All OBD2 Diagnostic Codes
Browse our complete database of 16000 diagnostic trouble codes.
Chassis System Code C3900 - Brake System
Chassis system diagnostic trouble code related to brake system operation.
C3901: Front Left Lower Control Arm Bushing Wear
This code indicates wear on the front left lower control arm bushing, which can cause uneven tire wear, loose steering, and reduced handling.
C3902: Electric Power Steering (EPS) Fault
The C3902 code indicates a fault in the Electric Power Steering (EPS) system, which may cause the steering to become difficult or unresponsive.
C3903: Electronic Stability Control (ESC) Malfunction
The Electronic Stability Control (ESC) system has detected a malfunction, which may cause loss of traction and stability.
C3904: Traction Control System Malfunction
The traction control system has malfunctioned, likely due to a faulty wheel speed sensor or a problem with the traction control module.
C3905: Wheel Speed Sensor Malfunction
The wheel speed sensor malfunction code C3905 indicates a problem with the wheel speed sensor circuit, which can cause issues with the vehicle's anti-lock braking system (ABS) and traction control system.
C3906: ABS System Malfunction
The ABS system has detected a malfunction in the wheel speed sensor circuit, which may cause the ABS system to malfunction or not function at all.
C3907: Brake System Pressure Sensor Circuit Malfunction
The brake system pressure sensor circuit has malfunctioned, indicating a problem with the brake system's ability to regulate pressure.
C3908: Rear Suspension Strut Friction Bushing Fault
This code indicates a fault in the rear suspension strut friction bushing, which can cause uneven tire wear, vibration, and noise.
C3909: Electric Power Steering (EPS) System Fault
The C3909 code indicates a fault in the Electric Power Steering (EPS) system, which may cause the vehicle's steering to become difficult or unresponsive.
C3910: Electronic Stability Control (ESC) Malfunction
The Electronic Stability Control (ESC) system has detected a malfunction, which may cause the vehicle to lose traction or stability.
C3911: Traction Control System Malfunction
The traction control system has malfunctioned due to a faulty wheel speed sensor or a problem with the traction control module.
Chassis System Code C3912 - Wheel Speed Sensors
Chassis system diagnostic trouble code related to wheel speed sensors operation.
Chassis System Code C3913 - ABS System
Chassis system diagnostic trouble code related to abs system operation.
Chassis System Code C3914 - Brake System
Chassis system diagnostic trouble code related to brake system operation.
Chassis System Code C3915 - Suspension
Chassis system diagnostic trouble code related to suspension operation.
C3916: Electric Power Steering (EPS) System Fault
The C3916 code indicates a fault in the Electric Power Steering (EPS) system, which may cause the steering to become difficult or unresponsive.
C3917: Electronic Stability Control (ESC) Malfunction
The Electronic Stability Control (ESC) system has detected a malfunction, which may cause reduced traction and stability control.
C3918: Traction Control System Malfunction
The traction control system has malfunctioned, likely due to a faulty wheel speed sensor or a problem with the traction control module.
C3919: Wheel Speed Sensor Malfunction
The wheel speed sensor malfunction code C3919 indicates a problem with the wheel speed sensor circuit, which is used to monitor the vehicle's speed and traction control system.
C3920: ABS System Malfunction
The ABS system has malfunctioned, likely due to a faulty wheel speed sensor or a problem with the ABS module.
C3921: Brake System Pressure Sensor Circuit Malfunction
The brake system pressure sensor circuit has malfunctioned, causing the brake system to malfunction.
C3922: Rear Suspension Strut Friction Bushing Fault
The C3922 code indicates a fault in the rear suspension strut friction bushing, which can cause uneven tire wear, vibrations, and reduced ride quality.
C3923: Electric Power Steering (EPS) System Fault
The C3923 code indicates a fault in the Electric Power Steering (EPS) system, which may cause the steering to become difficult or unresponsive.
C3924: Electronic Stability Control (ESC) Malfunction
The Electronic Stability Control (ESC) system has detected a malfunction, which may cause reduced traction and stability control.
C3925: Traction Control System Malfunction
The traction control system has detected a malfunction, likely due to a faulty wheel speed sensor or a problem with the traction control module.
C3926: Wheel Speed Sensor Malfunction
The wheel speed sensor malfunction code indicates a problem with the wheel speed sensor circuit, which can cause issues with the vehicle's anti-lock braking system (ABS) and traction control system.
C3927: ABS System Malfunction
The ABS system has malfunctioned, likely due to a faulty wheel speed sensor or a problem with the ABS module.
C3928: Brake System Malfunction
This code indicates a malfunction in the brake system, possibly due to a faulty brake sensor, faulty brake switch, or a problem with the brake fluid level.
C3929: Left Front Suspension Strut Friction Bushing Fault
This code indicates a faulty left front suspension strut friction bushing, which can cause uneven tire wear, vibration, and noise while driving.
C3930: Electric Power Steering (EPS) System Fault
The C3930 code indicates a fault in the Electric Power Steering (EPS) system, which may cause the vehicle's steering to become difficult or unresponsive.
C3931: Electronic Stability Control (ESC) Malfunction
The Electronic Stability Control (ESC) system has detected a malfunction, which may cause the vehicle to lose traction or stability.
C3932: Traction Control System Malfunction
The traction control system has detected a malfunction, likely due to a faulty wheel speed sensor or a problem with the traction control module.
C3933: Wheel Speed Sensor Malfunction
The wheel speed sensor malfunction code C3933 indicates a problem with the wheel speed sensor circuit, which is used to monitor the speed of the vehicle's wheels. This code is often triggered by a faulty sensor, wiring issue, or a problem with the sensor's electrical connection.
C3934: ABS System Malfunction
The ABS system has detected a malfunction in the wheel speed sensor circuit, which may cause the ABS system to malfunction or not function at all.
C3935: Brake System Pressure Sensor Circuit Malfunction
The brake system pressure sensor circuit has malfunctioned, indicating a problem with the brake system's ability to regulate pressure.
C3936: Rear Suspension Strut Mount Fracture
This code indicates a fracture in the rear suspension strut mount, which can cause uneven tire wear, vibrations, and reduced handling.
C3937: Electric Power Steering (EPS) System Fault
The C3937 code indicates a fault in the Electric Power Steering (EPS) system, which may cause the steering to become difficult or unresponsive.
C3938: Electronic Stability Control (ESC) Malfunction
The Electronic Stability Control (ESC) system has detected a malfunction, which may cause reduced traction and stability control.
C3939: Traction Control System Malfunction
The traction control system has detected a malfunction, which may be caused by a faulty wheel speed sensor, a problem with the traction control module, or a wiring issue.
C3940: Wheel Speed Sensor Malfunction
The wheel speed sensor malfunction code C3940 indicates a problem with the wheel speed sensor circuit, which monitors the speed of the vehicle's wheels and sends the data to the vehicle's computer.
C3941: ABS System Malfunction
The ABS system has detected a malfunction in the wheel speed sensor circuit, which may cause the ABS system to malfunction or not function at all.
C3942: Brake System Pressure Sensor Circuit Malfunction
The brake system pressure sensor circuit has malfunctioned, causing the brake system to malfunction and trigger this code.
C3943: Left Rear Suspension Strut Friction Bushing Fault
The C3943 code indicates a fault in the left rear suspension strut friction bushing, which can cause uneven tire wear, vibration, and reduced handling.
C3944: Electric Power Steering (EPS) System Fault
The C3944 code indicates a fault in the Electric Power Steering (EPS) system, which may cause the steering to become difficult or unresponsive.
C3945: Electronic Stability Control (ESC) Malfunction
The Electronic Stability Control (ESC) system has detected a malfunction, which may cause reduced traction and stability control.
C3946: Traction Control System Malfunction
The traction control system has detected a malfunction, likely due to a faulty wheel speed sensor or a problem with the traction control module.
C3947: Wheel Speed Sensor Malfunction
The wheel speed sensor malfunction code indicates that the vehicle's anti-lock braking system (ABS) or traction control system (TCS) has detected an issue with one or more wheel speed sensors.
C3948: ABS System Malfunction
The ABS system has detected a malfunction in the wheel speed sensor circuit, which may cause the ABS system to malfunction or not function at all.
C3949: Brake System Pressure Sensor Circuit Malfunction
The brake system pressure sensor circuit has malfunctioned, causing the brake system to malfunction. This can cause the brake pedal to feel spongy or soft.