Diagnostic Code Index
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B1000 | B1000 00: Electronic Control Unit (ECU) Performance No Additional Information Available B1000 04: Side Object Detection Performance - RAM Failure B1000 08: Electronic Control Unit (ECU) Performance Signal Invalid B1000 12: Electronic Control Unit (ECU) Performance Below Minimum Threshold B1000 31: Electronic Control Unit (ECU) General Checksum Problem B1000 33: Electronic Control Unit (ECU) Performance Special Memory Failure B1000 34: Electronic Control Unit (ECU) Performance RAM Integrity B1000 35: Electronic Control Unit (ECU) Performance ROM Integrity B1000 36: Electronic Control Unit (ECU) Performance EEPROM Integrity B1000 37: Electronic Control Unit (ECU) Performance Watchdog / Safety Failure B1000 38: Electronic Control Unit (ECU) Performance Supervision Software Failure B1000 39: Electronic Control Unit (ECU) Performance Internal Electronic Failure B1000 43: Electronic Control Unit (ECU) Performance EEPROM Error B1000 46: Side Object Detection Performance - Invalid Configuration B1000 56: Electronic Control Unit (ECU) Performance Allowable Number of Transitions/ Events Exceeded B1000 57: Electronic Control Unit (ECU) Performance B1000 73: Electronic Control Unit (ECU) Performance Parity Error B1000 0F: Electronic Control Unit (ECU) Performance Erratic B1000 2B: Electronic Control Unit (ECU) Performance Missing Reference B1000 2C: Electronic Control Unit Performance Reserved B1000 3B: Electronic Control Unit (ECU) Performance Internal Self Test Failed B1000 3C: Electronic Control Unit (ECU) Performance Internal Communications Failure B1000 4A: Side Object Detection Performance - PROM Checksum Error B1000 F0: Side Object Detection RF Transmit Chain Failed B1000 F1: Side Object Detection RF Receive Chain Failed B1000 F2: Side Object Detection Frequency Calibration Failure B1000 F3: Side Object Detection Inter-Processor Communication Failed |
| DTC B1001 | B1001 00: Option Configuration Error B1001 45: Option Configuration Error Variant Not Programmed B1001 46: Option Configuration Error B1001 4B: Option Configuration Error Calibration Not Learned |
| DTC B137A | B137A 01: Hybrid Accessory Wake Up Circuit - Short to Battery B137A 06: Hybrid Accessory Wake Up Circuit - Short to Ground or Open |
| DTC B137B | B137B 06: Accessory Power Module Wake Up Circuit - short to ground or open |
| DTC C0550 | C0550 00: Electronic Control Unit (ECU) Performance C0550 31: Electronic Control Unit (ECU) Performance C0550 32: ECU Performance General Memory Failure C0550 34: ECU Malfunction RAM Failure C0550 35: ECU Malfunction ROM Failure C0550 36: ECU Malfunction EEPROM Failure C0550 37: ECU Malfunction Watch Dog failure C0550 38: ECU Performance Supervision Software Failure C0550 39: ECU Performance Internal Electronic Failure/Discard C0550 4B: ECU Internal Fault |
| DTC U0020 | U0020 00: Low Speed CAN Communication Bus Performance |
| DTC U0073 or U2100 | U0073 00: Control Module Communication Bus Off U0073 71: ECU HS Bus Off U0073 72: ECU LS Bus Off U2100 00: Controller Area Network (CAN) Bus Communication U2100 47: Controller Area Network (CAN) Bus Communication |
| DTC U0074 | U0074 00: Control Module Communication Bus B Off |
| DTC U0100-U0299 (HP2) | U0100 00: Lost Communication With ECM/PCM U0101 00: Lost Communication With TCM U0102 00: Lost Communication With Transfer Case Control Module U0104 00: Lost Communication With Cruise Control Module U0109 00: Lost Communication With Fuel Pump Control Module U010F 00: Lost Communication With Air Conditioning Control Module U0121 00: Lost Communication With Anti-Lock Brake System (ABS) Control Module U0122 00: Lost Communication With Vehicle Dynamics Control Module U0125 00: Lost Communication With Multi-axis Acceleration Sensor Module U0129 00: Lost Communication With Brake System Control Module U0131 00: Lost Communication With Power Steering Control Module U0132 00: Lost Communication With Ride Level Control Module U0137 00: Lost Communication With Trailer Brake Control Module U0140 00: Lost Communication With Body Control Module U0141 00: Lost Communication With Body Control Module A U0146 00: Lost Communication With Gateway "A" U0151 00: Lost Communication With Restraints Control Module U0151 71: Lost Communication With Restraints Control Module Invalid Serial Data Received U0151 7F: Lost Communication With Restraints Control Module Erratic U0155 00: Lost Communication With Instrument Panel Cluster (IPC) Control Module U0156 00: Lost Communication With Information Center A (DIC) U0159 00: Lost Communication With Parking Assist Control Module U0160 00: Lost Communication With Audible Alert Control Module U0164 00: Lost Communication With HVAC Control Module U0165 00: Lost Communication With HVAC Control Module - Rear U0168 00: Lost Communication With Vehicle Security Control Module U0170 00: Lost Communication With Restraints System Sensor A (PPS) U0172 00: Lost Communication With Rollover Sensor U0184 00: Lost Communication With Radio U0186 00: Lost Communication With Audio Amplifier U0194 00: Lost Communication With Digital Radio Receiver (DRR) U0198 00: Lost Communication With Telematic Control Module U0199 00: Lost Communication With Door Control Module A (DDM) U0200 00: Lost Communication With Door Control Module B (PDM) U0208 00: Lost Communication With Seat Control Module A (DSM/MSM) U0209 00: Lost Communication With Seat Control Module B (HVSM) U0210 00: Lost Communication With Seat Control Module C (RHVSM) U0214 00: Lost Communication With Remote Function Actuation U0241 00: Lost Communication With Headlamp Control Module A U0249 00: Lost Communication With Entertainment Control Module - Rear B U0293 00: Lost Communication With Hybrid Powertrain Control Module U0298 00: Lost Communication With DC to DC Converter Control Module A |
| DTC U0100-U0299 (Except HP2) | U0100 00: Lost Communication With ECM/PCM U0101 00: Lost Communication With TCM U0102 00: Lost Communication With Transfer Case Control Module U0104 00: Lost Communication With Cruise Control Module U0109 00: Lost Communication With Fuel Pump Control Module U0117 00: Lost Communication With Electrical PTO Control Module U0121 00: Lost Communication With Anti-Lock Brake System (ABS) Control Module U0122 00: Lost Communication With Vehicle Dynamics Control Module U0131 00: Lost Communication With Power Steering Control Module U0132 00: Lost Communication With Ride Level Control Module U0134 00: Lost Communication With Power Steering Control Module - Rear U0136 00: Lost Communication With Differential Control Module - Rear U0140 00: Lost Communication With Body Control Module U0141 00: Lost Communication With Body Control Module A U0151 00: Lost Communication With Restraints Control Module U0151 71: Lost Communication With Restraints Control Module Invalid Serial Data Received U0151 7F: Lost Communication With Restraints Control Module Erratic U0155 00: Lost Communication With Instrument Panel Cluster (IPC) Control Module U0156 00: Lost Communication With Information Center A (DIC) U0158 00: Lost Communication With Head Up Display U0159 00: Lost Communication With Parking Assist Control Module U0160 00: Lost Communication With Audible Alert Control Module U0164 00: Lost Communication With HVAC Control Module U0165 00: Lost Communication With HVAC Control Module - Rear U0168 00: Lost Communication With Vehicle Security Control Module U0170 00: Lost Communication With Restraints System Sensor A (PPS) U0172 00: Lost Communication With Rollover Sensor U0184 00: Lost Communication With Radio U0186 00: Lost Communication With Audio Amplifier U0291 00: Lost Communication With Television U0194 00: Lost Communication With Digital Radio Receiver (DRR) U0198 00: Lost Communication With Telematic Control Module U0199 00: Lost Communication With Door Control Module A (DDM) U0200 00: Lost Communication With Door Control Module B (PDM) U0208 00: Lost Communication With Seat Control Module A (DSM/MSM) U0209 00: Lost Communication With Seat Control Module B (HVSM) U0210 00: Lost Communication With Seat Control Module C (RHVSM) U0214 00: Lost Communication With Remote Function Actuation U0230 00: Lost Communication With Rear Gate Module U0232 00: Lost Communications With Side Object Detection (SOD) Module - Left U0233 00: Lost Communications With Side Object Detection (SOD) Module - Right U0236 00: Lost Communications With Column Locking Module (CLM) U0241 00: Lost Communication With Headlamp Control Module A U0249 00: Lost Communication With Entertainment Control Module - Rear B |
| DTC C126C, C126D, C12E3, or U180F | C126C: Control Module Communication Bus B Off C126D: Control Module Communication Bus B Off C12E3: Control Module Communication Bus B Off U180F: Control Module Communication Bus B Off |
| DTC U180F | U180F: Control Module Communication Bus B Off |
| DTC U1812 | U1812 00: Battery Energy Control Module Bus B High Speed Communication Enable Circuit Low |
| DTC U1813 | U1813 00: Battery Energy Control Module Bus B High Speed Communication Enable Circuit High |
| DTC U1814 | U1814 00: Powertrain High Speed Communication Enable Circuit |
| DTC U1815 | U1815 00: Lost Communication With Drive Motor Control Module "A" on Bus "B" |
| DTC U1816 | U1816 00: Lost Communication With Drive Motor Control Module "B" on Bus "B" |
| DTC U1817 | U1817 00: Lost Communication With Hybrid Powertrain Control Module on Bus "B" |
| DTC U1818 | U1818 00: Lost Communication With ECM/PCM A on Bus B |
| DTC U1820 | U1820 00: Lost Communication with Brake System Control Module on Bus B |
| DTC U1821 | U1821 00: Lost Communication With Battery Energy Control Module on Bus B |
| DTC U182A | U182A 00: Lost Communication With DC to DC Converter Control Module A on Bus B |
| DTC U1842 | U1842: Lost Communication With ECM/PCM |
| DTC U1843 | U1843: Lost Communication With ECM/PCM |
| DTC U1862 | U1862 00: Battery Energy Control Module Lost Communication With Communications Gateway Module |
| DTC U1866 | U1866 00: Battery Energy Control Module Lost Communication With Body Control Module |
| DTC U186A | U186A: Lost Communication With Transfer Case Control Module |
| DTC U186B | U186B: Lost Communication With TCM |
| DTC U1875 | U1875 00: Drive Motor A Control Module Lost Communication With Battery Energy Control Module |
| DTC U1876 | U1876 00: Drive Motor Control Module A Lost Communication With Engine Control Module (ECM) |
| DTC U1878 | U1878 00: Drive Motor B Control Module Lost Communication With Battery Energy Control Module |
| DTC U1879 | U1879 00: Drive Motor Control Module B Lost Communication With Engine Control Module (ECM) |
| DTC U1885 | U1885 00: Battery Energy Control Module Lost Communication With Hybrid Powertrain Control Module |
| DTC U1886 | U1886 00: Battery Energy Control Module Lost Communication With Engine Control Module (ECM)/Powertrain Control Module (PCM) |
| DTC U1888 | U1888 00: Lost Communication with Battery Pack |
| DTC U189A | U189A 00: DC to DC Converter Control Module A Lost Communication With Hybrid Powertrain Control Module |
| DTC U2099 | U2099 00: High Speed Communication Enable Circuit |
| DTC U209A | U209A 00: High Speed Communication Enable Circuit Low |
| DTC U209D | U209D 00: Battery Energy Control Module High Speed Communication Enable Circuit High |
| DTC U2100 | U2100 00: Controller Area Network (CAN) Bus Communication |
| DTC U2103 | U2103 00: Fewer Controllers On Than Programmed |
| DTC U2105-U2199 | U2142 00: Lost Communication With Yaw Rate Sensor (YRS) |