All OBD2 Diagnostic Codes
Browse our complete database of 16000 diagnostic trouble codes.
B1000: Airbag System Malfunction
The airbag system has malfunctioned, preventing the airbags from deploying in the event of a crash. This code indicates a problem with the airbag system's electrical circuitry.
B1001: Climate Control System Fault
The B1001 code indicates a fault in the climate control system, which may cause issues with temperature control, air flow, or fan operation.
B1002: Door Locks Malfunction
This code indicates a problem with the door lock system, possibly due to a faulty actuator, wiring issue, or faulty door lock switch.
B1003: Power Window Circuit Malfunction
The B1003 code indicates a problem with the power window circuit, which controls the movement of the windows. This can cause the windows to malfunction or not function at all.
B1004: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position. This can cause issues with seat adjustments, airbag deployment, and other safety features.
B1005: Malfunctioning Headlight or Taillight
This code indicates a problem with the headlight or taillight circuit, such as a faulty bulb, wiring issue, or relay malfunction.
B1006: Immobilizer System Malfunction
The immobilizer system, which prevents the engine from starting without the correct key, has malfunctioned. This code indicates a problem with the system's communication or authentication process.
B1007: Audio System Malfunction
The B1007 code indicates a malfunction in the audio system, such as a faulty amplifier, speaker, or wiring issue.
B1008: Airbag System Fault
The B1008 code indicates a fault in the airbag system, possibly due to a wiring issue, faulty sensor, or malfunctioning airbag module.
B1009: Climate Control System Malfunction
The B1009 code indicates a malfunction in the climate control system, which may cause issues with temperature control, air flow, or fan operation.
B1010: Door Locks Malfunction
The B1010 code indicates a problem with the door lock system, which may prevent the doors from locking or unlocking properly.
B1011: Power Window Circuit Malfunction
The B1011 code indicates a malfunction in the power window circuit, which can cause windows to malfunction or not function at all.
B1012: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position, which can cause issues with seat adjustments and potentially affect airbag deployment.
B1013: Malfunction Indicator Lamp (MIL) Circuit Malfunction
The B1013 code indicates a malfunction in the Malfunction Indicator Lamp (MIL) circuit, which is responsible for illuminating the 'check engine' light on the dashboard.
B1014: Body System Security Malfunction
The B1014 code indicates a malfunction in the vehicle's body system security module, which is responsible for controlling various security-related functions such as door locks, alarm systems, and immobilizers.
B1015: Audio System Malfunction
The B1015 code indicates a malfunction in the audio system, which may cause issues with sound quality, volume control, or other audio functions.
B1016: Airbag System Malfunction
The airbag system has detected a malfunction, which may be due to a faulty sensor, wiring issue, or a problem with the airbag module itself.
B1017: Climate Control System Malfunction
The B1017 code indicates a malfunction in the climate control system, such as faulty sensors, clogged air ducts, or issues with the blower motor.
B1018: Door Locks Actuator Malfunction
The B1018 code indicates a problem with the door lock actuator, which may be faulty or stuck, preventing proper door lock operation.
B1019: Power Window Circuit Malfunction
The B1019 code indicates a problem with the power window circuit, which may cause one or more windows to malfunction or not function at all.
B1020: Seat Adjuster Motor Malfunction
The seat adjuster motor is malfunctioning, preventing the seat from moving properly. This code is typically set when the seat is stuck or not moving as intended.
B1021: Body System Code - Lighting Malfunction
This code indicates a malfunction in the vehicle's lighting system, such as a faulty headlight, taillight, or brake light.
B1022: Body System Security Malfunction
The B1022 code indicates a malfunction in the vehicle's security system, which may cause issues with door locks, alarm systems, or other security-related functions.
B1023: Audio System Fault
The B1023 code indicates a problem with the audio system's communication with the vehicle's body control module.
B1024: Airbag System Fault
The airbag system has detected a fault, which may be due to a faulty sensor, wiring issue, or malfunctioning airbag module.
B1025: Climate Control Temperature Sensor Malfunction
This code indicates a malfunction in the climate control temperature sensor, which regulates the air temperature in the vehicle. The sensor may be faulty, dirty, or malfunctioning, causing the climate control system to malfunction.
B1026: Door Locks Malfunction
The B1026 code indicates a problem with the door lock system, preventing the doors from locking or unlocking properly.
B1027: Power Window Circuit Malfunction
The B1027 code indicates a problem with the power window circuit, which may be caused by a faulty window switch, wiring issue, or faulty window motor.
B1028: Seat Switch Circuit Malfunction
The B1028 code indicates a problem with the electrical circuit controlling the seat switch, which may cause issues with seat adjustment, locking, or unlocking.
B1029: Body System Code - Malfunctioning Exterior Lighting
This code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal. The code may also be triggered by a faulty wiring harness or a malfunctioning body control module.
B1030: Immobilizer System Malfunction
The immobilizer system, which prevents the vehicle from starting without the correct key, has malfunctioned. This code indicates a problem with the immobilizer system's communication with the vehicle's computer.
B1031: Audio System Malfunction
The B1031 code indicates a malfunction in the audio system, likely due to a faulty amplifier, speaker, or wiring issue.
B1032: Airbag System Fault
This code indicates a fault in the airbag system, which can prevent the airbags from deploying in the event of a crash. This can be due to a faulty sensor, wiring issue, or software problem.
B1033: Climate Control Malfunction
This code indicates a malfunction in the climate control system, which may cause issues with temperature regulation, air flow, or other climate control functions.
B1034: Door Locks Actuator Malfunction
The B1034 code indicates a malfunction in the door lock actuator, which prevents the door locks from functioning properly.
B1035: Power Window Relay Circuit Malfunction
This code indicates a problem with the power window relay circuit, which controls the operation of the windows. The circuit may be faulty, or there may be an issue with the relay itself or the wiring.
B1036: Seat Switch Circuit Malfunction
The B1036 code indicates a malfunction in the seat switch circuit, which controls the operation of the vehicle's seats. This can cause issues with seat movement, locking, or unlocking.
B1037: Body System Code - Lighting Malfunction
This code indicates a problem with the vehicle's lighting system, such as a faulty headlight, taillight, or brake light.
B1038: Immobilizer System Malfunction
The immobilizer system has malfunctioned, preventing the vehicle from starting or running. This code is often triggered by a faulty immobilizer key fob, a damaged or worn-out key, or a problem with the immobilizer system's wiring or components.
B1039: Audio System Malfunction
The B1039 code indicates a malfunction in the audio system, which may cause issues with sound quality, volume control, or radio functionality.
B1040: Airbag System Fault
The airbag system has detected a fault, which may prevent the airbags from deploying in the event of a crash.
B1041: Climate Control Temperature Sensor Malfunction
The B1041 code indicates a malfunction in the climate control temperature sensor, which is responsible for monitoring the temperature in the vehicle. This can cause the air conditioning and heating systems to malfunction or not function properly.
B1042: Door Locks Actuator Malfunction
The B1042 code indicates a malfunction in the door lock actuator, which is responsible for locking and unlocking the doors. This can cause the doors to malfunction, preventing them from locking or unlocking properly.
B1043: Power Window Circuit Malfunction
The B1043 code indicates a problem with the power window circuit, which may cause one or more windows to malfunction or not function at all.
B1044: Seat Switch Circuit Malfunction
The B1044 code indicates a malfunction in the seat switch circuit, which controls the seat's position, recline, or lumbar support functions.
B1045: Turn Signal or Hazard Light Malfunction
This code indicates a problem with the turn signal or hazard light system, which may be due to a faulty switch, bulb, or wiring issue.
B1046: Immobilizer System Malfunction
The immobilizer system has detected a malfunction, preventing the engine from starting. This code is usually related to issues with the immobilizer key fob, antenna, or receiver.
B1047: Audio System Malfunction
This code indicates a problem with the audio system's amplifier or speaker circuit, causing no sound or distorted sound from the speakers.
B1048: Airbag System Malfunction
This code indicates a problem with the airbag system, such as a faulty sensor or wiring issue, which prevents the airbags from deploying properly in the event of a crash.
B1049: Climate Control Fan Motor Fault
The B1049 code indicates a fault in the climate control fan motor circuit, which may cause issues with air flow and temperature regulation.