All OBD2 Diagnostic Codes
Browse our complete database of 16000 diagnostic trouble codes.
B3950: Immobilizer System Malfunction
The immobilizer system has detected a malfunction, preventing the engine from starting. This code is usually triggered by a faulty immobilizer sensor, wiring issue, or a problem with the keyless entry system.
B3951: Audio System Fault
The B3951 code indicates a fault in the audio system, possibly due to a malfunctioning amplifier, speaker, or wiring issue.
B3952: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B3953: Climate Control Fan Motor Malfunction
The B3953 code indicates a malfunction in the climate control fan motor, which may cause the fan to stop working or operate erratically.
B3954: Door Locks Actuator Malfunction
The B3954 code indicates a malfunction in the door lock actuator, which prevents the door locks from functioning properly.
B3955: Power Window Regulator Malfunction
The power window regulator is malfunctioning, preventing the window from moving up or down properly.
B3956: 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.
B3957: Exterior Lighting Malfunction
The B3957 code indicates a malfunction in the exterior lighting system, such as the headlights, taillights, or turn signals.
B3958: Body System Security Malfunction
The body system security module has detected an error or malfunction, which may be related to the vehicle's immobilizer system, alarm system, or other security-related components.
B3959: Audio System Malfunction
The B3959 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B3960: Airbag System Malfunction
The airbag system has detected a malfunction, which may be due to a faulty sensor, wiring issue, or software problem.
B3961: Climate Control Fan Motor Malfunction
The B3961 code indicates a malfunction in the climate control fan motor, which may cause the fan to stop working or operate intermittently.
B3962: Door Locks Actuator Malfunction
The B3962 code indicates a malfunction in the door lock actuator, which prevents the door locks from functioning properly.
B3963: Power Window Regulator Malfunction
The power window regulator is malfunctioning, preventing the window from moving up or down properly.
B3964: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B3965: 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.
B3966: Body System Security Malfunction
The body control module (BCM) has detected a security-related issue, such as a faulty door ajar switch or a malfunctioning alarm system.
B3967: Audio System Malfunction
The B3967 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B3968: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B3969: Climate Control Temperature Sensor Malfunction
The climate control system has detected a malfunction in the temperature sensor, which may cause inaccurate temperature readings or failure to maintain a set temperature.
B3970: Door Locks Malfunction
The B3970 code indicates a malfunction in the door lock system, which may cause issues with locking or unlocking doors.
B3971: Power Window Regulator Malfunction
The power window regulator is malfunctioning, preventing the window from moving properly.
B3972: 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.
B3973: Exterior Lighting Malfunction
This code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B3974: 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.
B3975: Audio System Fault
The B3975 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B3976: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B3977: Climate Control Fan Motor Fault
The B3977 code indicates a fault in the climate control fan motor circuit, which may cause the fan to malfunction or not function at all.
B3978: Door Locks Actuator Malfunction
The B3978 code indicates a malfunction in the door lock actuator, which may cause issues with door locking and unlocking functions.
B3979: Power Window Relay Circuit Malfunction
The power window relay circuit has malfunctioned, preventing the windows from functioning properly.
B3980: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B3981: Exterior Lighting Malfunction
This code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B3982: 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 being started.
B3983: Audio System Fault
The B3983 code indicates a fault in the audio system, possibly due to a malfunctioning amplifier, speaker, or wiring issue.
B3984: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B3985: Climate Control Fan Motor Malfunction
The B3985 code indicates a malfunction in the climate control fan motor, which may cause the fan to stop working or operate erratically.
B3986: Door Locks Actuator Malfunction
The B3986 code indicates a malfunction in the door lock actuator, which prevents the doors from locking or unlocking properly.
B3987: Power Window Regulator Malfunction
The power window regulator is malfunctioning, preventing the window from moving properly.
B3988: Seat Position Sensor Circuit Malfunction
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
B3989: Exterior Lighting Malfunction
This code indicates a problem with the exterior lighting system, such as a faulty headlight, taillight, or turn signal.
B3990: 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.
B3991: Audio System Malfunction
The B3991 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
B3992: Airbag System Fault
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
B3993: Climate Control Fan Motor Fault
The B3993 code indicates a fault in the climate control fan motor circuit, which may cause the fan to malfunction or not function at all.
B3994: Door Locks Actuator Malfunction
The B3994 code indicates a malfunction in the door lock actuator, which may cause the doors to malfunction or not lock/unlock properly.
B3995: Power Window Regulator Malfunction
The power window regulator is malfunctioning, preventing the window from moving properly.
B3996: Seat Switch Circuit Malfunction
The seat switch circuit has malfunctioned, preventing the seat from functioning properly. This code is usually triggered when the seat switch circuit is open or shorted.
B3997: Exterior Lighting Malfunction
The B3997 code indicates a malfunction in the exterior lighting system, such as the headlights, taillights, or turn signals.
B3998: 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.
B3999: Audio System Malfunction
The B3999 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.