All OBD2 Diagnostic Codes
Browse our complete database of 16000 diagnostic trouble codes.
Airbag System Malfunction (B0000)
The airbag system has detected a malfunction or fault, which may prevent the airbags from deploying properly in the event of a crash.
Body System Code B0001: Climate Control Malfunction
A problem with the climate control system is causing issues with temperature control, air flow, or air quality.
Body System Code B0002: Door Locks Malfunction
This code indicates a malfunction in the door lock system, which may cause issues with locking or unlocking doors, or may prevent the doors from locking or unlocking properly.
Body System Code B0003: Windows
The B0003 code indicates a problem with the window regulator or motor, which may cause the window to malfunction or not function at all.
Seat Position Sensor Malfunction
The B0004 code indicates a malfunction in the seat position sensor, which monitors the position and movement of the vehicle's seats. This can cause issues with seat adjustment, airbag deployment, and other safety features.
Body System Code B0005: Lighting Malfunction
This code indicates a problem with the vehicle's lighting system, such as a faulty headlight, taillight, or turn signal.
Body System Code B0006 - Security
Body system diagnostic trouble code related to security functionality.
B0007: Audio System Malfunction
Code B0007 indicates a malfunction in the audio system, which may cause issues with sound quality, volume control, or display functionality.
Airbag System Fault - B0008
The airbag system has detected a fault, which may be due to a malfunctioning airbag sensor, wiring issue, or faulty airbag module.
B0009: Climate Control System Malfunction
This code indicates a malfunction in the climate control system, which may cause issues with temperature control, air flow, or fan operation.
Body System Code B0010: Door Locks Malfunction
This code indicates a problem with the door lock system, such as faulty actuators, wiring issues, or a malfunctioning body control module.
Body System Code B0011: Windows
The Body System Code B0011 indicates a malfunction in the window system, typically caused by a faulty window regulator, motor, or switch.
B0012: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately monitoring the seat's position and movement.
B0013: Turn Signal Indicator Malfunction
The B0013 code indicates a malfunction in the turn signal indicator circuit, which may cause the turn signal lights to malfunction or not function at all.
B0014: Body Control Module Security Malfunction
A security malfunction in the body control module can prevent the vehicle from starting or cause other security-related issues.
B0015: Audio System Malfunction
The B0015 code indicates a malfunction in the audio system, which can cause issues with sound quality, volume control, or radio reception.
Airbag System Fault - Driver's Side Front Airbag
The airbag system has detected a fault in the driver's side front airbag module, which may prevent the airbag from deploying in the event of a crash.
Body System Code B0017: Climate Control Malfunction
This code indicates a malfunction in the climate control system, which may cause issues with temperature, air flow, or fan operation.
B0018: Door Locks Malfunction
This code indicates a problem with the door lock system, such as faulty actuators, wiring issues, or a malfunctioning body control module.
B0019: Power Window Circuit Malfunction
The B0019 code indicates a problem with the power window circuit, which may cause the windows to malfunction or not function at all.
B0020: Seat Switch Circuit Malfunction
The B0020 code indicates a problem with the seat switch circuit, which controls the seat's position, recline, or lumbar support. This can cause the seat to malfunction or not function properly.
B0021: Malfunction Indicator Lamp (MIL) Circuit Malfunction
The B0021 code indicates a malfunction in the Malfunction Indicator Lamp (MIL) circuit, which is responsible for illuminating the 'Check Engine' light on the dashboard. This code is often caused by a faulty MIL bulb, wiring issue, or a problem with the dashboard warning light circuit.
B0022: Immobilizer System Malfunction
The B0022 code indicates a malfunction in the immobilizer system, which prevents the vehicle from starting. This can be caused by a faulty immobilizer module, a problem with the key fob, or a wiring issue.
B0023: Audio System Fault
This code indicates a malfunction in the audio system, such as a faulty amplifier, speaker, or wiring issue.
Body System Code B0024 - Airbag System
Body system diagnostic trouble code related to airbag system functionality.
Body System Code B0025 - Climate Control
Body system diagnostic trouble code related to climate control functionality.
B0026: Door Locks Malfunction
This code indicates a problem with the door lock system, such as faulty actuators, wiring issues, or a malfunctioning door lock module.
B0027: Window Regulator Malfunction
This code indicates a problem with the window regulator, which controls the movement of the window up and down. The regulator may be faulty, or there may be an issue with the window's electrical connection.
B0028: Seat Position Sensor Malfunction
The seat position sensor is not functioning correctly, causing issues with seat adjustment and potentially triggering airbag deployment.
B0029: Body System Code - Malfunctioning Headlight
The B0029 code indicates a malfunction in the headlight system, which may cause one or both headlights to be dim or not functioning properly.
B0030: Body System Security Malfunction
The B0030 code indicates a malfunction in the vehicle's security system, which may prevent the vehicle from starting or cause other security-related issues.
B0031: Audio System Malfunction
The B0031 code indicates a malfunction in the audio system, which may cause issues with sound quality, volume control, or other audio functions.
B0032: Airbag System Fault
The airbag system fault code B0032 indicates a malfunction in the airbag system, which may prevent the airbags from deploying in the event of a crash.
B0033: Climate Control Fan Motor Malfunction
The B0033 code indicates a malfunction in the climate control fan motor, which may cause the fan to stop working or operate intermittently.
B0034: Door Locks Actuator Malfunction
The B0034 code indicates a malfunction in the door lock actuator, which may cause issues with door locking and unlocking functions.
B0035: Power Window Relay Circuit Malfunction
The B0035 code indicates a problem with the power window relay circuit, which controls the operation of the windows. This can cause the windows to malfunction or fail to function properly.
B0036: Seat Position Sensor Malfunction
The seat position sensor has failed or is malfunctioning, causing the seat to malfunction or not function properly.
B0037: Exterior Lighting Malfunction
This code indicates a malfunction in the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B0038: Body System Security Malfunction
The B0038 code indicates a malfunction in the vehicle's security system, which can prevent the engine from starting or cause other issues.
B0039: Audio System Malfunction
This code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B0040: Airbag System Circuit Malfunction
The airbag system circuit has malfunctioned, preventing the airbags from deploying properly in the event of a crash.
B0041: Climate Control System Malfunction
The B0041 code indicates a malfunction in the climate control system, which may cause issues with temperature control, air flow, or fan operation.
B0042: Door Locks Actuator Malfunction
The body control module has detected a malfunction in the door lock actuator, preventing proper door lock operation. This code is often accompanied by symptoms such as doors not locking or unlocking properly, or a warning light on the dashboard.
B0043: Window Regulator Motor Malfunction
The B0043 code indicates a malfunction in the window regulator motor, which controls the movement of the window glass. This can cause the window to malfunction or fail to move properly.
B0044: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the seat from moving properly or triggering an airbag deployment.
B0045: Low Beam Headlight Relay Circuit Malfunction
The B0045 code indicates a problem with the low beam headlight relay circuit, which controls the low beam headlights. This code is usually set when the headlight relay fails or is stuck, preventing the low beam headlights from functioning properly.
B0046: 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.
B0047: Audio System Malfunction
The B0047 code indicates a malfunction in the audio system, such as faulty speakers, amplifier, or wiring issues.
B0048: Airbag System Malfunction
The airbag system has detected a malfunction, which may be due to a faulty sensor, wiring issue, or software problem.
B0049: Climate Control Temperature Sensor Malfunction
The B0049 code indicates that the climate control system has detected a malfunction in the temperature sensor, which is responsible for monitoring the temperature of the air entering the vehicle's cabin.