All OBD2 Diagnostic Codes
Browse our complete database of 16000 diagnostic trouble codes.
B2400: Airbag System Malfunction
The airbag system has detected a malfunction, which may be due to a faulty sensor, wiring issue, or software problem.
B2401: Climate Control Temperature Sensor Malfunction
The B2401 code indicates a malfunction in the climate control temperature sensor, which is responsible for monitoring the temperature of the air entering the vehicle's cabin.
B2402: Door Locks Actuator Circuit Malfunction
The B2402 code indicates a malfunction in the door locks actuator circuit, which can cause issues with door locking and unlocking functions.
B2403: Power Window Regulator Malfunction
The power window regulator is malfunctioning, preventing the window from moving properly.
B2404: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B2405: Turn Signal Lamp Malfunction
The B2405 code indicates a malfunction in the turn signal lamp circuit, which can cause the turn signal lights to malfunction or not function at all.
B2406: Immobilizer System Malfunction
The immobilizer system has detected a malfunction, preventing the engine from starting. This code is usually caused by a faulty immobilizer module, key fob, or wiring issue.
B2407: Audio System Fault
The B2407 code indicates a fault in the audio system, possibly due to a malfunctioning amplifier, speaker, or wiring issue.
B2408: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2409: Climate Control Actuator Malfunction
The B2409 code indicates a malfunction in the climate control system, specifically with the actuator that controls the temperature and airflow.
B2410: Body Control Module (BCM) Door Lock Actuator Circuit Malfunction
The Body Control Module (BCM) has detected a malfunction in the door lock actuator circuit, preventing proper door lock operation.
B2411: Power Window Circuit Malfunction
The B2411 code indicates a problem with the power window circuit, which may cause the windows to malfunction or not function at all.
B2412: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B2413: Exterior Lighting Malfunction
This code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B2414: Body Control Module (BCM) Security System Malfunction
The Body Control Module (BCM) has detected a security system malfunction, which may be caused by a faulty sensor, wiring issue, or software problem.
B2415: Audio System Malfunction
The B2415 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B2416: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2417: Climate Control Actuator Malfunction
The B2417 code indicates a malfunction in the climate control system, specifically with the actuator that controls the temperature and airflow.
B2418: Door Locks Actuator Malfunction
The B2418 code indicates a malfunction in the door lock actuator, which may cause the door locks to malfunction or not function at all.
B2419: Power Window Relay Circuit Malfunction
The power window relay circuit has malfunctioned, preventing the windows from functioning properly. This code is often accompanied by a warning light on the dashboard.
B2420: 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.
B2421: Body System Code for Malfunctioning Headlight
This code indicates a problem with the headlight circuit, which may cause the headlights to malfunction or not turn on.
B2422: Immobilizer System Malfunction
The immobilizer system has detected a malfunction, preventing the vehicle from starting. This code is typically set when the immobilizer system is not functioning correctly, preventing the vehicle from starting.
B2423: Audio System Fault
The B2423 code indicates a fault in the audio system, possibly due to a malfunctioning amplifier, speaker, or wiring issue.
B2424: Airbag System Circuit Short to Ground
The airbag system has detected a short circuit to ground in the wiring harness or electrical components.
B2425: Climate Control Fan Motor Malfunction
The B2425 code indicates a malfunction in the climate control fan motor, which may cause the fan to stop working or operate erratically.
B2426: Door Locks Actuator Circuit Malfunction
The door locks actuator circuit has malfunctioned, preventing the door locks from functioning properly.
B2427: Power Window Relay Circuit Malfunction
The power window relay circuit has malfunctioned, preventing the windows from functioning properly.
B2428: Seat Switch Circuit Malfunction
The seat switch circuit has malfunctioned, preventing the seat from functioning properly. This code is typically set when the seat switch circuit is open or shorted.
B2429: Exterior Lighting Malfunction
This code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B2430: Immobilizer System Malfunction
The immobilizer system has malfunctioned, preventing the vehicle from starting or running. This code is typically set when the immobilizer system detects a problem with the key fob, ignition switch, or other related components.
B2431: Audio System Fault
The B2431 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B2432: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2433: Climate Control Actuator Malfunction
The climate control system has detected a malfunction in the actuator, which regulates the flow of air and temperature in the vehicle.
B2434: Door Locks Actuator Malfunction
The B2434 code indicates a malfunction in the door lock actuator, which may cause issues with door locking and unlocking functions.
B2435: Power Window Relay Circuit Malfunction
The power window relay circuit has malfunctioned, preventing the windows from functioning properly. This code is typically set when the window regulator motor or the window switch is faulty.
B2436: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B2437: Exterior Lighting Malfunction
This code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B2438: Immobilizer System Malfunction
The immobilizer system has detected a malfunction, preventing the vehicle from starting or running. This code is typically set when the immobilizer system is not functioning correctly, preventing the vehicle from starting.
B2439: Audio System Fault
The B2439 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B2440: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2441: Climate Control Temperature Sensor Malfunction
The B2441 code indicates a malfunction in the climate control temperature sensor, which may cause the air conditioning or heating system to malfunction or not function at all.
B2442: Door Locks Actuator Malfunction
The B2442 code indicates a malfunction in the door lock actuator, which may cause issues with door locking and unlocking functions.
B2443: Power Window Relay Circuit Malfunction
The power window relay circuit has malfunctioned, preventing the windows from functioning properly.
B2444: Seat Switch Circuit Malfunction
The seat switch circuit has malfunctioned, preventing the seat from functioning properly. This code is typically set when the seat switch circuit is open or shorted.
B2445: Exterior Lighting Malfunction
This code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B2446: Immobilizer System Malfunction
The immobilizer system has detected a malfunction, preventing the engine from starting. This code is typically set when the immobilizer system is not functioning correctly, preventing the engine from starting.
B2447: Audio System Fault
The B2447 code indicates a fault in the audio system, possibly due to a malfunctioning amplifier, speaker, or wiring issue.
B2448: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2449: Climate Control Fan Motor Malfunction
The B2449 code indicates a malfunction in the climate control fan motor, which may cause the fan to stop working or operate intermittently.