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Consumer Safety

Product Safety9,700+ CPSC product recalls Food Safety28,600+ FDA food recalls Pet Safety1.3M FDA animal adverse events Drug Safety17,500+ FDA drug recalls Device Safety38,400+ FDA device recalls Workplace Safety102,900+ OSHA injury reports Brand HistoryRecall lookup by company

Infrastructure

Bridge Safety624,000 bridge inspections Aviation Safety30,000+ NTSB aviation events Dam Safety92,600 dam safety records Water Safety433,000+ public water systems Railroad Safety438,000+ rail crossings Pipeline Safety8,800+ pipeline incidents State DashboardsSafety grades for all 50 states ZIP ReportAny 5-digit ZIP across 9 datasets

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Chassis Codes

1,008 OBD-II diagnostic trouble codes in this category.

Showing page 6 of 11 (1,008 codes total)

Code Description Subsystem Severity
C0660 Left Rear Wheel Speed Sensor B Range/Performance ABS Sensor High
C0661 Left Rear Wheel Speed Sensor B Circuit Low ABS Sensor High
C0662 Left Rear Wheel Speed Sensor B Circuit High ABS Sensor High
C0663 Left Rear Wheel Speed Sensor B Intermittent/Erratic ABS Sensor High
C0664 Left Rear Wheel Speed Sensor B Correlation ABS Sensor High
C0665 Left Rear Wheel Speed Sensor B Incorrect Component Installed ABS Sensor High
C0666 Right Rear Wheel Speed Sensor B Circuit/Open ABS Sensor High
C0667 Right Rear Wheel Speed Sensor B Range/Performance ABS Sensor High
C0668 Right Rear Wheel Speed Sensor B Circuit Low ABS Sensor High
C0669 Right Rear Wheel Speed Sensor B Circuit High ABS Sensor High
C066A Right Rear Wheel Speed Sensor B Intermittent/Erratic ABS Sensor High
C066B Right Rear Wheel Speed Sensor B Correlation ABS Sensor High
C066C Right Rear Wheel Speed Sensor B Incorrect Component Installed ABS Sensor High
C066D Service/Park Brake Chamber Pressure Sensor Chassis Control Medium
C066E Service/Park Brake Chamber Pressure Too High Chassis Control Medium
C066F Service/Park Brake Chamber Pressure Too Low Chassis Control Medium
C1000 Manufacturer Controlled DTC Chassis Control Medium
C1091 Speed Wheel Sensor All Coherency Failure Chassis Control High
C1095 ABS Hydraulic Pump Motor Circuit ABS Hydraulic Critical
C1096 ABS Hydraulic Pump Motor Circuit Open ABS Sensor High
C1097 ABS Hydraulic Pump Motor Circuit Short To Ground ABS Sensor High
C1098 ABS Hydraulic Pump Motor Circuit Short To Battery ABS Sensor High
C1100 ABS Pump Switch Circuit Failure - Generic ABS Sensor High
C1101 ABS Hydraulic Valve Circuit Failure ABS Critical
C1102 ABS Acceleration Switch Circuit Failure ABS Critical
C1103 ABS Hydraulic Brake Switch Circuit Failure ABS Critical
C1104 Traction Control Active Lamp - Circuit Short to Battery Stability Control High
C1105 Traction Control Disable Lamp - Circuit Short to Battery Stability Control High
C1106 Traction Control Disable Switch Circuit Short to Battery Stability Control High
C1107 ABS Function Enabled Input Circuit Failure ABS Critical
C1109 Speed Control Actuator Assembly Cable Release Failure Chassis Control High
C1110 ABS Power Relay Coil Circuit Failure ABS Critical
C1111 ABS Power Relay Coil Open Circuit ABS Critical
C1112 ABS Power Relay Coil Short Circuit To Ground ABS Critical
C1113 ABS Power Relay Coil Short Circuit To Battery ABS Critical
C1114 ABS Power Relay Output Short Circuit To Ground ABS Critical
C1115 ABS Power Relay Output Short Circuit To Battery ABS Critical
C1116 Starter Motor Circuit Failure Chassis Control High
C1117 RPM Input Circuit Failure Chassis Control High
C1123 Vehicle Speed Sensor Input Short to Battery Chassis Control High
C1124 Input shaft speed signal missing/faulted Chassis Control High
C1125 Brake Fluid Level Sensor Input Circuit Failure Brakes Critical
C1126 Cruise Control Command Switch Assembly Circuit Failure Chassis Control High
C1127 Cruise Control Deactivator Brake Switch Circuit Failure Brakes Critical
C1132 Clutch position ckt short to ground Chassis Control High
C1133 Clutch position ckt short to battery Chassis Control High
C1134 Gear Shift position short to ground Chassis Control High
C1135 Gear Shift position short to battery Chassis Control High
C1136 Gear Select position short to ground Chassis Control High
C1137 ECU is Defective Chassis Control High
C1138 Gear Select position short to Battery Chassis Control High
C1139 Wheel Speed Sensor Center Tone Ring Missing Tooth Fault Wheel Speed Sensor High
C1140 Hydraulic Base Brake Failure Brakes Critical
C1141 Wheel Speed Sensor LF Tone Ring Tooth Missing Fault Wheel Speed Sensor High
C1142 Wheel Speed Sensor RF Tone Ring Tooth Missing Fault Wheel Speed Sensor High
C1143 Wheel Speed Sensor LR Tone Ring Tooth Missing Fault Wheel Speed Sensor High
C1144 Wheel Speed Sensor RR Tone Ring Tooth Missing Fault Wheel Speed Sensor High
C1145 Right Front Wheel Speed Sensor Input Circuit ABS Sensor High
C1146 Speed Wheel Sensor RF Circuit Open Chassis Control High
C1148 Speed Wheel Sensor RF Coherency Fault Chassis Control High
C1149 Hydraulic Fluid Pressure/ Flow Circuit Failure Chassis Control High
C1150 Two Speed Rear Axle Input Switch Circuit Short to Vbatt Chassis Control High
C1155 Left Front Wheel Speed Sensor Input Circuit ABS Sensor High
C1156 Speed Wheel Sensor LF Circuit Open Chassis Control High
C1157 Park Brake Actuator Assembly Switch Applied Circuit Failure Brakes Critical
C1158 Speed Wheel Sensor LF Coherency Fault Chassis Control High
C1159 Hydraulic Fluid Pressure/ Flow Circuit Short to Gnd Chassis Control High
C1161 Air Pressure Low Circuit Short to Gnd Chassis Control High
C1162 Park Brake Switch # 2 Released Circuit Failure Brakes Critical
C1163 Park Brake Switch # 2 Applied Circuit Short to Gnd Brakes Critical
C1164 Park Brake Actuator Assembly Switch Circuit Failure Brakes Critical
C1165 Right Rear Wheel Speed Sensor Input Circuit ABS Sensor High
C1166 Speed Wheel Sensor RR Input Open Circuit Chassis Control High
C1167 Park Brake Actuator Assembly Switch Released Circuit Short to Gnd Brakes Critical
C1168 Speed Wheel Sensor RR Coherency Fault Chassis Control High
C1169 ABS Fluid Dumping Exceeds Maximum Timing ABS Critical
C1170 PRNDL Switch Circuit Failure Chassis Control High
C1172 Park Brake Switch # 1 Applied Circuit Failure Brakes Critical
C1173 Park Brake Switch # 1 Released Circuit Short to Gnd Brakes Critical
C1174 Park Brake Switch # 2 Applied Circuit Failure Brakes Critical
C1175 Left Rear Wheel Speed Sensor Input Circuit ABS Sensor High
C1176 Speed Wheel Sensor LR Circuit Open Chassis Control High
C1177 Park Brake Actuator Assembly Switch Released Circuit Failure Brakes Critical
C1178 Speed Wheel Sensor LR Coherency Fault Chassis Control High
C1179 Speed Control Actuator Assembly Cable Slack Failure Chassis Control High
C1180 Park Brake Valve Solenoid #1 Sense Input Circuit Failure Brakes Critical
C1181 Park Brake Valve Solenoid #1 Sense Input Circuit Short to Gound Brakes Critical
C1182 Park Lamp Flash Relay Circuit Failure Parking System High
C1183 Park Lamp Flash Relay Circuit Short to Battery Parking System High
C1184 ABS System Is Not Operational ABS Critical
C1185 ABS Power Relay Output Circuit ABS Module Critical
C1186 ABS Power Relay Coil Circuit ABS Module Critical
C1187 Brake Fluid Level Sensor Input Open Circuit Brakes Critical
C1188 Brake Fluid Level Sensor Input Short Circuit To Battery Brakes Critical
C1189 Brake Fluid Level Sensor Input Short Circuit To Ground Brakes Critical
C1190 Speed Wheel Sensor LF Input Short Circuit To Battery Chassis Control High
C1191 Speed Wheel Sensor LF Input Short Circuit To Ground Chassis Control High
C1192 Speed Wheel Sensor RF Input Short Circuit To Battery Chassis Control High
C1193 Speed Wheel Sensor RF Input Short Circuit To Ground Chassis Control High
C1194 ABS Outlet Valve Coil LF Circuit Failure ABS Critical
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About Chassis Codes

This page lists all 1,008 OBD-II diagnostic trouble codes classified under the Chassis category. These codes are stored by your vehicle's onboard computer when a sensor detects a malfunction in the chassis system. Each code begins with a letter indicating the system (P for Powertrain, B for Body, C for Chassis, U for Network) followed by four digits that identify the specific fault.

When your check engine light comes on, an OBD-II scanner reads these stored codes to help pinpoint the problem. Generic codes (where the second digit is 0) follow the SAE J2012 standard and mean the same thing on every vehicle. Manufacturer-specific codes (where the second digit is 1) may have different meanings depending on the vehicle brand.

Click any code in the table above to see its full description, possible causes, common symptoms, and step-by-step repair guidance. Use the search box to quickly find a specific code within this category.