror adjustment switch problems |
| B1010 | Wiper System Fault | Faulty wiper motor, wiring issues, wiper switch problems |
| B1011 | Washer System Fault | Faulty washer pump, wiring issues, washer switch problems |
| B1012 | Lighting System Fault | Faulty light bulb, wiring issues, lighting control module problems |
| B1013 | Interior Lighting Fault | Faulty interior light bulb, wiring issues, interior lighting control module problems |
| B1014 | Exterior Lighting Fault | Faulty exterior light bulb, wiring issues, exterior lighting control module problems |
| B1015 | Alarm System Fault | Faulty alarm siren, wiring issues, alarm control module problems |
| B1016 | Immobilizer System Fault | Faulty immobilizer transponder, wiring issues, immobilizer control module problems |
| B1017 | Key Recognition Fault | Faulty key fob, wiring issues, key recognition module problems |
| B1018 | Remote Control Fault | Faulty remote control transmitter, wiring issues, remote control receiver problems |
| B1019 | Sunroof System Fault | Faulty sunroof motor, wiring issues, sunroof switch problems |
| B1020 | Convertible Top System Fault | Faulty convertible top motor, wiring issues, convertible top switch problems |
| B1021 | Power Seat System Fault | Faulty power seat motor, wiring issues, power seat switch problems |
| B1022 | Power Mirror System Fault | Faulty power mirror motor, wiring issues, power mirror switch problems |
| B1023 | Power Window System Fault | Faulty power window motor, wiring issues, power window switch problems |
| B1024 | Power Door Lock System Fault | Faulty power door lock actuator, wiring issues, power door lock switch problems |
| B1025 | Heated Seat System Fault | Faulty heated seat element, wiring issues, heated seat switch problems |
| B1026 | Cooled Seat System Fault | Faulty cooled seat fan, wiring issues, cooled seat switch problems |
| B1027 | Steering Wheel Adjustment Fault | Faulty steering wheel motor, wiring issues, steering wheel adjustment switch problems |
| B1028 | Pedal Adjustment Fault | Faulty pedal motor, wiring issues, pedal adjustment switch problems |
| B1029 | Instrument Panel Lighting Fault | Faulty instrument panel bulb, wiring issues, instrument panel dimmer switch problems |
| B1030 | Headlamp Washer System Fault | Faulty headlamp washer pump, wiring issues, headlamp washer switch problems |
| B1031 | Rear Window Washer System Fault | Faulty rear window washer pump, wiring issues, rear window washer switch problems |
| B1032 | Wiper Park Position Fault | Faulty wiper motor, wiring issues, wiper park switch problems |
| B1033 | Wiper Speed Control Fault | Faulty wiper motor, wiring issues, wiper speed control switch problems |
| B1034 | Lighting Control Switch Fault | Faulty lighting control switch, wiring issues |
| B1035 | Door Ajar Switch Fault | Faulty door ajar switch, wiring issues |
| B1036 | Hood Ajar Switch Fault | Faulty hood ajar switch, wiring issues |
| B1037 | Trunk Ajar Switch Fault | Faulty trunk ajar switch, wiring issues |
| B1038 | Fuel Filler Door Ajar Switch Fault | Faulty fuel filler door ajar switch, wiring issues |
| B1039 | Glove Box Ajar Switch Fault | Faulty glove box ajar switch, wiring issues |
| B1040 | Ashtray Lighting Fault | Faulty ashtray bulb, wiring issues |
| B1041 | Cigarette Lighter Fault | Faulty cigarette lighter element, wiring issues |
| B1042 | Accessory Power Outlet Fault | Faulty accessory power outlet, wiring issues |
| B1043 | Navigation System Fault | Faulty navigation system module, wiring issues, GPS antenna problems |
| B1044 | Audio System Fault | Faulty audio system module, wiring issues, speaker problems |
| B1045 | Display Screen Fault | Faulty display screen, wiring issues |
| B1046 | Clock System Fault | Faulty clock module, wiring issues |
| B1047 | Compass System Fault | Faulty compass module, wiring issues |
| B1048 | Outside Temperature Sensor Fault | Faulty outside temperature sensor, wiring issues |
| B1049 | Inside Temperature Sensor Fault | Faulty inside temperature sensor, wiring issues |
| B1050 | Humidity Sensor Fault | Faulty humidity sensor, wiring issues |
| B1051 | Air Quality Sensor Fault | Faulty air quality sensor, wiring issues |
| B1052 | Rain Sensor Fault | Faulty rain sensor, wiring issues |
| B1053 | Light Sensor Fault | Faulty light sensor, wiring issues |
| B1054 | Parking Assist System Fault | Faulty parking sensor, wiring issues, parking assist module problems |
| B1055 | Blind Spot Detection System Fault | Faulty blind spot sensor, wiring issues, blind spot detection module problems |
| B1056 | Lane Departure Warning System Fault | Faulty lane departure sensor, wiring issues, lane departure warning module problems |
| B1057 | Adaptive Cruise Control System Fault | Faulty adaptive cruise control sensor, wiring issues, adaptive cruise control module problems |
| B1058 | Collision Avoidance System Fault | Faulty collision avoidance sensor, wiring issues, collision avoidance module problems |
| B1059 | Automatic Emergency Braking System Fault | Faulty automatic emergency braking sensor, wiring issues, automatic emergency braking module problems |
| B1060 | Pedestrian Detection System Fault | Faulty pedestrian detection sensor, wiring issues, pedestrian detection module problems |
| B1061 | Traffic Sign Recognition System Fault | Faulty traffic sign recognition sensor, wiring issues, traffic sign recognition module problems |
| B1062 | Driver Monitoring System Fault | Faulty driver monitoring sensor, wiring issues, driver monitoring module problems |
| B1063 | Seat Occupancy Detection System Fault | Faulty seat occupancy sensor, wiring issues, seat occupancy detection module problems |
| B1064 | Child Seat Detection System Fault | Faulty child seat sensor, wiring issues, child seat detection module problems |
| B1065 | Automatic High Beam Control System Fault | Faulty automatic high beam sensor, wiring issues, automatic high beam control module problems |
| B1066 | Cornering Light System Fault | Faulty cornering light, wiring issues, cornering light control module problems |
| B1067 | Ambient Lighting System Fault | Faulty ambient light, wiring issues, ambient lighting control module problems |
| B1068 | Welcome Lighting System Fault | Faulty welcome light, wiring issues, welcome lighting control module problems |
| B1069 | Footwell Lighting System Fault | Faulty footwell light, wiring issues, footwell lighting control module problems |
| B1070 | Door Handle Lighting System Fault | Faulty door handle light, wiring issues, door handle lighting control module problems |
| B1071 | Vanity Mirror Lighting System Fault | Faulty vanity mirror light, wiring issues, vanity mirror lighting control module problems |
| B1072 | Glove Box Lighting System Fault | Faulty glove box light, wiring issues, glove box lighting control module problems |
| B1073 | Trunk Lighting System Fault | Faulty trunk light, wiring issues, trunk lighting control module problems |
| B1074 | Reading Light System Fault | Faulty reading light, wiring issues, reading lighting control module problems |
| B1075 | Map Light System Fault | Faulty map light, wiring issues, map lighting control module problems |
| B1076 | Courtesy Light System Fault | Faulty courtesy light, wiring issues, courtesy lighting control module problems |
| B1077 | Entry Lighting System Fault | Faulty entry light |
