All OBD2 Diagnostic Codes
Browse our complete database of 16000 diagnostic trouble codes.
B2000: Airbag System Malfunction
The airbag system has detected a malfunction, which may be caused by a faulty sensor, wiring issue, or software problem.
B2001: Climate Control System Malfunction
The B2001 code indicates a malfunction in the climate control system, which may cause issues with temperature regulation, air flow, or fan operation.
B2002: Door Locks Actuator Malfunction
The B2002 code indicates a malfunction in the door lock actuator, which may cause the doors to malfunction or not lock/unlock properly.
B2003: Power Window Circuit Malfunction
The B2003 code indicates a problem with the power window circuit, which may cause windows to malfunction or not function at all.
B2004: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B2005: Turn Signal Lamp Malfunction
The B2005 code indicates a malfunction in the turn signal lamp circuit, which can cause the turn signals to malfunction or not function at all.
B2006: 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.
B2007: Audio System Malfunction
The B2007 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B2008: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2009: Climate Control System Malfunction
The B2009 code indicates a malfunction in the climate control system, which may cause issues with temperature control, air flow, or fan operation.
B2010: Door Locks Malfunction
The B2010 code indicates a malfunction in the door lock system, which can cause issues with locking and unlocking the doors.
B2011: Power Window Circuit Malfunction
The B2011 code indicates a problem with the power window circuit, which may cause windows to malfunction or not function at all.
B2012: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B2013: Low Beam Headlight Relay Circuit Malfunction
The B2013 code indicates a malfunction in the low beam headlight relay circuit, which can cause the low beam headlights to malfunction or not function at all.
B2014: 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.
B2015: Audio System Malfunction
The B2015 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B2016: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2017: Climate Control Temperature Sensor Malfunction
The B2017 code indicates a malfunction in the climate control temperature sensor, which regulates the temperature in the vehicle's cabin.
B2018: Door Locks Actuator Malfunction
The B2018 code indicates a malfunction in the door lock actuator, which may prevent the doors from locking or unlocking properly.
B2019: Power Window Circuit Malfunction
The B2019 code indicates a problem with the power window circuit, which can cause windows to malfunction or not function at all.
B2020: 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.
B2021: Body System Code - Lighting Malfunction
The B2021 code indicates a malfunction in the vehicle's lighting system, such as a faulty headlight, taillight, or brake light.
B2022: Immobilizer System Malfunction
The immobilizer system has detected a malfunction, preventing the vehicle from starting. This code is usually caused by a faulty immobilizer module, key fob, or wiring issue.
B2023: Audio System Malfunction
The B2023 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B2024: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2025: Climate Control Temperature Sensor Malfunction
The B2025 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.
B2026: Door Locks Malfunction
The B2026 code indicates a malfunction in the door lock system, which can cause issues with locking and unlocking the doors.
B2027: Power Window Circuit Malfunction
The power window circuit has malfunctioned, preventing the windows from functioning properly. This code is typically set when the window regulator or motor is faulty.
B2028: 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.
B2029: Malfunction Indicator Lamp (MIL) Circuit Malfunction
The B2029 code indicates a malfunction in the Malfunction Indicator Lamp (MIL) circuit, which is responsible for illuminating the 'check engine' light on the dashboard.
B2030: 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.
B2031: Audio System Malfunction
The B2031 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B2032: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2033: Climate Control Temperature Sensor Malfunction
The B2033 code indicates a malfunction in the climate control temperature sensor, which can cause issues with the air conditioning and heating systems.
B2034: Door Locks Actuator Malfunction
The B2034 code indicates a malfunction in the door lock actuator, which may cause the door locks to malfunction or not function at all.
B2035: Power Window Regulator Circuit Malfunction
The power window regulator circuit has malfunctioned, preventing the window from moving properly.
B2036: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B2037: Exterior Lighting Malfunction
This code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B2038: 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.
B2039: Audio System Malfunction
The B2039 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B2040: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2041: Climate Control Fan Motor Malfunction
The B2041 code indicates a malfunction in the climate control fan motor, which may cause the fan to stop working or operate intermittently.
B2042: Door Locks Malfunction
This code indicates a malfunction in the door lock system, possibly due to a faulty actuator, wiring issue, or faulty door lock module.
B2043: Power Window Circuit Malfunction
The B2043 code indicates a problem with the power window circuit, which may cause windows to malfunction or not function at all.
B2044: 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.
B2045: Body Control Module (BCM) Malfunction - Lighting
The Body Control Module (BCM) has detected a malfunction in the lighting system, which may cause issues with the vehicle's exterior lights, such as the headlights, taillights, or turn signals.
B2046: 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.
B2047: Audio System Malfunction
The B2047 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B2048: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B2049: Climate Control Malfunction
The B2049 code indicates a malfunction in the climate control system, which may cause issues with temperature control, air flow, or fan operation.