All OBD2 Diagnostic Codes
Browse our complete database of 16000 diagnostic trouble codes.
B2500: 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.
B2501: Body System Code - Lighting Functionality
This code indicates a malfunction in the vehicle's lighting system, such as a faulty headlight, taillight, or turn signal.
B2502: Body System Code - Security System Malfunction
The security system has malfunctioned, preventing the vehicle from starting or causing other security-related issues.
B2503: Audio System Malfunction
The B2503 code indicates a malfunction in the audio system, likely due to a faulty amplifier, speaker, or wiring issue.
B2504: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2505: Climate Control Fan Motor Fault
The B2505 code indicates a fault in the climate control fan motor circuit, which may cause the fan to malfunction or not function at all.
B2506: 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.
B2507: Power Window Regulator Malfunction
The power window regulator has failed, preventing the window from moving up or down properly.
B2508: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B2509: Exterior Lighting Malfunction
The B2509 code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B2510: Body System Security Malfunction
The body control module (BCM) has detected a security-related issue, such as a tamper attempt or a malfunction in the security system.
B2511: Audio System Malfunction
The B2511 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B2512: Airbag System Fault
The airbag system has detected a fault, which may be related to a faulty sensor, wiring issue, or malfunctioning airbag module.
B2513: Climate Control Temperature Sensor Malfunction
The B2513 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.
B2514: Door Locks Actuator Malfunction
The B2514 code indicates a malfunction in the door lock actuator, which may cause issues with door locking and unlocking functions.
B2515: Power Window Relay Circuit Malfunction
The power window relay circuit has malfunctioned, preventing the windows from functioning properly.
B2516: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B2517: 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.
B2518: Body System Security Malfunction
The B2518 code indicates a malfunction in the vehicle's security system, which may cause issues with door locks, alarm systems, or other security-related functions.
B2519: Audio System Malfunction
The B2519 code indicates a malfunction in the audio system, likely due to a faulty amplifier, speaker, or wiring issue.
B2520: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2521: Climate Control Fan Motor Malfunction
The B2521 code indicates a malfunction in the climate control fan motor, which may cause the fan to stop working or operate erratically.
B2522: Door Locks Actuator Circuit Malfunction
The B2522 code indicates a malfunction in the door locks actuator circuit, which may cause issues with door locking and unlocking functions.
B2523: Power Window Regulator Circuit Malfunction
The power window regulator circuit has malfunctioned, preventing the window from moving properly.
B2524: 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.
B2525: Body Control Module (BCM) Malfunction - Lighting
The Body Control Module (BCM) has detected an issue with the vehicle's lighting system, which may be due to a faulty BCM, wiring, or a malfunctioning lighting component.
B2526: 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.
B2527: Audio System Malfunction
The B2527 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B2528: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2529: Climate Control Temperature Sensor Malfunction
The climate control system has detected a malfunction in the temperature sensor, which may be causing inaccurate temperature readings or poor air flow.
B2530: Door Locks Malfunction
The B2530 code indicates a malfunction in the door lock system, which may cause issues with locking or unlocking doors, or even prevent doors from locking or unlocking properly.
B2531: Power Window Relay Circuit Malfunction
The power window relay circuit has malfunctioned, preventing the windows from functioning properly.
B2532: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B2533: Body Control Module (BCM) Malfunction - Exterior Lighting
The Body Control Module (BCM) has detected a malfunction in the exterior lighting system, which may cause issues with turn signals, brake lights, or other exterior lights.
B2534: 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.
B2535: Audio System Malfunction
This code indicates a malfunction in the audio system, such as no sound or distorted sound, due to a problem with the amplifier, speakers, or wiring.
B2536: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2537: Climate Control Blower Motor Fault
The B2537 code indicates a fault in the climate control blower motor circuit, which may cause issues with air flow and temperature regulation.
B2538: Door Locks Actuator Circuit Malfunction
The B2538 code indicates a malfunction in the door locks actuator circuit, which controls the operation of the door locks. This can cause issues with locking and unlocking the doors.
B2539: Power Window Circuit Malfunction
The B2539 code indicates a problem with the power window circuit, which can cause windows to malfunction or not function at all.
B2540: 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.
B2541: Exterior Lighting Malfunction
This code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B2542: 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.
B2543: Audio System Malfunction
The B2543 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B2544: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2545: Climate Control Temperature Sensor Malfunction
The B2545 code indicates a malfunction in the climate control temperature sensor, which can cause issues with the air conditioning and heating systems.
B2546: Door Locks Actuator Malfunction
The door locks actuator is malfunctioning, preventing the doors from locking or unlocking properly.
B2547: Power Window Regulator Fault
The power window regulator has failed, preventing the window from moving properly.
B2548: 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.
B2549: Exterior Lighting Malfunction
The B2549 code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.