All OBD2 Diagnostic Codes
Browse our complete database of 16000 diagnostic trouble codes.
B1800: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B1801: Climate Control Actuator Malfunction
The B1801 code indicates a malfunction in the climate control actuator, which regulates the flow of air and temperature in the vehicle's cabin.
B1802: Door Locks Actuator Circuit Malfunction
The B1802 code indicates a malfunction in the door locks actuator circuit, which may cause issues with door locking and unlocking functions.
B1803: Power Window Circuit Malfunction
The B1803 code indicates a problem with the power window circuit, which can cause windows to malfunction or not function at all.
B1804: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B1805: Exterior Lighting Malfunction
The B1805 code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B1806: 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.
B1807: Audio System Fault
The B1807 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B1808: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B1809: Climate Control Malfunction
The B1809 code indicates a malfunction in the climate control system, which may cause issues with temperature regulation, air flow, or fan operation.
B1810: Door Locks Malfunction
The B1810 code indicates a malfunction in the door lock system, which may cause the doors to lock or unlock unexpectedly, or fail to function properly.
B1811: Power Window Circuit Malfunction
The B1811 code indicates a problem with the power window circuit, which may cause one or more windows to malfunction or not function at all.
B1812: 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.
B1813: Exterior Lighting Malfunction
The B1813 code indicates a malfunction in the exterior lighting system, such as the headlights, taillights, or turn signals.
B1814: 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.
B1815: Audio System Fault
The B1815 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B1816: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B1817: Climate Control Fan Motor Fault
The B1817 code indicates a fault in the climate control fan motor circuit, which may cause the fan to malfunction or not function at all.
B1818: Door Locks Actuator Malfunction
The B1818 code indicates a malfunction in the door lock actuator, which may cause the door locks to malfunction or not function at all.
B1819: Power Window Relay Circuit Malfunction
The power window relay circuit has malfunctioned, preventing the windows from functioning properly.
B1820: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B1821: Turn Signal Lamp Malfunction
The B1821 code indicates a malfunction in the turn signal lamp circuit, which can cause the turn signals to malfunction or not function at all.
B1822: 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.
B1823: Audio System Fault
The B1823 code indicates a fault in the audio system, possibly due to a malfunctioning amplifier, speaker, or wiring issue.
B1824: Airbag System Circuit Malfunction
The airbag system circuit has malfunctioned, preventing the airbag from deploying properly in the event of a crash.
B1825: Climate Control Temperature Sensor Malfunction
The B1825 code indicates a malfunction in the climate control temperature sensor, which regulates the temperature in the vehicle's cabin.
B1826: Door Locks Actuator Circuit Malfunction
The B1826 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.
B1827: Power Window Regulator Circuit Malfunction
The power window regulator circuit has malfunctioned, preventing the window from moving properly.
B1828: 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.
B1829: Turn Signal/Hazard Light Malfunction
The B1829 code indicates a problem with the turn signal or hazard light system, which may cause the lights to malfunction or not function at all.
B1830: 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.
B1831: Audio System Fault
The B1831 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B1832: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B1833: Climate Control Fan Motor Malfunction
The B1833 code indicates a malfunction in the climate control fan motor, which may cause the fan to stop working or operate erratically.
B1834: Door Locks Actuator Circuit Malfunction
The B1834 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.
B1835: Power Window Circuit Malfunction
The B1835 code indicates a malfunction in the power window circuit, which can cause windows to malfunction or not function at all.
B1836: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B1837: Exterior Lighting Malfunction
The B1837 code indicates a malfunction in the exterior lighting system, such as the headlights, taillights, or turn signals.
B1838: Immobilizer System Malfunction
The immobilizer system has detected a malfunction, preventing the engine from starting. This code is often caused by a faulty immobilizer module, key fob, or wiring issue.
B1839: Audio System Malfunction
The B1839 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B1840: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B1841: 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.
B1842: Door Locks Actuator Circuit Malfunction
The B1842 code indicates a malfunction in the door locks actuator circuit, which can cause issues with door locking and unlocking functions.
B1843: Power Window Circuit Malfunction
The B1843 code indicates a problem with the power window circuit, which can cause windows to malfunction or not function at all.
B1844: 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.
B1845: Exterior Lighting Malfunction
This code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B1846: 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.
B1847: Audio System Fault
The B1847 code indicates a fault in the audio system, likely due to a malfunctioning amplifier, speaker, or wiring issue.
B1848: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B1849: Climate Control Actuator Malfunction
The B1849 code indicates a malfunction in the climate control system, specifically with the actuator that controls the temperature and fan speed.