All OBD2 Diagnostic Codes
Browse our complete database of 16000 diagnostic trouble codes.
B0800: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B0801: Climate Control System Malfunction
The B0801 code indicates a malfunction in the climate control system, which may cause issues with heating, cooling, or air circulation.
B0802: Door Locks Actuator Circuit Malfunction
The B0802 code indicates a malfunction in the door locks actuator circuit, which may prevent the door locks from functioning properly.
B0803: Power Window Regulator Malfunction
The B0803 code indicates a problem with the power window regulator, which controls the movement of the window up and down. This code is usually triggered when the regulator fails to operate properly, causing the window to malfunction.
B0804: Seat Switch Circuit Malfunction
The B0804 code indicates a malfunction in the seat switch circuit, which controls the seat's position, lumbar support, or recline function.
B0805: Malfunction in Exterior Lighting Circuit
The B0805 code indicates a problem with the exterior lighting circuit, which can cause issues with the headlight, taillight, or brake light functions.
B0806: Body System Security Malfunction
The B0806 code indicates a malfunction in the vehicle's body system security functionality, which may cause issues with door locks, alarm systems, or other security-related features.
B0807: Audio System Malfunction
The B0807 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B0808: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B0809: Climate Control Actuator Malfunction
The B0809 code indicates a malfunction in the climate control system, specifically with the actuator that controls the temperature and airflow.
B0810: Door Locks Malfunction
The B0810 code indicates a malfunction in the door lock system, which may cause issues with locking or unlocking doors, or even prevent doors from being locked or unlocked properly.
B0811: Power Window Regulator Malfunction
The B0811 code indicates a problem with the power window regulator, which controls the movement of the window up and down. This code is often triggered by a faulty or damaged regulator, but it can also be caused by a faulty window switch or wiring issues.
B0812: Seat Adjuster Motor Circuit Malfunction
The seat adjuster motor circuit has malfunctioned, preventing the driver's seat from adjusting properly.
B0813: Turn Signal Indicator Malfunction
The B0813 code indicates a problem with the turn signal indicator circuit, which may cause the turn signals to malfunction or not function at all.
B0814: Immobilizer System Malfunction
The immobilizer system has failed to communicate with the engine control module, preventing the vehicle from starting. This code is typically set when the immobilizer key fob battery is weak or dead.
B0815: Audio System Malfunction
The B0815 code indicates a malfunction in the audio system, which may cause issues with sound quality, volume, or functionality.
B0816: Airbag System Fault - Deployment Module
The airbag system deployment module has detected an internal fault or malfunction, preventing the airbag from deploying in the event of a crash.
B0817: Climate Control Malfunction
The B0817 code indicates a malfunction in the climate control system, specifically with the blower motor resistor or the blower motor itself.
B0818: Door Lock Actuator Malfunction
The B0818 code indicates a malfunction in the door lock actuator, which prevents the door locks from functioning properly.
B0819: Power Window Relay Circuit Malfunction
The power window relay circuit has malfunctioned, preventing the windows from functioning properly.
B0820: 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.
B0821: 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.
B0822: Body System Security Malfunction
This code indicates a malfunction in the vehicle's security system, which may cause issues with door locks, alarm systems, or immobilizers.
B0823: Audio System Malfunction
This code indicates a malfunction in the audio system, such as no sound or distorted sound, due to a faulty amplifier, speaker, or wiring issue.
B0824: Airbag System Fault
The airbag system has detected a fault in the deployment sequence or a malfunction in the airbag module.
B0825: Climate Control System Malfunction
This code indicates a malfunction in the climate control system, such as a faulty temperature sensor, a clogged air duct, or a malfunctioning blower motor.
B0826: Door Locks Malfunction
This code indicates a malfunction in the door lock system, causing issues with locking or unlocking the doors.
B0827: Power Window Circuit Malfunction
The B0827 code indicates a problem with the power window circuit, which can cause windows to malfunction or not function at all.
B0828: Seat Switch Circuit Malfunction
The B0828 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 at all.
B0829: Intermittent Front Turn Signal Malfunction
The B0829 code indicates an intermittent malfunction in the front turn signal system, which may cause the turn signal to flash erratically or not function at all.
B0830: Body System Security Malfunction
The B0830 code indicates a malfunction in the vehicle's security system, which may cause issues with door locks, alarm systems, or other security-related functions.
B0831: Audio System Malfunction
The B0831 code indicates a malfunction in the audio system, such as a faulty amplifier, speaker, or wiring issue.
B0832: Airbag System Sensor Circuit Malfunction
The airbag system sensor circuit has malfunctioned, preventing the airbag from deploying properly in the event of a crash. This code is often accompanied by other airbag-related codes.
B0833: Climate Control Blower Motor Fault
This code indicates a fault in the climate control blower motor, which may be due to a faulty motor, wiring issue, or a problem with the blower motor resistor.
B0834: 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.
B0835: Power Window Regulator Circuit Malfunction
The power window regulator circuit has malfunctioned, preventing the window from moving properly. This code is typically set when the window is stuck or not moving correctly.
B0836: Seat Switch Circuit Malfunction
This code indicates a problem with the electrical circuit controlling the seat switch, which may cause issues with seat adjustment, locking, or unlocking.
B0837: Body Control Module (BCM) Lighting Circuit Malfunction
The Body Control Module (BCM) has detected a malfunction in the lighting circuit, which may cause issues with the vehicle's exterior lights, such as the headlights, taillights, or turn signals.
B0838: Body System Security Code
This code indicates a malfunction in the vehicle's security system, which may prevent the vehicle from starting or cause other security-related issues.
B0839: Audio System Fault
The B0839 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B0840: Airbag System Circuit Malfunction
The airbag system circuit has malfunctioned, preventing the airbag from deploying in the event of a crash. This code may also indicate a problem with the airbag sensor or wiring.
B0841: Climate Control Blower Motor Fault
The B0841 code indicates a fault in the climate control blower motor circuit, which may cause the blower motor to malfunction or not function at all.
B0842: Door Locks Malfunction
The B0842 code indicates a malfunction in the door lock system, which may cause the doors to lock or unlock unexpectedly, or not function at all.
B0843: Power Window Circuit Malfunction
This code indicates a problem with the power window circuit, preventing the windows from functioning properly. The issue may be related to a faulty window switch, wiring, or motor.
B0844: Seat Position Sensor Malfunction
The seat position sensor is malfunctioning, preventing the seat from adjusting properly. This can cause issues with seat memory, lumbar support, and seat belt operation.
B0845: Illumination Malfunction
This code indicates a problem with the vehicle's lighting system, such as a faulty headlight, taillight, or brake light.
B0846: Immobilizer System Malfunction
The immobilizer system has detected a malfunction, preventing the vehicle from starting. This code is typically caused by a faulty immobilizer module, key fob, or wiring issue.
B0847: Audio System Malfunction
This code indicates a malfunction in the audio system, such as faulty speakers, amplifier, or wiring issues.
B0848: Airbag System Malfunction
The airbag system has malfunctioned, preventing the airbags from deploying properly in the event of a crash. This code is typically set when the airbag sensor module detects a problem with the airbag system.
B0849: Climate Control Blower Motor Fault
The B0849 code indicates a fault in the climate control blower motor circuit, which may cause issues with airflow and temperature control in the vehicle.