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🔧 C Codes Directory

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

📋 All C Codes (761 codes)

Code Plain-language meaning Type Action
C0001 This code means there's a problem with a part of the car that helps prevent the wheels from slipping when you drive. It's like a helper for the car to keep it steady on the road. Diagnostic Diagnose
C0002 This code means that there's a problem with a part of the car that helps keep the wheels from slipping. It's like when you're walking on ice and you need to keep your balance. Diagnostic Diagnose
C0003 This code means there's a problem with a part of the car that helps prevent the wheels from slipping. It's like when you try to run on a slippery floor and need special shoes to stop you from falling. Diagnostic Diagnose
C0004 This code means there's a problem with a part of the car that helps keep it from slipping when driving. It's like if your shoes didn't have enough grip and you kept slipping on the floor. Diagnostic Diagnose
C0010 This code means there's a problem with the part of the car that controls how much air goes into the left front brake. It's like if your toy car's brakes weren't working right because air wasn't getting to the right place. Diagnostic Diagnose
C0011 This code means there's a problem with the part of the car that controls the brakes on the front left wheel. It's like if your bike's front brake handle was stuck or not working right. Diagnostic Diagnose
C0012 This means that the car's computer has detected that it takes too long for the left front brake to release when you take your foot off the brake pedal. Diagnostic Diagnose
C0014 This code means there's a problem with the car's system that controls the right front brake. It's like when a toy's wheel doesn't stop spinning because the brake isn't working right. Diagnostic Diagnose
C0015 This code means there's a problem with the part of the car that controls air coming out on the right front side, like the air vents not working properly. Diagnostic Diagnose
C0016 The car's computer thinks it takes too long for the brakes on the front right wheel to let go after you stop pressing the brake pedal. Diagnostic Diagnose
C0018 This code means there's a problem with the part of the car that controls how much air goes into the left rear wheel's braking system. Diagnostic Diagnose
C0019 This code means there's a problem with the part of the car that controls the air going to the back left seat. It's like when a fan at home doesn't blow air where you want it to. Diagnostic Diagnose
C001A This code means that something is taking too long to stop the brakes on the back left wheel of the car. Diagnostic Diagnose
C001C This code means there's a problem with the part of the car that controls the air going into the right back wheel area. It's like when a door doesn't open properly because something is stuck. Diagnostic Diagnose
C001D This code means there's a problem with the car's system that controls the flow of air or fluid to the back right part of the car. Diagnostic Diagnose
C001E The car is taking too long to release the brakes on the back right wheel. Diagnostic Diagnose
C0020 This code means there's a problem with the part of the car that helps stop the wheels from locking up when you brake hard. It's like a helper for your brakes, and it's not working right. Diagnostic Diagnose
C0021 This code means that the part of the car that helps you press the brakes easily isn't working well. It's like when you use a bicycle pump and it doesn't push air smoothly. Diagnostic Diagnose
C0022 This code means there's a problem with a part in your car that helps make braking easier. It's like having a helper that makes pushing the brake pedal softer, and it's not working right. Diagnostic Diagnose
C0023 This code means there's a problem with the car's brake lights. They might not be turning on when you press the brake pedal. Diagnostic Diagnose
C0024 This code means there's a problem with a part of the car that helps the brakes work properly. It's like when a video game controller button doesn't work right. Diagnostic Diagnose
C0025 This code means that the car's computer is having trouble understanding the pressure being applied to the brake pedal. It's like when you try to press a button, but the button doesn't tell the computer how hard you're pressing it. Diagnostic Diagnose
C0030 This code means there's a problem with the part of the car that helps measure how fast the left front wheel is spinning. Diagnostic Diagnose
C0031 This code means that the car's computer is having trouble getting information from the sensor on the left front wheel that tells it how fast the wheel is spinning. Diagnostic Diagnose
C0032 This code means there's a problem with the sensor that tells the car how fast the front left wheel is spinning. It's like when your bicycle's speedometer isn't working right. Diagnostic Diagnose
C0033 This code means there's a problem with a special wheel that helps the car know how fast the right front wheel is spinning. Diagnostic Diagnose
C0034 This code means there's a problem with the sensor that measures how fast the right front wheel is spinning. It's like when your bike's speedometer isn't working right. Diagnostic Diagnose
C0035 This code means there's a problem with the sensor that tells the car how fast the front right wheel is spinning. Diagnostic Diagnose
C0036 The car's computer is having trouble reading the wheel speed from the back left wheel. It's like when a bicycle's speedometer can't tell how fast you're going because something's wrong with the sensor on the wheel. Diagnostic Diagnose
C0037 This code means there is a problem with the sensor that tells the car how fast the left back wheel is spinning. Diagnostic Diagnose
C0038 This code means there is a problem with the sensor that tells the car how fast the left back wheel is spinning. Diagnostic Diagnose
C0039 This code means there's a problem with the right back wheel's sensor that helps the car know how fast the wheel is spinning. Diagnostic Diagnose
C003A This code means there's a problem with the sensor that tells the car how fast the right back wheel is spinning. Diagnostic Diagnose
C003B This code means there's a problem with the sensor that tells the car how fast the back right wheel is spinning. Diagnostic Diagnose
C003C The car's computer is having trouble reading the spinning wheel at the back of the car, which helps it know how fast the car is going. Diagnostic Diagnose
C003D This code means there's a problem with the sensor that tells the car how fast the back wheels are spinning. Diagnostic Diagnose
C003E The car's computer is having trouble getting information from the sensor that tells how fast the back wheel is spinning. Diagnostic Diagnose
C003F This code means that the car's computer is confused about which way the wheels are turning. It's like if you were trying to figure out if a toy car is going forward or backward, but the signals are mixed up. Diagnostic Diagnose
C0040 This code means there's a problem with the switch that tells the car when you press the brake pedal. It's like a light switch that might not be working right. Diagnostic Diagnose
C0041 This code means that the car's computer has detected a problem with the switch that tells it when you press the brake pedal. Diagnostic Diagnose
C0042 This code means there's a problem with the sensor that tells the car's computer where the brake pedal is. It's like when a light switch doesn't work because the wires are loose. Diagnostic Diagnose
C0043 This code means there's a problem with the sensor that tells the car's computer where the brake pedal is. It's like when a toy car's remote control doesn't know if you're pressing the stop button. Diagnostic Diagnose
C0044 This code means there's a problem with a sensor that checks how hard you're pressing the brake pedal. Diagnostic Diagnose
C0045 This code means that the car's computer found something wrong with a sensor that helps measure how hard you are pressing the brake pedal. Diagnostic Diagnose
C0046 This code means there's a problem with the sensor that tells the car how hard you're pressing the brakes. It's like when a video game controller button gets stuck and doesn't work right. Diagnostic Diagnose
C0047 This code means there's a problem with the sensor that helps the car know how hard you're pressing the brake pedal. Diagnostic Diagnose
C0048 This code means that the car's computer has detected a problem with the sensor that checks how far the brake booster moves when you press the brake pedal. It's like a sensor that makes sure the brakes are working properly. Diagnostic Diagnose
C0049 This code means that the car is detecting that the brake fluid, which helps the car stop, is too low. It's like when you need to refill your juice box because it's almost empty. Diagnostic Diagnose
C004A This code means that the car is telling you the brake pads might be getting too thin and need to be checked or replaced soon. Diagnostic Diagnose
C004B This code means that the car's computer is not getting a signal from the sensor that checks if there is enough brake fluid. It's like a light switch being turned off, so the car doesn't know if the brake fluid is okay. Diagnostic Diagnose
C004C This code means that the car's computer thinks the brake helper motor isn't in the right spot. It's like when a toy robot's arm doesn't move to where it's supposed to. Diagnostic Diagnose
C004D This means that the car's brakes aren't reacting as quickly as they should when you press the brake pedal. Diagnostic Diagnose
C004E The car's brake system has a part that helps control how much pressure is applied when you press the brake pedal. This part is stuck and not working right. Diagnostic Diagnose
C004F The car's computer that helps with braking is getting too hot. Diagnostic Diagnose
C0051 This code means there's a problem with the sensor that tells the car's computer which way the steering wheel is turned. Diagnostic Diagnose
C0052 This code means that the car's computer is having trouble understanding where the steering wheel is pointing. It's like when you're playing a video game and the controller doesn't know if you're turning left or right. Diagnostic Diagnose
C0053 This code means that the car's computer is having trouble understanding where the steering wheel is pointing. Diagnostic Diagnose
C0054 This code means that the car's computer is having trouble understanding the position of the steering wheel. It's like when you play a video game and the controller isn't working right, so your character doesn't move the way you want. Diagnostic Diagnose
C0055 This code means that the car's computer is having trouble understanding where the steering wheel is pointing. It's like if you were playing a video game and the controller wasn't telling the game which way you were turning. Diagnostic Diagnose
C0061 This code means there's a problem with the sensor that helps the car understand how fast it's turning left or right. It's like when you spin around and feel dizzy; the car needs this sensor to stay balanced. Diagnostic Diagnose
C0062 This code means there's a problem with a sensor in your car that helps measure how fast your car is speeding up or slowing down in a straight line. Diagnostic Diagnose
C0063 The car has a sensor that helps it know if it's turning or sliding. If this sensor isn't working right, the car might not be able to keep you safe when you're driving around corners. Diagnostic Diagnose
C0064 This code means there is a problem with a sensor in your car that helps it understand how much it's tilting or rolling, like when you go around a corner. Diagnostic Diagnose
C0065 This code means there's a problem with a sensor that helps the car understand how bumpy the road is. It's like when you jump on a trampoline, and the car needs to know how high you go. Diagnostic Diagnose
C0069 This code means there's a problem with the car's sensors that help it know if it's turning or moving forward correctly. Diagnostic Diagnose
C006A This code means that the car's computer is having trouble with a sensor that helps it understand how the car is moving in different directions. Diagnostic Diagnose
C006B This code means that the car's stability control system, which helps keep the car from skidding, has been working for too long. It's like when a superhero gets tired after saving the day for too long without a break. Diagnostic Diagnose
C006C This code means there's a problem with the car's system that helps keep it stable and not slip or slide when driving. Diagnostic Diagnose
C0071 This code means there's a problem with the system that tells the car if it's in 2-wheel drive or 4-wheel drive mode. It's like if a toy car couldn't decide if it should use two wheels or four wheels to move. Diagnostic Diagnose
C0072 This code means the car's brakes are getting too hot. It's like when you play outside and get really hot, you need to cool down. The brakes need to cool down too. Diagnostic Diagnose
C0073 This code means that your car's computer is having trouble understanding how much power is being sent to the wheels to make the car move. Diagnostic Diagnose
C0074 This code means that the car's computer is having trouble with how much power it wants the engine to give. It's like when you try to pedal a bike but can't decide how hard you should push. Diagnostic Diagnose
C0075 This code means that the car's computer is having trouble understanding how much you're pressing the brake pedal. Diagnostic Diagnose
C0076 This code means there's a problem with the system that helps your car keep from slipping on the road. It's like when you try to run on ice and need special shoes to keep from falling. Diagnostic Diagnose
C0077 One of your car's tires doesn't have enough air in it, which can make driving unsafe. Diagnostic Diagnose
C0078 This code means that the car's computer has detected a problem with the size of one or more tires. It's like if your shoes were suddenly too big or too small, and it made it hard to walk properly. Diagnostic Diagnose
C0079 This code means there's a problem with the part of the car that helps make steering easier at low speeds and firmer at high speeds. Diagnostic Diagnose
C0081 This code means that the car's system that helps prevent skidding when you brake is having a problem. Diagnostic Diagnose
C0082 This code means there's a problem with the brakes in your car. It's like a warning light telling you to check the brakes. Diagnostic Diagnose
C0083 This code means that the car's system that checks if the tires have enough air is not working right. It's like if your bicycle's tire pump gauge was broken and you couldn't tell if your tires were full or flat. Diagnostic Diagnose
C0084 This code means that the car's computer has turned on a light to show that the traction control system is working. Traction control helps your car not slip when the road is slippery. Diagnostic Diagnose
C0085 This code means that the car's computer has detected a problem with the light that shows if the traction control is turned off. It's like a warning light on a toy that tells you something isn't working right. Diagnostic Diagnose
C0086 This code means that the car's computer has detected a problem with the system that helps keep the car stable and safe when driving. It's like if the car's balance helper isn't working right. Diagnostic Diagnose
C0089 This code means there's a problem with the button or switch that turns off the car's traction control system. It's like when a light switch in your house doesn't work right. Diagnostic Diagnose
C008A This code means there's a problem with the car's system that helps prevent the wheels from slipping when you drive. It's like when you try to run on a slippery floor, and you need to be careful not to fall. Diagnostic Diagnose
C0090 This code means there's a problem with the part of the car that helps it switch between two-wheel drive and four-wheel drive. It's like a switch that isn't working right. Diagnostic Diagnose
C0091 This code means that the car's computer is having trouble understanding where a part of the 4-wheel drive system is located. It's like if you were playing a video game and the controller couldn't tell where the joystick was pointing. Diagnostic Diagnose
C0092 This code means that there's a problem with a sensor that helps the car know how to send power to all four wheels. It's like a helper that tells the car how to grip the road better, but it's not working right. Diagnostic Diagnose
C0093 This code means there's a problem with the sensor that checks how hot the part of the car that helps it drive all four wheels is getting. Diagnostic Diagnose
C0094 This code means that the sensor that checks the temperature of the rear differential (a part that helps your car's wheels turn at different speeds) is not working right. Diagnostic Diagnose
C0095 This code means there's a problem with the part of the car that helps the back wheels turn at different speeds, especially when the car is turning. It's like when one of your toy car's wheels gets stuck and doesn't spin right. Diagnostic Diagnose
C0096 This code means there's a problem with the part of the car that helps the wheels turn together when you're driving on slippery roads. It's like when one of your toy's wheels doesn't spin right. Diagnostic Diagnose
C0097 This code means there's a problem with a part in the car that helps the wheels move together when driving on slippery roads. Diagnostic Diagnose
C0098 This code means that the computer in your car is having trouble talking to a part that helps the wheels turn together when you drive over slippery stuff like snow or mud. Diagnostic Diagnose
C0099 This code means there's a problem with the sensor that tells the car's computer where the back wheels' special gear is. It's like if your toy car's wheels couldn't turn because something was stuck. Diagnostic Diagnose
C009A This code means that the car's computer thinks there's a problem with a sensor that helps control how the back wheels move in a 4-wheel drive or all-wheel drive car. Diagnostic Diagnose
C009B This code means there's a problem with a sensor that helps control how power is sent to the back wheels of a car that can drive all four wheels. It's like a part of the car that helps it know when to use all four wheels is not working right. Diagnostic Diagnose
C009C This code means that the car's computer is having trouble understanding the position of a part that helps the wheels turn together when driving on slippery roads. Diagnostic Diagnose
C009D This code means there's a problem with a sensor that helps control how the back wheels of a 4-wheel drive or all-wheel drive car work together. Diagnostic Diagnose
C009E This code means there's a problem with a sensor that helps your car know how the back wheels should move when using four-wheel drive. It's like if a toy car's wheels aren't turning the way they should because a part isn't working right. Diagnostic Diagnose
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