C01xx OBD-II Codes (C0100–C0199)

100 fault codes in the C01xx range. Click any code for causes, diagnostic steps, severity, and common fixes.

C0100 critical
Brake Fluid Level Sensor Circuit Malfunction
C0101 moderate
ABS Brake Fluid Level Switch Circuit
C0102 moderate
ABS Brake Fluid Level Switch Circuit Low
C0103 moderate
ABS Brake Fluid Level Switch Circuit High
C0104 moderate
ABS Brake Fluid Level Switch Performance
C0105 critical
Brake Booster Pressure Sensor Circuit Malfunction
C0106 critical
ABS Motor Relay Circuit
C0107 critical
ABS Motor Relay Circuit Low
C0108 critical
ABS Motor Relay Circuit High
C0109 critical
ABS Motor Relay Performance
C0110 critical
ABS Pump Motor Circuit Malfunction
C0111 critical
ABS Valve Relay Circuit
C0112 critical
ABS Valve Relay Circuit Low
C0113 critical
ABS Valve Relay Circuit High
C0114 critical
ABS Valve Relay Performance
C0115 critical
ABS Pump Motor Circuit Open
C0116 low
ABS Indicator Lamp Circuit
C0117 low
ABS Indicator Lamp Circuit Low
C0118 low
ABS Indicator Lamp Circuit High
C0119 low
ABS Indicator Lamp Performance
C0120 critical
ABS Pump Motor Circuit Short to Ground
C0121 critical
ABS Valve Relay Circuit Malfunction
C0122 critical
ABS Valve Relay Circuit Short to Battery
C0123 critical
ABS Valve Relay Circuit Short to Ground
C0124 low
ABS Traction Control Switch Circuit
C0125 moderate
Left Front Wheel Speed Sensor Circuit Erratic
C0126 moderate
Right Front Wheel Speed Sensor Circuit Erratic
C0127 moderate
Left Rear Wheel Speed Sensor Circuit Erratic
C0128 critical
ABS Low Brake Fluid Circuit
C0129 critical
ABS Brake Fluid Level Sensor Circuit Malfunction
C0130 moderate
Right Rear Wheel Speed Sensor Circuit Erratic
C0131 critical
ABS/TCS Pressure Sensor Circuit Malfunction
C0132 critical
ABS/TCS Pressure Sensor Circuit Range/Performance
C0133 critical
ABS System Pressure Circuit Malfunction
C0134 moderate
ABS System Calibration Error
C0135 moderate
Steering Angle Sensor Circuit Range/Performance
C0136 critical
ABS Base Brake System Pressure Circuit Low
C0137 moderate
Lateral Acceleration Sensor Circuit Malfunction
C0138 moderate
Yaw Rate Sensor Circuit Malfunction
C0139 moderate
Longitudinal Acceleration Sensor Circuit Malfunction
C0140 moderate
Electronic Stability Control System Malfunction
C0141 critical
Left Front ABS Inlet Valve Solenoid Malfunction
C0142 low
Traction Control System Switch Circuit Malfunction
C0143 moderate
Traction Control System Excessive Intervention
C0144 critical
Electronic Brake Force Distribution System Malfunction
C0145 moderate
Brake Pad Wear Sensor Circuit Malfunction
C0146 critical
Right Front ABS Inlet Valve Solenoid Malfunction
C0147 moderate
Parking Brake Actuator Circuit Malfunction
C0148 low
Parking Brake Switch Circuit Malfunction
C0149 moderate
Parking Brake Actuator Over-Temperature
C0150 critical
Electronic Power Steering Motor Circuit Malfunction
C0151 critical
Left Rear ABS Inlet Valve Solenoid Malfunction
C0152 critical
Electronic Power Steering Torque Sensor Circuit Malfunction
C0153 moderate
Electronic Power Steering Control Module Voltage Low
C0154 moderate
Power Steering Fluid Pressure Sensor Circuit Malfunction
C0155 critical
Power Steering Pump Motor Circuit Malfunction
C0156 critical
Right Rear ABS Inlet Valve Solenoid Malfunction
C0157 moderate
Ride Height Sensor Front Left Circuit Malfunction
C0158 moderate
Ride Height Sensor Front Right Circuit Malfunction
C0159 moderate
Ride Height Sensor Rear Left Circuit Malfunction
C0160 moderate
Ride Height Sensor Rear Right Circuit Malfunction
C0161 moderate
ABS/TCS Brake Switch Circuit Malfunction
C0162 moderate
Air Suspension Compressor Circuit Malfunction
C0163 moderate
Air Suspension Solenoid Valve Circuit Malfunction
C0164 moderate
Air Spring Pressure Sensor Circuit Malfunction
C0165 moderate
Adaptive Damper Control Front Left Malfunction
C0166 moderate
Adaptive Damper Control Front Right Malfunction
C0167 moderate
Adaptive Damper Control Rear Left Malfunction
C0168 moderate
Adaptive Damper Control Rear Right Malfunction
C0169 moderate
Suspension Control Module Communication Error
C0170 moderate
Active Suspension Crosslink Solenoid Malfunction
C0171 critical
Electronic Brake Control Module Relay Circuit Open
C0172 critical
Electronic Brake Control Module Relay Circuit Short to Ground
C0173 critical
Electronic Brake Control Module Relay Circuit Short to Battery
C0174 critical
Electronic Brake Control Module Relay Coil Circuit Open
C0175 low
Tire Pressure Monitoring System Sensor Malfunction
C0176 critical
ABS Pump Motor Circuit Open
C0177 critical
ABS Pump Motor Circuit Short to Ground
C0178 critical
ABS Pump Motor Circuit Short to Battery
C0179 critical
ABS Pump Motor Circuit Stalled
C0180 low
Tire Pressure Monitoring System Left Front Sensor Fault
C0181 critical
ABS Pump Motor Speed Sensor Range/Performance
C0182 critical
ABS Pump Motor Speed Sensor Circuit Low
C0183 critical
ABS Pump Motor Speed Sensor Circuit High
C0184 moderate
ABS Pump Motor Speed Sensor Intermittent
C0185 low
Tire Pressure Monitoring System Right Front Sensor Fault
C0186 critical
Lateral Accelerometer Circuit Range/Performance
C0187 critical
Lateral Accelerometer Circuit Low
C0188 critical
Lateral Accelerometer Circuit High
C0189 moderate
Lateral Accelerometer Circuit Intermittent
C0190 low
Tire Pressure Monitoring System Left Rear Sensor Fault
C0191 low
Tire Pressure Monitoring System Right Rear Sensor Fault
C0192 low
TPMS Module Communication Fault
C0193 low
TPMS Antenna Circuit Malfunction
C0194 low
TPMS Sensor Battery Low
C0195 low
TPMS System Not Calibrated
C0196 critical
Yaw Rate Sensor Circuit Malfunction
C0197 moderate
Yaw Rate Sensor Bias Performance
C0198 critical
Yaw Rate Sensor Circuit Open
C0199 critical
Yaw Rate Sensor Circuit Short
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