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🔧 B Codes Directory

Browse all OBDII B diagnostic trouble codes. Click any code to see meaning, symptoms, causes, diagnostics, repairs, and costs.

📋 All B Codes (300 codes)

Code Plain-language meaning Type Action
B0001 This code means there's a problem with the system that controls the first stage of the airbag for the driver. It's like when a balloon doesn't inflate properly when you need it to. Diagnostic Diagnose
B0002 This code means there's a problem with the airbag system in the car, specifically with the second stage of the driver's airbag. It's like a backup part of the airbag that might not work right now. Diagnostic Diagnose
B0003 This code means there's a problem with the airbag system in the car, specifically the part that controls how the driver's airbag deploys in a crash. Diagnostic Diagnose
B0004 This code means there's a problem with the part of the car that helps protect the driver's knees in a crash. Diagnostic Diagnose
B0005 This code means there's a problem with the part of the car that helps the steering wheel move safely during a crash. Diagnostic Diagnose
B0010 This code means there's a problem with the part of the car that controls the airbag on the passenger side, which might stop it from working correctly in an accident. Diagnostic Diagnose
B0011 This code means there's a problem with the car's airbag system, specifically the part that controls how the passenger's front airbag inflates. It might not work properly if the car crashes. Diagnostic Diagnose
B0012 This code means there's a problem with the airbag system on the passenger side of the car. It's like a safety balloon that might not work properly if there's a crash. Diagnostic Diagnose
B0013 This code means there's a problem with the part of the car that helps protect the passenger's knees during a crash. Diagnostic Diagnose
B0018 This code means that there is a problem with the car's airbag system, specifically the part that controls when the front airbag should go off in a crash. Diagnostic Diagnose
B0019 This code means there's a problem with the car's airbag system, specifically with the part that controls how the airbag inflates in a crash. Diagnostic Diagnose
B001A This code means there is a problem with the car's airbag system, specifically with the part that controls when the airbag in the middle front of the car should open up in case of a crash. Diagnostic Diagnose
B0020 This code means there's a problem with the system that controls the airbag on the left side of the car. It's like a warning that something might stop the airbag from working correctly if you get into an accident. Diagnostic Diagnose
B0021 This code means there's a problem with the airbag system on the left side of the car, specifically the curtain airbag which is meant to protect your head during a crash. Diagnostic Diagnose
B0022 This code means there's a problem with the airbag system on the left side of the car. It's like a safety pillow that might not work right. Diagnostic Diagnose
B0028 This code means there's a problem with the system that makes the airbag on the right side of the car go off in an accident. It's like if a toy's button is broken and it can't do what it's supposed to do. Diagnostic Diagnose
B0029 This code means there might be a problem with the airbag system on the right side of the car, specifically with the curtain airbag that would protect you in a side crash. Diagnostic Diagnose
B002A This code means there's a problem with the part of the car that controls the airbag on the right side. It's like a safety pillow that pops out if you get in a crash, and something is wrong with its control system. Diagnostic Diagnose
B0030 This code means there's a problem with the airbag on the left side of the second row of seats in your car. It's not working right, and it might not go off in an accident. Diagnostic Diagnose
B0031 This code means there's a problem with the airbag system for the left side of the second row of seats in your car. It's like a safety cushion that might not work right if you get into a crash. Diagnostic Diagnose
B0032 This code means there's a problem with the airbag system for the back seat on the left side of the car. It's like a safety balloon that might not work right if there's a crash. Diagnostic Diagnose
B0033 This code means there's a problem with the airbag system for the left side of the second row seats in a car. It might not work properly in an accident. Diagnostic Diagnose
B0038 This code means there's a problem with the airbag on the right side of the back seat. It's not working properly and might not inflate if there's an accident. Diagnostic Diagnose
B0039 This code means there's a problem with the airbag system in the back seat on the right side. The car's computer is having trouble with the part that controls when the airbag should go off in an accident. Diagnostic Diagnose
B003A This code means there's a problem with the airbag system for the second row of seats, specifically on the right side. The airbag might not work properly if there's an accident. Diagnostic Diagnose
B003B This code means that there's a problem with the airbag system for the seat on the right side of the second row in your car. It's like a special pillow that's supposed to pop out in an accident, but something is wrong with it, and it might not work when needed. Diagnostic Diagnose
B0040 This code means there's a problem with the airbag system in the back left seat of the car. The airbag might not work properly if there's an accident. Diagnostic Diagnose
B0041 This code means there's a problem with the airbag system for the third row of seats in your car. It's like a warning that the airbag might not work properly if needed. Diagnostic Diagnose
B0042 This code means there's a problem with the airbag system in the back of the car. It's like when a toy doesn't work right because a wire is loose. Diagnostic Diagnose
B0043 This code means there's a problem with the airbag system in the back left seat of the car. It might not work properly in a crash. Diagnostic Diagnose
B0048 This code means there's a problem with the airbag system for the third row of seats on the right side of the car. It's like a safety cushion that might not work properly if there's an accident. Diagnostic Diagnose
B0049 This code means there's a problem with the airbag system for the seat in the third row on the right side. It's like a safety cushion that might not work right if there's a crash. Diagnostic Diagnose
B004A This code means there's a problem with the part of the car that controls the airbag for the third row of seats on the right side. It's like a safety cushion that might not work properly in a crash. Diagnostic Diagnose
B004B This code means there's an issue with the airbag system for the third row of seats in your car. It's like a safety balloon that might not work properly if you have a crash. Diagnostic Diagnose
B0050 This code means there's a problem with the sensor that checks if the driver's seat belt is buckled. It's like a light that tells you if your seat belt is on or off is not working right. Diagnostic Diagnose
B0051 This code means there's a problem with the sensor that checks if the seat belt in the middle of the front row is being used. Diagnostic Diagnose
B0052 This code means there's a problem with the sensor that tells the car if the passenger seat belt is buckled or not. Diagnostic Diagnose
B0053 This code means there's a problem with the sensor that checks if the seat belt is buckled in the second row on the left side of the car. Diagnostic Diagnose
B0054 This code means there's a problem with the sensor that checks if the middle seat belt in the back row is being used. Diagnostic Diagnose
B0055 This code means there's a problem with the sensor that checks if the seat belt is being used in the second row on the right side of the car. Diagnostic Diagnose
B0056 This code means there's a problem with the sensor that checks if the seat belt is fastened in the third row of seats on the left side of the car. Diagnostic Diagnose
B0057 This code means there's a problem with the sensor that checks if the middle seat belt in the third row of seats is working properly. Diagnostic Diagnose
B0058 This code means there's a problem with the sensor that checks if the seat belt is fastened in the third row on the right side of the car. Diagnostic Diagnose
B0060 This code means there is a problem with the sensor that checks how tight the driver's seat belt is. It's like when your seat belt doesn't feel right, and the car's computer notices it. Diagnostic Diagnose
B0061 This code means there's a problem with the sensor that checks if the passenger seat belt is tight enough. It's like having a watchful eye that makes sure the seat belt is working properly. Diagnostic Diagnose
B0070 This code means there's a problem with the part of the car that tightens the driver's seat belt really fast during a crash to keep you safe. Diagnostic Diagnose
B0071 This code means there's a problem with the part of the car that helps tighten the seatbelt in the middle front seat during a crash to keep you safe. Diagnostic Diagnose
B0072 This code means there is a problem with the part of the car that tightens the seatbelt during a crash to keep you safe. Diagnostic Diagnose
B0073 This code means there's a problem with the seat belt system in the back seat on the left side. It's not working right and might not keep you safe in a crash. Diagnostic Diagnose
B0074 This code means there's a problem with the part of the car that tightens the seatbelt in the middle seat of the second row during an accident. Diagnostic Diagnose
B0075 This code means there's a problem with the seatbelt in the back right seat of the car. It's not working like it should to keep you safe in an accident. Diagnostic Diagnose
B0076 This code means there's a problem with the safety system that helps tighten the seat belt in the back left seat of the car if there's a crash. Diagnostic Diagnose
B0077 This code means there's a problem with the part of the car that tightens the seatbelt in the middle seat of the third row during a crash. Diagnostic Diagnose
B0078 This code means there's a problem with the seat belt in the back row on the right side of the car. The special part that makes the seat belt tighten quickly in a crash isn't working right. Diagnostic Diagnose
B0079 This code means there's a problem with the part of the car that helps tighten your seatbelt quickly in an accident. It's like when a superhero quickly grabs you to keep you safe. Diagnostic Diagnose
B007A This code means there's a problem with the part of the car that tightens the seat belt for the front passenger in case of an accident. It's like the car's way of making sure the seat belt is ready to protect you. Diagnostic Diagnose
B007B This code means there's a problem with the part that tightens the seatbelt on the left side in the second row of seats. It's like a safety feature that helps keep you safe in a crash. Diagnostic Diagnose
B007C This code means there's a problem with the seat belt system in the back seat on the right side of the car. The part that tightens the seat belt in an accident might not work properly. Diagnostic Diagnose
B007D This code means there's a problem with the seat belt in the middle of the back seat. The car has a special part that tightens the seat belt in a crash, and it's not working right. Diagnostic Diagnose
B007E This code means there's a problem with the part of the car that tightens the driver's seat belt during a crash to keep you safe. Diagnostic Diagnose
B007F This code means there's a problem with the part of the car that makes the passenger seat belt tighten quickly in an accident. It's like a safety feature that isn't working right now. Diagnostic Diagnose
B0080 This code means there's a problem with the part of the car that controls the seat belt's special safety feature. This feature helps to make sure the seat belt doesn't hurt you if you stop suddenly. Diagnostic Diagnose
B0081 This code means there's a problem with the part of the car that helps control how tight the middle seatbelt in the front row gets during a crash. Diagnostic Diagnose
B0082 This code means there's a problem with the part of the car that controls how tight the passenger seat belt gets in a crash. Diagnostic Diagnose
B0083 This code means there's a problem with the safety system that controls how tight the seatbelt gets in the back seat on the left side during a crash. Diagnostic Diagnose
B0084 This code means there's a problem with the part of the car that controls how tight the seatbelt gets in the middle seat of the second row when there's a crash. Diagnostic Diagnose
B0085 This code means there's a problem with the seat belt system in the back seat on the right side of the car. It's not working properly to protect you in case of an accident. Diagnostic Diagnose
B0086 This code means there's a problem with the safety feature that controls how the seat belt in the third row on the left side works during a crash. Diagnostic Diagnose
B0087 This code means there might be a problem with the safety system that controls how tight the seat belt gets in the middle seat of the third row in a car. Diagnostic Diagnose
B0088 This code means there's a problem with the part of the car that helps control how tight the seatbelt gets in the third row, right side, during a crash. Diagnostic Diagnose
B0090 This code means there's a problem with the sensor that helps control the airbag on the left side of the car. It's like a safety sensor that makes sure the airbag works right if there's a crash. Diagnostic Diagnose
B0091 This code means that there is a problem with a sensor that helps control the airbags on the left side of the car. It's like a sensor that tells the car when to make the airbag pop out, and it's not working right. Diagnostic Diagnose
B0092 This code means there's a problem with a sensor that helps control the airbags on the left side of the car. It's like a safety helper that isn't working right. Diagnostic Diagnose
B0093 This code means that there's a problem with one of the sensors that helps the car know if someone is sitting on the left side and if the seatbelt is working properly. Diagnostic Diagnose
B0094 This code means that the computer in your car found a problem with a sensor that helps control the airbags in the front of the car. Diagnostic Diagnose
B0095 This code means there's a problem with a sensor in the car that helps the airbags know when to go off. It's like a safety switch that might not be working right. Diagnostic Diagnose
B0096 This code means there's a problem with a sensor on the right side of the car that helps control the airbags. It's like a safety sensor that isn't working right. Diagnostic Diagnose
B0097 This code means that there's a problem with the sensor that helps the car know if someone is sitting on the right side. This sensor is part of the safety system that helps the airbags work properly. Diagnostic Diagnose
B0098 This code means that there's a problem with one of the sensors on the right side of the car that helps the airbags work properly. Think of it like a part of the car's safety system that isn't talking to the computer correctly. Diagnostic Diagnose
B0099 This code means there's a problem with the car's sensor that helps detect if the car is about to tip over. Diagnostic Diagnose
B009A This code means there's a problem with a safety sensor on the left side of the car. The sensor helps control the airbags and seatbelts to keep you safe in an accident. Diagnostic Diagnose
B009B This code means there's a problem with a sensor on the left side of the car that helps the airbags work properly. Diagnostic Diagnose
B009C This code means there's a problem with a sensor on the left side of the car that helps control the airbags. Diagnostic Diagnose
B009D This code means that there's a problem with one of the sensors on the right side of the car that helps the airbags know when to go off. It's like a sensor that tells the car when to use the safety pillow (airbag) isn't working right. Diagnostic Diagnose
B009E This code means there's a problem with a sensor that helps your car's airbag system on the right side. It's like a safety sensor that might not be working right. Diagnostic Diagnose
B009F This code means there's a problem with a sensor on the right side of the car that helps control the airbags. It's like when a toy's battery is low and it doesn't work right. Diagnostic Diagnose
B00A0 This code means there's a problem with the system in your car that tells if someone is sitting in the passenger seat. It's like when your computer can't tell if your mouse is connected. Diagnostic Diagnose
B00A1 This code means there's a problem with the car's system that detects where people are sitting. It's like when your video game can't find the controller. Diagnostic Diagnose
B00B0 This code means that the car's computer is having trouble with the sensor that tells if someone is sitting in the driver's seat. It's like when a chair can't tell if someone is sitting on it or not. Diagnostic Diagnose
B00B1 This code means there's a problem with a sensor in the driver's seat that helps the car know if someone is sitting there. It's like when your computer mouse isn't working right. Diagnostic Diagnose
B00B2 This code means there's a problem with a sensor in the driver's seat that helps the car understand if someone is sitting there. It's like the car's way of knowing if it should turn on the airbag for the driver. Diagnostic Diagnose
B00B3 This code means there's a problem with the sensor in the driver's seat that helps the car know if someone is sitting there. Diagnostic Diagnose
B00B4 This code means there's a problem with a sensor in the driver's seat that helps the car know if someone is sitting there. Diagnostic Diagnose
B00B5 This code means there is a problem with the sensor that tells the car where the driver's seat is positioned. This sensor helps the car's safety features work properly. Diagnostic Diagnose
B00B6 This code means there's a problem with the sensor that tells the car how much the driver's seat is tilted back. It's important for safety features like airbags. Diagnostic Diagnose
B00B7 This code means there's a problem with a sensor in the driver's seat that helps the car know if someone is sitting there and how they are sitting. Diagnostic Diagnose
B00B8 This code means that the car's computer is having trouble with a sensor that tells it where the driver is sitting. It's like when your game console can't find the controller. Diagnostic Diagnose
B00B9 This code means there's a problem with a sensor in the driver's seat that helps the car know where the driver is sitting. It's like when your video game controller isn't working right, so the game doesn't know what you're trying to do. Diagnostic Diagnose
B00BA This code means that the car's computer is having trouble understanding where the driver is sitting. It's like when a game can't figure out where your character is on the screen. Diagnostic Diagnose
B00BB This code means there's a problem with a sensor in the driver's seat that helps the car know where the driver is sitting. This is important for things like airbags to work properly. Diagnostic Diagnose
Showing page 1 of 3 (300 total codes)
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