OBD-II Code Decoder

Search the licensed P, B, C, and U reference library by code, definition, system, or manufacturer. Reference-only results are not a complete diagnosis.

  • 12,128 OBD-II codes
  • 18,805 reference definitions
  • 16,185 publicly searchable across 10,181 codes

Review-withheld definitions are excluded; lookup records are not published diagnostic pages.

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Matching definitions: 499 · Unique codes: 498.

Code Meaning System Scope Manufacturer Severity
C0653 Left Front Wheel Speed Sensor B Circuit Low Chassis Generic Not manufacturer-specific Not classified
C0654 Left Front Wheel Speed Sensor B Circuit High Chassis Generic Not manufacturer-specific Not classified
C0655 Left Front Wheel Speed Sensor B Intermittent/Erratic Chassis Generic Not manufacturer-specific Not classified
C0656 Left Front Wheel Speed Sensor B Correlation Chassis Generic Not manufacturer-specific Not classified
C0657 Left Front Wheel Speed Sensor B Incorrect Component Installed Chassis Generic Not manufacturer-specific Not classified
C0658 Right Front Wheel Speed Sensor B Circuit/Open Chassis Generic Not manufacturer-specific Not classified
C0659 Right Front Wheel Speed Sensor B Range/Performance Chassis Generic Not manufacturer-specific Not classified
C065A Right Front Wheel Speed Sensor B Circuit Low Chassis Generic Not manufacturer-specific Not classified
C065B Right Front Wheel Speed Sensor BCircuit High Chassis Generic Not manufacturer-specific Not classified
C065C Right Front Wheel Speed Sensor B Intermittent/Erratic Chassis Generic Not manufacturer-specific Not classified
C065D Right Front Wheel Speed Sensor B Correlation Chassis Generic Not manufacturer-specific Not classified
C065E Right Front Wheel Speed Sensor B Incorrect Component Installed Chassis Generic Not manufacturer-specific Not classified
C065F Left Rear Wheel Speed Sensor B Circuit/Open Chassis Generic Not manufacturer-specific Not classified
C0660 Left Rear Wheel Speed Sensor B Range/Performance Chassis Generic Not manufacturer-specific Not classified
C0661 Left Rear Wheel Speed Sensor B Circuit Low Chassis Generic Not manufacturer-specific Not classified
C0662 Left Rear Wheel Speed Sensor B Circuit High Chassis Generic Not manufacturer-specific Not classified
C0663 Left Rear Wheel Speed Sensor B Intermittent/Erratic Chassis Generic Not manufacturer-specific Not classified
C0664 Left Rear Wheel Speed Sensor B Correlation Chassis Generic Not manufacturer-specific Not classified
C0665 Left Rear Wheel Speed Sensor B Incorrect Component Installed Chassis Generic Not manufacturer-specific Not classified
C0666 Right Rear Wheel Speed Sensor B Circuit/Open Chassis Generic Not manufacturer-specific Not classified
C0667 Right Rear Wheel Speed Sensor B Range/Performance Chassis Generic Not manufacturer-specific Not classified
C0668 Right Rear Wheel Speed Sensor B Circuit Low Chassis Generic Not manufacturer-specific Not classified
C0669 Right Rear Wheel Speed Sensor B Circuit High Chassis Generic Not manufacturer-specific Not classified
C066A Right Rear Wheel Speed Sensor B Intermittent/Erratic Chassis Generic Not manufacturer-specific Not classified
C066B Right Rear Wheel Speed Sensor B Correlation Chassis Generic Not manufacturer-specific Not classified
C066C Right Rear Wheel Speed Sensor B Incorrect Component Installed Chassis Generic Not manufacturer-specific Not classified
C066D Service/Park Brake Chamber Pressure Sensor Chassis Generic Not manufacturer-specific Not classified
C066E Service/Park Brake Chamber Pressure Too High Chassis Generic Not manufacturer-specific Not classified
C066F Service/Park Brake Chamber Pressure Too Low Chassis Generic Not manufacturer-specific Not classified
C1000 Manufacturer Controlled DTC Chassis Generic Not manufacturer-specific Not classified
C1095 ABS Hydraulic Pump Motor Circuit Failure Chassis Generic Not manufacturer-specific Not classified
C1096 ABS Hydraulic Pump Motor Circuit Open Chassis Generic Not manufacturer-specific Not classified
C1097 ABS Hydraulic Pump Motor Circuit Short To Ground Chassis Generic Not manufacturer-specific Not classified
C1098 ABS Hydraulic Pump Motor Circuit Short To Battery Chassis Generic Not manufacturer-specific Not classified
C1100 ABS Pump Switch Circuit Failure - Generic Chassis Generic Not manufacturer-specific Not classified
C1198 ABS Inlet Valve Coil LF Circuit Failure Chassis Generic Not manufacturer-specific Not classified
C1199 ABS Inlet Valve Coil LF Circuit Open Chassis Generic Not manufacturer-specific Not classified
C1200 ABS Inlet Valve Coil LF Circuit Short To Battery Chassis Generic Not manufacturer-specific Not classified
C1201 ABS Inlet Valve Coil LF Circuit Short To Ground Chassis Generic Not manufacturer-specific Not classified
C1223 Lamp Brake Warning Output Circuit Failure Chassis Generic Not manufacturer-specific Not classified
C1224 Lamp Brake Warning Output Circuit Open Chassis Generic Not manufacturer-specific Not classified
C1225 Lamp Brake Warning Output Circuit Short To Battery Chassis Generic Not manufacturer-specific Not classified
C1226 Lamp Brake Warning Output Circuit Short To Ground Chassis Generic Not manufacturer-specific Not classified
C1238 ABS Hydraulic Pressure Differential Switch Input Circuit Failure Chassis Generic Not manufacturer-specific Not classified
C1239 ABS Hydraulic Pressure Differential Switch Input Open Circuit Chassis Generic Not manufacturer-specific Not classified
C1240 ABS Hydraulic Pressure Differential Switch Input Short Circuit To Battery Chassis Generic Not manufacturer-specific Not classified
C1241 ABS Hydraulic Pressure Differential Switch Input Short Circuit To Ground Chassis Generic Not manufacturer-specific Not classified
C1500 Transfer Case Contact Plate "B" Encoder Circuit Failure Chassis Generic Not manufacturer-specific Not classified
C2000 Manufacturer Controlled DTC Chassis Generic Not manufacturer-specific Not classified