All OBD2 Diagnostic Codes
Browse our complete database of 16000 diagnostic trouble codes.
C1800: Brake System Malfunction
The C1800 code indicates a malfunction in the brake system, likely due to a faulty brake sensor or a problem with the brake pedal switch.
C1801: Front Left Lower Control Arm Fracture
This code indicates a fracture in the front left lower control arm, which affects the suspension's ability to absorb bumps and vibrations.
C1802: Electric Power Steering (EPS) Fault
The C1802 code indicates a fault in the Electric Power Steering (EPS) system, which may cause the steering to become difficult or unresponsive.
C1803: 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.
C1804: Traction Control System Malfunction
The traction control system has detected a malfunction, which may be caused by a faulty wheel speed sensor, faulty ABS sensor, or a problem with the traction control module.
C1805: 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.
C1806: Anti-lock Brake System (ABS) Pump Control Module Circuit Malfunction
The ABS pump control module circuit has malfunctioned, preventing the ABS system from functioning properly.
C1807: Brake System Pressure Sensor Circuit Malfunction
The brake system pressure sensor circuit has malfunctioned, indicating a problem with the brake system's hydraulic pressure.
C1808: Rear Suspension Strut or Shock Absorber Fault
This code indicates a fault in the rear suspension strut or shock absorber, which can cause uneven tire wear, reduced ride quality, and potentially affect vehicle stability.
C1809: Electric Power Steering (EPS) System Fault
The C1809 code indicates a fault in the Electric Power Steering (EPS) system, which may cause the steering to become difficult or unresponsive.
C1810: 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.
C1811: 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.
C1812: Wheel Speed Sensor Malfunction
The wheel speed sensor malfunction code C1812 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.
C1813: 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.
C1814: 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.
C1815: Rear Suspension Control Arm Fracture
The C1815 code indicates a fracture in the rear suspension control arm, which can cause uneven tire wear, vibration, and loss of handling stability.
C1816: Steering Column Position Sensor Circuit Malfunction
The power steering control module has detected a malfunction in the steering column position sensor circuit, which may cause erratic steering behavior or difficulty turning the wheels.
C1817: 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.
C1818: 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.
C1819: Wheel Speed Sensor Malfunction
The wheel speed sensor malfunction code C1819 indicates a problem with the wheel speed sensor circuit, which is used to monitor the speed of the vehicle's wheels.
C1820: 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.
C1821: 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.
C1822: Left Front Suspension Strut Friction Bushing Fault
The C1822 code indicates a fault in the left front suspension strut friction bushing, which can cause uneven tire wear, vibration, and noise.
C1823: Steering Column Position Sensor Circuit Malfunction
The power steering control module has detected a malfunction in the steering column position sensor circuit, which may cause issues with steering feel, stability, and safety.
C1824: Electronic Stability Control (ESC) Malfunction
The Electronic Stability Control (ESC) system has detected a malfunction, which can cause the vehicle to lose traction and stability.
C1825: 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.
C1826: Wheel Speed Sensor Malfunction
The wheel speed sensor malfunction code C1826 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.
C1827: ABS System Malfunction
The ABS system has malfunctioned, likely due to a faulty wheel speed sensor or a problem with the ABS module.
C1828: 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.
C1829: Left Rear Suspension Strut Friction Bushing Fault
The C1829 code indicates a fault in the left rear suspension strut friction bushing, which can cause uneven tire wear, vibration, and reduced handling.
C1830: Steering Column Position Sensor Circuit Malfunction
The Power Steering Control Module (PSCM) has detected a malfunction in the steering column position sensor circuit, which may cause issues with power steering assist and steering wheel position.
C1831: Electronic Stability Control (ESC) Malfunction
The Electronic Stability Control (ESC) system has detected a malfunction, which may cause loss of traction and stability.
C1832: 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.
C1833: Wheel Speed Sensor Malfunction
This code indicates a problem with one or more wheel speed sensors, which monitor wheel rotation speed and send signals to the vehicle's computer. The sensor may be faulty, dirty, or damaged.
C1834: 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.
C1835: 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.
C1836: Left Front Suspension Strut Friction Bushing Fault
The C1836 code indicates a fault in the left front suspension strut friction bushing, which can cause uneven tire wear, vibrations, and reduced handling.
C1837: Steering Column Position Sensor Circuit Malfunction
The power steering control module has detected a malfunction in the steering column position sensor circuit, which may cause erratic steering behavior or difficulty turning the wheels.
C1838: Electronic Stability Control (ESC) Malfunction
The Electronic Stability Control (ESC) system has detected a malfunction, which may cause reduced traction and stability control.
C1839: Traction Control 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.
C1840: Wheel Speed Sensor Malfunction
The wheel speed sensor is not functioning properly, which can cause issues with the vehicle's anti-lock braking system (ABS) and traction control system. This code is specific to Ford vehicles. (Ford)
C1841: ABS System Malfunction
The ABS system has detected a malfunction in the wheel speed sensor circuit. This code is specific to Toyota and Honda models.
C1842: Brake System Malfunction
The brake system malfunction code C1842 indicates a problem with the brake system's operation, which may be related to the brake pedal, brake fluid, or brake pads. (Toyota)
C1843: Rear Suspension Strut Mount Failure
This code indicates a fault in the rear suspension strut mount, which can cause uneven tire wear, vibration, and noise.
C1844: Steering Column Angle Sensor Circuit Malfunction
The steering column angle sensor circuit has malfunctioned, causing the vehicle's computer to set this code. This code is specific to Ford vehicles. (Ford)
C1845: Electronic Stability Control (ESC) Malfunction
The Electronic Stability Control (ESC) system has malfunctioned, which can cause the vehicle to lose traction and stability. This code is specific to Toyota and Lexus vehicles. (Toyota)
C1846: 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.
C1847: Wheel Speed Sensor Malfunction
The wheel speed sensor malfunction code C1847 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.
C1848: ABS System Malfunction
The ABS system has malfunctioned, likely due to a faulty wheel speed sensor or a problem with the ABS module.
C1849: 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.