Diagnostic Code Index
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B1000 | B1000 XX: Electronic Control Unit |
| DTC B1001 | B1001 XX: Option Configuration |
| DTC B1016 | B1016 XX: Vehicle Identification Number Information Not Programmed |
| DTC B101D | B101D XX: ECU Hardware |
| DTC B101E | B101E XX: ECU Software |
| DTC C0550 | C0550 XX: Electronic Control Unit |
| DTC C056D | C056D XX: Electronic Control Unit Hardware |
| DTC C056E | C056E XX: Electronic Control Unit Software |
| DTC P0601-P0604, P0606, or P062F | P0601 00: Control Module Read Only Memory Performance P0602 00: Control Module Not Programmed P0603 00: Control Module Long Term Memory Reset P0604 00: Control Module Random Access Memory Performance P0606 00: Control Module Processor Performance P062F 00: Control Module Long Term Memory Performance |
| DTC P06E4 | P06E4 00: Control Module Wake-Up Circuit Performance |
| DTC P0A1F, P1A05, or P1A06 | P0A1F 00: Battery Energy Control Module Internal Performance P1A05 00: Battery Energy Control Module Random Access Memory (RAM) P1A06 00: Battery Energy Control Module Read Only Memory (ROM) |
| DTC P16B7 | P16B7 00: Electric A/C Compressor Control Module Wake-Up Circuit Performance |
| DTC P16B8-P16BA | P16B8 00: Electric A/C Compressor Control Module Random Access Memory Performance P16B9 00: Electric A/C Compressor Control Module Read Only Memory Performance P16BA 00: Electric A/C Compressor Control Module Long Term Memory Performance |
| DTC P16C1-P16C5 | P16C1 00: Battery Charger Control Module Read Only Memory Performance P16C2 00: Battery Charger Control Module Random Access Memory Performance P16C3 00: Battery Charger Control Module Long Term Memory Performance P16C4 00: Battery Charger Control Module Serial Peripheral Interface (SPI) Bus 1 P16C5 00: Battery Charger Control Module Serial Peripheral Interface (SPI) Bus 2 |
| DTC P16C6 | P16C6 00: Battery Charger Control Module Wake-Up Circuit Performance |
| DTC P1E8E-P1E91 | P1E8E 00: Hybrid/EV Battery Interface Control Module 1 Performance P1E8F 00: Hybrid/EV Battery Interface Control Module 1 Random Access Memory Performance P1E90 00: Hybrid/EV Battery Interface Control Module 1 Read Only Memory Performance P1E91 00: Hybrid/EV Battery Interface Control Module 1 Long Term Memory Performance |
| DTC P1E94-P1E97 | P1E94 00: Hybrid/EV Battery Interface Control Module 2 Performance P1E95 00: Hybrid/EV Battery Interface Control Module 2 Random Access Memory Performance P1E96 00: Hybrid/EV Battery Interface Control Module 2 Read Only Memory Performance P1E97 00: Hybrid/EV Battery Interface Control Module 2 Long Term Memory Performance |
| DTC P1E9A-P1E9D | P1E9A 00: Hybrid/EV Battery Interface Control Module 3 Performance P1E9B 00: Hybrid/EV Battery Interface Control Module 3 Random Access Memory Performance P1E9C 00: Hybrid/EV Battery Interface Control Module 3 Read Only Memory Performance P1E9D 00: Hybrid/EV Battery Interface Control Module 3 Long Term Memory Performance |
| DTC P1EA0-P1EA3 | P1EA0 00: Hybrid/EV Battery Interface Control Module 4 Performance P1EA1 00: Hybrid/EV Battery Interface Control Module 4 Random Access Memory Performance P1EA2 00: Hybrid/EV Battery Interface Control Module 4 Read Only Memory Performance P1EA3 00: Hybrid/EV Battery Interface Control Module 4 Long Term Memory Performance |
| DTC P1EB1 | P1EB1 00: Hybrid/EV Battery Interface Control Module Software Incompatible |
| DTC P1EB2-P1EB5 | P1EB2 00: Hybrid/EV Battery Interface Control Module 1 Not Programmed P1EB3 00: Hybrid/EV Battery Interface Control Module 2 Not Programmed P1EB4 00: Hybrid/EV Battery Interface Control Module 3 Not Programmed P1EB5 00: Hybrid/EV Battery Interface Control Module 4 Not Programmed |
| DTC P1EB9 | P1EB9 00: High Voltage Energy Communication Bus Enable Circuit |
| DTC P1EC1 or P1EC2 | P1EC1 00: Battery Energy Control Module High Voltage Energy Communication Bus Enable Circuit Low Voltage P1EC2 00: Battery Energy Control Module High Voltage Energy Communication Bus Enable Circuit High Voltage |
| DTC P1EF8 | P1EF8 00: Battery Charger Control Module High Voltage Energy Communication Bus Enable Circuit Low Voltage |
| DTC P1F06-P1F09 | P1F06 00: Hybrid/EV Battery Interface Control Module 1 Processor Performance P1F07 00: Hybrid/EV Battery Interface Control Module 2 Processor Performance P1F08 00: Hybrid/EV Battery Interface Control Module 3 Processor Performance P1F09 00: Hybrid/EV Battery Interface Control Module 4 Processor Performance |
| DTC P262B | P262B 00: Control Module Power Off Timer Performance |
| DTC U0001 | U0001 00: High Speed CAN Communication Bus |
| DTC U0002 | U0002: High Speed CAN Bus |
| 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 Powertrain Expansion Communication Bus Off |
| DTC U0077 | U0077 00: Control Module Chassis Expansion Communication Bus Off |
| DTC U0078 | U0078 00: Control Module Low Speed Communication Bus Off |
| DTC U007A | U007A 00: Control Module High Voltage Energy Management Communication Bus Off |
| DTC U0100-U02FF | The serial data circuit is the means by which the control modules in the vehicle communicate with each other. Once the scan tool is connected to the serial data circuit through the data link connector (DLC) on the driver side, the scan tool can be used to monitor each control module for diagnostic purposes and to check for diagnostic trouble codes (DTCs). The auxiliary data connector on the passenger side is used for expansion busses. When the ignition switch is in RUN, each control module communicating on the serial data circuit sends a state of health (SOH) message to ensure that the control module is operating properly. When a control module stops communicating on the serial data circuit, for example if the control module loses power or ground, the SOH message it normally sends on the serial data circuit disappears. Other control modules on the serial data circuit, which expect to receive that SOH message, detect its absence; those control modules in turn set a DTC associated with the loss of SOH of the non-communicating control module. The DTC is unique to the control module which is not communicating and one or more control modules may set the same exact code. A loss of serial data communications DTC does not represent a failure of the control modules that contain the stored code. |
| DTC U0300-U0336 | U0301 00: Software Incompatibility with Engine Control Module U0302 00: Software Incompatibility with Transmission Control Module U0315 00: Software Incompatibility with Electronic Brake Control Module |
| DTC U0400-U05FF | Some control modules are constantly receiving information from other control modules through serial data communication network. The invalid data code will be set when a receiving control module detects a discrepancy in information it receives from another control module causing its integrity to be questioned. The symptom byte listed in the DTC Descriptor is for engineering reference only. No external circuit diagnosis is involved. |
| DTC U1500-U15BF | The serial data is transmitted over a Local Interconnect Network (LIN) single wire network circuit bus between a master control module and other control modules within a particular subsystem. If serial data communication is lost between any of the control modules on the LIN bus network, a no communication code against the non-communicating control module will be set. A master control module is the one that reports the non communication code. Note: a loss of serial data communications DTC does not represent a failure of the master control module that set it. |
| DTC U1793 | U1793 00: 14V Power Module Lost Communication with Hybrid Powertrain Control Module on Powertrain Expansion Communication Bus |
| DTC U1795 | U1795 00: 14V Power Module Powertrain Expansion Communication Bus Off |
| DTC U179A | U179A 00: Lost Communication with Hybrid Powertrain Control Module 2 |
| DTC U1803 | U1803 00: Lost Communication with Hybrid Powertrain Control Module 2 |
| DTC U1806 | U1806 00: Battery Energy Control Module High Voltage Energy Management Communication Bus Off |
| DTC U1807 | U1807 00: Battery Charger Control Module High Voltage Energy Communication Bus Off |
| DTC U180A | U180A 00: Electric A/C Compressor Control Module High Speed Communication Bus Off |
| DTC U180B | U180B 00: Battery Energy Control Module High Speed GMLAN Communication Bus Off |
| DTC U180C | U180C 00: Battery Charger Control Module High Speed GMLAN Communication Bus Off |
| DTC U180D | U180D 00: Electronic Brake Control Module Chassis Expansion Communication Bus Off |
| DTC U1814 | U1814 00: Powertrain Wake Up Communication Circuit |
| DTC U1817 | U1817 00: Lost Communication with Hybrid Powertrain Control Module on Powertrain Expansion Communication Bus |
| DTC U1818 | U1818 00: Lost Communication with Engine Control Module on Powertrain Expansion Communication Bus |
| DTC U1821 | U1821 00: Lost Communication with 14V Power Module on Powertrain Expansion Communication Bus |
| DTC U182D | U182D 00: Lost Communication with Hybrid Powertrain Control Module 2 on Powertrain Expansion Communication Bus |
| DTC U182E or U182F | U182E 00: Drive Motor Control Module 1 Lost Communication with Hybrid Powertrain Control Module 2 on Powertrain Expansion Communication Bus U182F 00: Drive Motor Control Module 2 Lost Communication with Hybrid Powertrain Control Module 2 on Powertrain Expansion Communication Bus |
| DTC U1833 | U1833 00: Lost Communication with Electronic Brake Control Module on Chassis Expansion Communication Bus |
| DTC U1838 | U1838 00: Lost Communication with Battery Charger Control Module on High Voltage Energy Management Communication Bus |
| DTC U1839 | U1839 00: Auxiliary Transmission Fluid Pump Control Module Lost Communication with Engine Control Module |
| DTC U183B | U183B 00: Auxiliary Transmission Fluid Pump Control Module Lost Communication with Transmission Control Module |
| DTC U183C | U183C 00: Auxiliary Transmission Fluid Pump Lost Communication with Hybrid Powertrain Control Module 2 on Powertrain Expansion Communication Bus |
| DTC U183E | U183E 00: Lost Communication with OnStar Module on Low Speed Communication Bus |
| DTC U1845 or U1846 | U1845 00: Drive Motor Control Module 1 Lost Communication with Hybrid Powertrain Control Module U1846 00: Drive Motor Control Module 2 Lost Communication with Hybrid Powertrain Control Module |
| DTC U1849 | U1849 00: Drive Motor Control Module 1 Lost Communication with Transmission Control Module |
| DTC U184A | U184A 00: Lost Communication with Body Control Module on Low Speed Communication Bus |
| DTC U184B | U184B 00: Lost Communication with Electronic Climate Control Module on Low Speed Communication Bus |
| DTC U184C | U184C 00: Lost Communication with Instrument Cluster on Low Speed Communication Bus |
| DTC U184D | U184D 00: Lost Communication with Radio on Low Speed Communication Bus |
| DTC U184E | U184E 00: Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed Communication Bus |
| DTC U184F | U184F 00: Electric A/C Compressor Control Module Lost Communication with Engine Control Module |
| DTC U1850 | U1850 00: Drive Motor Control Module 2 Lost Communication with Transmission Control Module |
| DTC U1858 | U1858 00: Electronic Brake Control Module Lost Communication with Hybrid Powertrain Control Module on Chassis Expansion Communication Bus |
| DTC U185A | U185A 00: Lost Communication with Battery Energy Control Module on High Voltage Energy Management Communication Bus |
| DTC U185B | U185B 00: Battery Energy Control Module Lost Communication with Hybrid Powertrain Control Module 2 on High Voltage Energy Management Communication Bus |
| DTC U185C | U185C 00: Battery Charger Control Module Lost Communication with Hybrid Powertrain Control Module 2 on High Voltage Energy Management Communication Bus |
| DTC U1860 | U1860 00: Electric A/C Compressor Control Module Lost Communication with Hybrid Powertrain Control Module 2 |
| DTC U1861 | U1861 00: Battery Charger Control Module Lost Communication with Engine Control Module |
| DTC U186A | U186A 00: Electronic Brake Control Module Lost Communication with Engine Control Module |
| DTC U186B | U186B 00: Electronic Brake Control Module Lost Communication with Transmission Control Module |
| DTC U1876 | U1876 00: Drive Motor Control Module 1 Lost Communication with Engine Control Module |
| DTC U1885 | U1885 00: Battery Energy Control Module Lost Communication with Hybrid Powertrain Control Module |
| DTC U18B9-U18BF | U18B9: Primary High Speed CAN Bus Subnet Configuration List U18BF: Secondary High Speed CAN Bus Subnet Configuration List |
| DTC U2099 | U2099 00: High Speed Communication Enable Circuit |
| DTC U2101 | U2101: CAN Bus Maximum Configuration List |
| DTC U2103 | U2103 00: Fewer Controllers On Than Programmed |
| DTC U2105-U2199 | Control modules connected to the high and low speed GMLAN serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the control modules. The control modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. Each message contains the identification number of the transmitter module. |
| DTC U2401 | U2401 00: Battery Energy Control Module Dedicated Bus 1 Off |
| DTC U2602 | U2602 00: Battery Energy Control Module Lost Communication with Hybrid Powertrain Control Module 2 |
| DTC U2603 | U2603 00: Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 1 |
| DTC U2604 | U2604 00: Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 2 |
| DTC U2605 | U2605 00: Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 3 |
| DTC U2606 | U2606 00: Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 4 |
| DTC U2608 | U2608 00: Electric A/C Compressor Control Module Lost Communication with Hybrid Powertrain Control Module |
| DTC U2609 | U2609 00: Battery Charger Control Module Lost Communication with Hybrid Powertrain Control Module |
| DTC U2611 | U2611 00: Auxiliary Transmission Fluid Pump Control Module Lost Communication with Hybrid Powertrain Control Module |
| DTC U2612 | U2612 00: Battery Charger Control Module Lost Communication with Hybrid Powertrain Control Module 2 |