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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
B00C0 This code means there's a problem with the sensor that tells the car if someone is sitting in the passenger seat. It's like the car can't tell if there's a person there or not. Diagnostic Diagnose
B00C1 This code means there's a problem with the sensor that tells the car if someone is sitting in the passenger seat. It's like when a scale doesn't work and can't tell if something is on it. Diagnostic Diagnose
B00C2 This code means there's a problem with the sensor that tells the car if someone is sitting in the passenger seat. It's like when a weight scale doesn't work right and can't tell how much something weighs. Diagnostic Diagnose
B00C3 This code means there's a problem with a sensor in the passenger seat that helps the car know if someone is sitting there. Diagnostic Diagnose
B00C4 This code means there's a problem with the sensor in the passenger seat that helps the car know if someone is sitting there. It's like when your computer mouse isn't working right. Diagnostic Diagnose
B00C5 This code means there's a problem with the sensor that tells the car where the passenger seat is positioned. It's important for the airbags to work properly. Diagnostic Diagnose
B00C6 This code means there's a problem with the sensor that tells the car how the passenger seat is tilted back. It's important for safety features like airbags. Diagnostic Diagnose
B00C7 This code means there's a problem with the sensor that tells the car where someone is sitting in the passenger seat. It's like the car's way of knowing if someone is there or not. Diagnostic Diagnose
B00C8 This code means there's a problem with a sensor in the car seat that tells the car if someone is sitting there and where they are sitting. Diagnostic Diagnose
B00C9 This code means there's a problem with a sensor in the passenger seat that helps the car know where a person is sitting. It's like when your computer mouse stops working and you can't move the cursor. Diagnostic Diagnose
B00CA This code means there's a problem with a sensor in the front passenger seat that helps the car know if someone is sitting there. It's like when your phone doesn't know you're touching it because the screen is broken. Diagnostic Diagnose
B00CB This code means there's a problem with a sensor that helps the car know if someone is sitting in the front passenger seat. Diagnostic Diagnose
B00D0 This code means that the light or sound that tells you to buckle your seat belt isn't working right. Diagnostic Diagnose
B00D1 This code means that the light or signal that shows if the passenger seat belt is buckled is not working right. Diagnostic Diagnose
B00D2 This code means that there is a problem with the car's safety system, like the airbags or seatbelts, and it might not work properly if you get into an accident. Diagnostic Diagnose
B00D3 This code means there's a problem with the car's safety system, like the airbags or seatbelts, and a warning light might be on. Diagnostic Diagnose
B00D4 This code means there's a problem with the sound that warns you if your seatbelt isn't fastened or if there's an issue with the airbags. Diagnostic Diagnose
B00D5 This code means that the car's computer has detected a problem with the light or indicator that shows if the passenger airbag is turned off. It's like when a warning light on your toy stops working. Diagnostic Diagnose
B00DF This code means that there is a problem with the switch that turns off the passenger's airbag. It's like a light switch that isn't working right. Diagnostic Diagnose
B00E0 This code means there's a problem with the seat belt system in the back of the car, specifically on the left side. The special part that tightens the seat belt in an accident might not work correctly. Diagnostic Diagnose
B00E1 This code means there's a problem with the seat belt on the right side of the third row in your car. It's not working like it should to keep you safe in an accident. Diagnostic Diagnose
B00E2 This code means that there's a problem with the seatbelt in the back middle seat of the car. It's not working properly and might not protect you well in an accident. Diagnostic Diagnose
B00E3 This code means there's a problem with the part of the car that tightens the seat belt quickly in an accident to keep you safe. It's for the seat belt on the left side in the second row of seats. Diagnostic Diagnose
B00E4 This code means there's a problem with the seatbelt on the right side of the second row of seats in your car. The part that tightens the seatbelt in a crash might not work right. Diagnostic Diagnose
B00E5 This code means there's a problem with the seatbelt in the middle of the back seat. It's supposed to tighten up in a crash, but something's not working right. Diagnostic Diagnose
B00E6 This code means there's a problem with the seat belt in the third row on the right side of the car. It's supposed to tighten up in a crash to keep you safe, but something is wrong with it. Diagnostic Diagnose
B00E7 This code means there's a problem with the seat belt system in the back left seat of the car. The part that tightens the seat belt in an accident might not work properly. Diagnostic Diagnose
B00E8 This code means there's a problem with the safety system in the car, specifically with the seatbelt in the third row. It's like a special part of the seatbelt that helps keep you safe in a crash isn't working right. Diagnostic Diagnose
B00F0 This code means there is a problem with the special seat belt in the driver's seat that can inflate like an airbag to keep you safe during a crash. Diagnostic Diagnose
B00F1 This code means there's a problem with the special seat belt that can inflate like an airbag to protect passengers during a crash. Diagnostic Diagnose
B00F2 This code means there's a problem with the special seatbelt on the left side of the second row of seats in your car. This seatbelt can inflate like an airbag to keep you safe, but right now, it's not working properly. Diagnostic Diagnose
B00F3 This code means there's a problem with the special seat belt in the middle of the back seat that can inflate like an airbag to keep you safe. Diagnostic Diagnose
B00F4 This code means there's a problem with the system that makes the seat belt on the right side of the second row of seats inflate during a crash. It's like a special seat belt that can puff up to protect you more, and it's not working right. Diagnostic Diagnose
B00F5 This code means there's a problem with the special seat belt in the back of the car that can inflate like an airbag. It's not working right. Diagnostic Diagnose
B00F6 This code means there's a problem with the seat belt in the third row of seats in your car. It's the kind that can inflate like an airbag to keep you safe, and it's not working right. Diagnostic Diagnose
B00F7 This code means there's a problem with the special seat belt in the third row on the right side of the car. It's supposed to inflate like an airbag in a crash, but something isn't working right. Diagnostic Diagnose
B0100 This code means that the part of the car that helps clean the air sensor is not working right. It's like a tiny fan that blows air to keep things clean, and it's having trouble. Diagnostic Diagnose
B0101 This code means there's a problem with a part of the car that helps keep a sensor clean by blowing air on it. It's like a little fan that isn't working right. Diagnostic Diagnose
B0102 This code means that a part of your car that helps keep sensors clean isn't working right. It's like a fan that's supposed to blow air to clean things, but it's not doing its job. Diagnostic Diagnose
B0103 This code means there's a problem with a part that helps keep a sensor clean in your car. It's like when a fan that blows air to clean something isn't working right. Diagnostic Diagnose
B0104 This code means there's a problem with a part in your car that helps keep a sensor clean by blowing air on it. Think of it like a tiny fan that isn't working right. Diagnostic Diagnose
B0105 This code means there is a problem with the part of the car that helps clean a sensor using air. It's like when a fan that blows air to clean something stops working. Diagnostic Diagnose
B0106 This code means there's a problem with the part of the car that helps clean the sensor that helps it 'see' things around it. Diagnostic Diagnose
B0107 This code means there's a problem with the part of the car that cleans the LIDAR sensor, which helps the car 'see' its surroundings. Diagnostic Diagnose
B0108 This code means there's a problem with the part of the car that sprays water to clean the LIDAR sensor. It's like a windshield wiper for the car's eyes. Diagnostic Diagnose
B0109 This code means there's a problem with the part that helps clean the sensor on your car that uses light to see around it. Diagnostic Diagnose
B010A This code means there is a problem with the part of the car that sprays water to clean the camera. It's like when your squirt gun doesn't work right. Diagnostic Diagnose
B010B This code means there's a problem with the part of the car that sprays water to clean the camera. It's like when your water gun doesn't work because something is blocking it or it's broken. Diagnostic Diagnose
B010C This code means there's a problem with the part of the car that sprays water to clean the camera lens. Diagnostic Diagnose
B010D This code means there's a problem with the system that sprays water to clean a camera on your car. It's like when the windshield wipers can't spray water to clean the glass. Diagnostic Diagnose
B010E This code means there's a problem with the little machine that sprays water to clean the camera on your car. Diagnostic Diagnose
B010F This code means that the little sprayer that cleans the camera on your car isn't working right. Diagnostic Diagnose
B0110 This code means there's a problem with the little device that sprays water to clean the camera on your car. It's not working right. Diagnostic Diagnose
B0111 This code means there's a problem with the part of the car that cleans the camera. It's like when your window washer doesn't spray water to clean the window. Diagnostic Diagnose
B0112 This code means there's a problem with the part that sprays water to clean the camera on your car. Diagnostic Diagnose
B0113 This code means there's a problem with the part that sprays water to clean the camera on your car. Diagnostic Diagnose
B0114 This code means that the part of the car that sprays water to clean the camera on the left side is not working properly. Diagnostic Diagnose
B0115 This code means there is a problem with the part of the car that sprays water to clean the camera. It's like when your water gun gets clogged and can't spray water. Diagnostic Diagnose
B0116 This code means there's a problem with the part of the car that sprays water to clean the camera. It's like when your squirt gun doesn't work right. Diagnostic Diagnose
B0117 This code means there's a problem with the part of the car that sprays water to clean the camera. Diagnostic Diagnose
B0118 This code means there's a problem with the part that sprays water to clean the camera on your car. It's like when your squirt gun doesn't work right. Diagnostic Diagnose
B0119 This code means there's a problem with the little machine that sprays water to clean the camera on your car. Diagnostic Diagnose
B011A This code means that there's a problem with the little device that sprays water to clean the camera on the right side of the car. It's like when your water gun doesn't work properly. Diagnostic Diagnose
B011B This code means there's a problem with the part that sprays water to clean the camera on your car. It's like when your squirt gun stops working and can't spray water anymore. Diagnostic Diagnose
B011C This code means that the car's computer is having trouble reading how much fluid is in a certain reservoir, like the one for windshield wiper fluid or coolant. Diagnostic Diagnose
B011D This code means that the car's computer has detected a problem with a sensor that checks the level of fluid in a reservoir, like brake fluid or windshield washer fluid. Diagnostic Diagnose
B011E This code means that the car's computer is having trouble reading the level of a fluid, like oil or coolant, from a specific sensor. Diagnostic Diagnose
B011F This code means that the car's computer has detected a problem with the sensor that checks how much fluid is in a certain tank, like brake fluid or windshield washer fluid. Diagnostic Diagnose
B0120 This code means that the car's computer is having trouble reading the sensor that tells it how much fluid is in a certain tank, like the windshield wiper fluid tank. Diagnostic Diagnose
B0121 This code means there is a problem with the sensor that checks how much fluid is in a tank, like the one for windshield washer fluid or brake fluid. Diagnostic Diagnose
B0122 This code means that there's a problem with the speaker in the car that makes noise to alert people walking nearby. Diagnostic Diagnose
B0123 This code means there's a problem with one of the car's speakers that makes noise to warn people walking nearby. Diagnostic Diagnose
B0124 This code means that the special camera in your car that helps you see better at night is not working properly. Diagnostic Diagnose
B0125 This code means there's a problem with the part of the car that helps you see better at night using a special camera. Diagnostic Diagnose
B0126 This code means there's a problem with the camera that watches the driver to make sure they're paying attention. It's like when your phone's camera isn't working right. Diagnostic Diagnose
B0127 This code means there's a problem with the part of the car that changes electricity from one form to another, like when you plug in a phone charger. It's not working right. Diagnostic Diagnose
B0128 This code means there's a problem with the part of your car that changes electricity from one form to another, like a converter. It's like when a toy isn't working because the battery connection is loose or broken. Diagnostic Diagnose
B0129 This code means that there is a problem with the part of the car that changes electricity from one form to another. It's like when a toy stops working because the battery isn't connected properly. Diagnostic Diagnose
B012A This code means there's a problem with the part of the car that changes electricity from one type to another, and it's not working right. It's like when a toy needs batteries, but the battery compartment is broken. Diagnostic Diagnose
B012B This code means there's a problem with the car's power outlet system. It's like when a plug in your house doesn't work because the wire is broken or not connected. Diagnostic Diagnose
B012C This code means there's a problem with the part of the car that changes electricity from one form to another, like how a transformer works. It's not working right, so some electrical outlets in the car might not work. Diagnostic Diagnose
B012D This code means that something is wrong with the part of the car that changes electricity from one form to another, like how a phone charger works. It's not working right in a specific part called 'B'. Diagnostic Diagnose
B012E This code means there's a problem with a part of the car that helps power things like a plug for charging devices. It's like when your phone charger isn't working right. Diagnostic Diagnose
B012F This code means there's a problem with the car's system that controls the washer fluid for the cameras or sensors. It's like when your squirt gun gets clogged and doesn't spray water properly. Diagnostic Diagnose
B0130 This code means there's a problem with the part of the car that helps clean the windshield. It's like when your water gun doesn't spray water because something's wrong with the trigger. Diagnostic Diagnose
B0131 This code means there's a problem with the car's system that checks if there's enough washer fluid to clean the windshield. It's like a sensor that tells you when you need to add more washer fluid. Diagnostic Diagnose
B0132 This code means there's a problem with the car's system that tells it when the windshield washer fluid is low. It's like when your toy's battery is low, but the toy doesn't tell you. Diagnostic Diagnose
B0133 This code means there's a problem with the part of the car that checks if there's enough washer fluid to clean the windshield. It's like when your toy stops working because the battery is not connected properly. Diagnostic Diagnose
B0134 This code means there's a problem with the part of the car that controls the washer fluid sensor, which helps clean your windshield. Diagnostic Diagnose
B1317 This means that the car's battery is giving out too much power, kind of like when you have too many batteries in a toy and it goes too fast or might break. Diagnostic Diagnose
B1318 This code means that the car's computer is detecting that the battery doesn't have enough power. It's like when your flashlight's batteries are running low and the light gets dim. Diagnostic Diagnose
B1342 The computer that helps control your car is not working right. Diagnostic Diagnose
B1379 This code means there's a problem with the button that resets the oil change reminder in your car. It's like the button is stuck or broken. Diagnostic Diagnose
B1380 This code means that the button in your car that resets the oil change reminder is not working properly. Diagnostic Diagnose
B1381 This code means that the button you press to reset the oil change reminder in your car isn't working because there's a break in the electrical path. Diagnostic Diagnose
B1382 This code means there's a problem with the button that resets the oil change light. It's like the button is stuck or connected wrong. Diagnostic Diagnose
B2000 This code means there's a problem with a specific part of the car that the car maker has set up to monitor. It's like when your toy stops working and you don't know why, but you know something is wrong. Diagnostic Diagnose
B2200 The car's computer is trying to talk to the TV system, but it can't find it. It's like trying to call a friend who doesn't have a phone. Diagnostic Diagnose
B2201 This code means that the car's computer is having trouble talking to a part called the Traffic Master Module. It's like when your phone can't connect to the internet. Diagnostic Diagnose
B2202 The car's computer can't talk to a part called the VICS module. It's like trying to call a friend and not being able to reach them. Diagnostic Diagnose
Showing page 2 of 3 (300 total codes)
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