Diagnostic Code Index
WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC C0035-C0050, C1207-C1210, C1221-C1228, or C1232-C1235 | C0035 04: Left Front Wheel Speed Sensor Circuit Open Circuit C1234: Left Rear Wheel Speed Sensor Circuit Open Circuit C0035 26: Left Front Wheel Speed Sensor Circuit Frequency too Low C1221: Left Front Wheel Speed Sensor Circuit Frequency too Low C0035 27: Left Front Wheel Speed Sensor Circuit Frequency too High C1225: Left Front Wheel Speed Sensor Circuit Frequency too High C0035 0E: Left Front Wheel Speed Sensor Circuit Resistance Below Threshold C1207: Left Front Wheel Speed Sensor Circuit Resistance Below Threshold C0035 1F: Left Front Wheel Speed Sensor Circuit Intermittent C1221: Left Front Wheel Speed Sensor Circuit Intermittent C0040 04: Right Front Wheel Speed Sensor Circuit Open Circuit C1233: Right Front Wheel Speed Sensor Circuit Open Circuit C0040 0E: Right Front Wheel Speed Sensor Circuit Resistance Below Threshold C1208: Right Front Wheel Speed Sensor Circuit Resistance Below Threshold C0040 1F: Right Front Wheel Speed Sensor Circuit Intermittent C1222: Right Front Wheel Speed Sensor Circuit Intermittent C0040 26: Right Front Wheel Speed Sensor Circuit Frequency too Low C1222: Right Front Wheel Speed Sensor Circuit Frequency too Low C0040 27: Right Front Wheel Speed Sensor Circuit Frequency too High C1226: Right Front Wheel Speed Sensor Circuit Frequency too High C0045 04: Left Rear Wheel Speed Sensor Circuit Open Circuit C1234: Left Rear Wheel Speed Sensor Circuit Open Circuit C0045 0E: Left Rear Wheel Speed Sensor Circuit Resistance Below Threshold C1209: Left Rear Wheel Speed Sensor Circuit Resistance Below Threshold C0045 1F: Left Rear Wheel Speed Sensor Circuit Intermittent C1223: Left Rear Wheel Speed Sensor Circuit Intermittent C0045 26: Left Rear Wheel Speed Sensor Circuit Frequency too Low C1223: Left Rear Wheel Speed Sensor Circuit Frequency too Low C0045 27: Left Rear Wheel Speed Sensor Circuit Frequency too High C1227: Left Rear Wheel Speed Sensor Circuit Frequency too High C0050 04: Right Rear Wheel Speed Sensor Circuit Open Circuit C1235: Right Rear Wheel Speed Sensor Circuit Open Circuit C0050 0E: Right Rear Wheel Speed Sensor Circuit Resistance Below Threshold C1210: Right Rear Wheel Speed Sensor Circuit Resistance Below Threshold C0050 1F: Right Rear Wheel Speed Sensor Circuit Intermittent C1224: Right Rear Wheel Speed Sensor Circuit Intermittent C0050 26: Right Rear Wheel Speed Sensor Circuit Frequency too Low C1224: Right Rear Wheel Speed Sensor Circuit Frequency too Low C0050 27: Right Rear Wheel Speed Sensor Circuit Frequency too High C1228: Right Rear Wheel Speed Sensor Circuit Frequency too High |
| DTC C005A | C005A 00: Simultaneous Dropout of Both Wheel Speed Sensors on One Axle |
| DTC C0110 or C12E8 | C0110 61: Pump Motor Circuit Actuator Stuck C12E8: Pump Motor Circuit Actuator Stuck |
| DTC C012A, C128B, C128E, or C12B2-C12B4 | C012A 00: Master Cylinder Pressure Sensor C128E: Master Cylinder Pressure Sensor C012A 01: Master Cylinder Pressure Sensor Short to Battery C12B3: Master Cylinder Pressure Sensor Short to Battery C012A 06: Master Cylinder Pressure Sensor Short to Ground or Open C12B2: Master Cylinder Pressure Sensor Short to Ground or Open C012A 11: Master Cylinder Pressure Sensor Above Maximum Threshold C128B: Master Cylinder Pressure Sensor Above Maximum Threshold C012A 0F: Master Cylinder Pressure Sensor Erratic C12B4: Master Cylinder Pressure Sensor Erratic |
| DTC C012B or C12B6-C12B8 | C012B 01: High Pressure Accumulator Pressure Sensor Short to Battery C12B7: High Pressure Accumulator Pressure Sensor Short to Battery C012B 06: High Pressure Accumulator Pressure Sensor Short to Ground or Open C12B6: High Pressure Accumulator Pressure Sensor Short to Ground or Open C012B 0F: High Pressure Accumulator Pressure Sensor Erratic C12B8: High Pressure Accumulator Pressure Sensor Erratic |
| DTC C012C, C121A, C128C, C128F, C12B9, C12BA, C12BB, or C12F7 | C012C 00: Regenerative Axle Pressure Sensor C121A: Regenerative Axle Pressure Sensor C12F7: Regenerative Axle Pressure Sensor C128F: Regenerative Axle Pressure Sensor C012C 01: Regenerative Axle Pressure Sensor Short to Battery C12BA: Regenerative Axle Pressure Sensor Short to Battery C012C 06: Regenerative Axle Pressure Sensor Short to Ground or Open C12B9: Regenerative Axle Pressure Sensor Short to Ground or Open C012C 11: Regenerative Axle Pressure Sensor Above Maximum Threshold C128C: Regenerative Axle Pressure Sensor Above Maximum Threshold C012C 0F: Regenerative Axle Pressure Sensor Erratic C12BB: Regenerative Axle Pressure Sensor Erratic C121A: Regenerative Axle Pressure Sensor |
| DTC C012D, C120A, C128A, C128D, C12BC, C12BD, or C12BE | C012D 00: Brake Boost Regulation Pressure Sensor C128D: Brake Boost Regulation Pressure Sensor C012D 01: Brake Boost Regulation Pressure Sensor Short to Battery C12BD: Brake Boost Regulation Pressure Sensor Short to Battery C012D 06: Brake Boost Regulation Pressure Sensor Short to Ground or Open C12BC: Brake Boost Regulation Pressure Sensor Short to Ground or Open C012D 11: Brake Boost Regulation Pressure Sensor Above Maximum Threshold C128A: Brake Boost Regulation Pressure Sensor Above Maximum Threshold C012D 5A: Brake Boost Regulation Pressure Sensor Plausibility Failure C120A: Brake Boost Regulation Pressure Sensor Plausibility Failure C012D 0F: Brake Boost Regulation Pressure Sensor Erratic C12BE: Brake Boost Regulation Pressure Sensor Erratic |
| DTC C0161 or C127D | C0161 00: Antilock Brake System (ABS) Brake Switch Circuit C127D: Antilock Brake System (ABS) Brake Switch Circuit C0161 04: Antilock Brake System (ABS) Brake Switch Circuit Open Circuit C0161 0E: Antilock Brake System (ABS) Brake Switch Circuit Resistance Below Threshold |
| DTC C0186 or C0196 | C0186 00: Lateral Accelerometer Circuit C0186 09: Lateral Accelerometer Rate of Change Above Threshold C0186 11: Lateral Accelerometer Circuit Above Maximum Threshold C0186 18: Lateral Accelerometer Circuit Signal Amplitude Less Than Minimum C0186 0A: Lateral Accelerometer Circuit Rate of Change Below Threshold C0186 4B: Lateral Accelerometer Circuit Calibration Not Learned C0196 00: Yaw Rate Circuit C0196 09: Yaw Rate Circuit Rate of Change Above Threshold C0196 11: Yaw Rate Circuit Above Maximum Threshold C0196 18: Yaw Rate Circuit Signal Amplitude Less Than Minimum |
| DTC C0201, C120D, or C120E | C0201 04: Antilock Brake System (ABS) Enable Relay Contact Circuit Open C120D: Antilock Brake System (ABS) Enable Relay Contact Circuit Open C0201 0E: Antilock Brake System (ABS) Enable Relay Contact Circuit Resistance Below Threshold C120E: Antilock Brake System (ABS) Enable Relay Contact Circuit Resistance Below Threshold |
| DTC C0245, C122E | C0245 00: Wheel Speed Sensor Frequency Error C122E: Wheel Speed Sensor Frequency Error |
| DTC C0256, C12E6, or C12E7 | C0256 04: Valve Relay Contact Circuit Open C12E6: Valve Relay Contact Circuit Open C0256 0E: Valve Relay Contact Circuit Resistance Below Threshold C12E7: Valve Relay Contact Circuit Resistance Below Threshold |
| DTC C0277, C120C, C129A, C129B, C129D, C129E, C12B1, or C12F8 | C0277 03: BMC Primary Piston Position Sensor A and B Circuit Performance Voltage Below Threshold C129A: BMC Primary Piston Position Sensor A and B Circuit Performance Voltage Below Threshold C129D: BMC Primary Piston Position Sensor A and B Circuit Performance Voltage Below Threshold C0277 07: BMC Primary Piston Position Sensor A and B Circuit Voltage Above Threshold C129B: BMC Primary Piston Position Sensor A and B Circuit Voltage Above Threshold C129E: BMC Primary Piston Position Sensor A and B Circuit Voltage Above Threshold C0277 5A: BMC Primary Piston Position Sensor A and B Circuit Plausibility Failure C12B1: BMC Primary Piston Position Sensor A and B Circuit Plausibility Failure C12F8: BMC Primary Piston Position Sensor A and B Circuit Plausibility Failure C120C: BMC Primary Piston Position Sensor A and B Circuit Plausibility Failure |
| DTC C0278, C129C, or C129F | C0278 00: BMC Primary Piston Position Sensor Not Calibrated C129C: BMC Primary Piston Position Sensor Not Calibrated C129F: BMC Primary Piston Position Sensor Not Calibrated |
| DTC C0294, C120C, or C12F8 | C0294 00: BMC Primary Piston Position Sensor A and B Correlation C120C: BMC Primary Piston Position Sensor A and B Correlation C12F8: BMC Primary Piston Position Sensor A and B Correlation |
| DTC C0299 or C12FF | C0299 00: Brake Booster Performance C12FF: Brake Booster Performance C0299 31: Brake Booster Performance General Checksum Failure |
| DTC C0455 | C0455 09: Front Steering Position Sensor Circuit Rate of Change Above Threshold C0455 0A: Front Steering Position Sensor Circuit Rate of Change Below Threshold C0455 19: Front Steering Position Sensor Circuit Signal Amplitude Greater Than Maximum C0455 39: Front Steering Position Sensor Circuit Internal Electronic Failure C0455 5A: Front Steering Position Sensor Circuit Plausibility Failure |
| DTC C0552 or C121D | C0552 00: Improper Shutdown C121D: Improper Shutdown |
| DTC C0561 | C0561 4B: System Disabled Information Stored Calibration Not Learned C0561 54: System Disabled Information Stored Temparature High C0561 59: System Disabled Information Stored Component Protection Time Out C0561 71: System Disabled Information Stored Invalid Serial Data Received C0561 72: System Disabled Information Stored Alive Counter Incorrect C0561 74: System Disabled Information Stored Value of Signal Protection Calculation Incorrect C0561 75: System Disabled Information Stored Signal Above Allowable Range |
| DTC C056D, C120C, C121C, C121E, C121F, C123A-C123F, C1255, C1256, C126E, C126F, C127E, C12A7, C12C2, C12C5, C12C6, C12C8, C12CC, C12CF, C12D0-C12DF, or C12E0 | C056D 00: ECU Hardware Performance C120C: ECU Hardware Performance C121C: ECU Hardware Performance C121E: ECU Hardware Performance C123A: ECU Hardware Performance C123B: ECU Hardware Performance C123C: ECU Hardware Performance C123D: ECU Hardware Performance C123E: ECU Hardware Performance C123F: ECU Hardware Performance C1255: ECU Hardware Performance C1256: ECU Hardware Performance C126E: ECU Hardware Performance C127A: ECU Hardware Performance C127B: ECU Hardware Performance C127C: ECU Hardware Performance C12A7: ECU Hardware Performance C12C2: ECU Hardware Performance C12C5: ECU Hardware Performance C12C6: ECU Hardware Performance C12C8: ECU Hardware Performance C12CC: ECU Hardware Performance C12CF: ECU Hardware Performance C12D0: ECU Hardware Performance C12D1: ECU Hardware Performance C12D2: ECU Hardware Performance C12D3: ECU Hardware Performance C12D4: ECU Hardware Performance C12D5:: ECU Hardware Performance C12D6:: ECU Hardware Performance C12D7:: ECU Hardware Performance C12D8:: ECU Hardware Performance C12D9:: ECU Hardware Performance C12DA:: ECU Hardware Performance C12DB:: ECU Hardware Performance C12DC:: ECU Hardware Performance C12DD:: ECU Hardware Performance C12DE:: ECU Hardware Performance C12DF:: ECU Hardware Performance C12E0:: ECU Hardware Performance C12F2:: ECU Hardware Performance C12F3:: ECU Hardware Performance C12F4:: ECU Hardware Performance C12F5:: ECU Hardware Performance C12F6:: ECU Hardware Performance C12FE:: ECU Hardware Performance C056D 3C: ECU Hardware Performance Internal Communication Failure C056D 59: ECU Hardware Performance Circuit/Component Protection Time-out C12E9: ECU Hardware Performance Circuit/Component Protection Time-out |
| DTC C056D, C127A, C127B, C127C, C12E9, C12F2-C12F6, or C12FE | C056D 00: ECU Hardware Performance C127B: ECU Hardware Performance C12F2 - C12F6: ECU Hardware Performance C12FE: ECU Hardware Performance C056D 3C: ECU Hardware Performance Internal Communication Failure C056D 59: ECU Hardware Performance Circuit/Component Protection Time-out C12E9: ECU Hardware Performance Circuit/Component Protection Time-out |
| DTC C056E | C056E 42: ECU Software Performance Calibration Data Set Not Programmed |
| DTC C0574 | C0574 00: Circuit Board Temperature Sensor C0574 11: Circuit Board Temperature Sensor Above Maximum Threshold |
| DTC C0870 or C12E4 | C0870 00: Device Voltage Reference Output Circuit C12E4: Device Voltage Reference Output Circuit |
| DTC C0880, C12E5, or C120F | C0880 00: Device Voltage Reference Output Circuit C12E5: Device Voltage Reference Output Circuit C0880 02: Device Voltage Reference Output Circuit Short to Ground C120F: Device Voltage Reference Output Circuit Short to Ground |
| DTC C0914 | C0914 06: Device Voltage Output 1 Circuit Short to Ground or Open |
| DTC C1120 or C1121 | C1120 00: Left Front Brake Hydraulic Circuit Blocked C1121 00: Left Front Brake Hydraulic Circuit Leaking |
| DTC C1122 or C1123 | C1122 00: Right Front Brake Hydraulic Circuit Blocked C1123 00: Right Front Brake Hydraulic Circuit Leaking |
| DTC C1124-C1126 | C1124 00: Base Brake Hydraulic Circuit Normally Open Valve Actuator Stuck Closed C1126 00: Base Brake Proportioning Valve Hydraulic Circuit Blocked |
| DTC P0856 | P0856: Engine Control Module (ECM) Traction Control Torque Request Circuit |