Control Module U Code List
| Control Module U Code List |
This list includes all Data Communications related U-code DTCs in alphanumeric order with descriptors for all modules. Not all DTCs listed will be applicable to all vehicles.
| DTC | DTC Descriptor |
|
U0001 00
|
High Speed CAN Bus Malfunction
|
|
U0002 00
|
High Speed CAN Bus
|
|
U0020 00
|
Low Speed CAN Bus
|
|
U0073 00
|
Control Module Communication Bus A Off
|
|
U0073 01
|
Control Module Communication Bus A Off Short to Battery
|
|
U0073 02
|
Control Module Communication Bus A Off Short to Ground
|
|
U0073 04
|
Control Module Communication Bus A Off Open
|
|
U0073 71
|
Control Module Communication Bus A Off Invalid Data
|
|
U0074 00
|
Control Module Communication Bus B Off
|
|
U0077 00
|
Control Module Chassis Expansion Communication Bus Off
|
|
U0078 00
|
Control Module Low Speed Communication Bus Off
|
|
U007A 00
|
Control Module High Voltage Energy Management Communication Bus Off
|
|
U0100 00
|
Lost Communication With Engine Control Module
|
|
U0100 71
|
Lost Communication With Engine Control Module Invalid Data
|
|
U0100 72
|
Lost Communication With Engine Control Module Message Counter Incorrect
|
|
U0100 74
|
Lost Communication With Engine Control Module Bus Signal Checksum Error
|
|
U0101 00
|
Lost Communication With Transmission Control Module
|
|
U0101 71
|
Lost Communication With Transmission Control Module Invalid Data
|
|
U0102 00
|
Lost Communication with Transfer Case Control Module
|
|
U0102 71
|
Lost Communication with Transfer Case Control Module Invalid Data
|
|
U0104 00
|
Lost Communication With Cruise Control Module
|
|
U0104 02
|
Lost Communication With Cruise Control Module Short to Ground
|
|
U0104 71
|
Lost Communication With Cruise Control Module Invalid Data
|
|
U0104 72
|
Lost Communication With Cruise Control Module Message Counter Incorrect
|
|
U0104 74
|
Lost Communication With Cruise Control Module Bus Signal Checksum Error
|
|
U0109 00
|
Lost Communication with Fuel Pump Control Module
|
|
U010F 00
|
Lost Communication with Air Conditioning Control Module
|
|
U0111 00
|
Lost Communication with Battery Energy Control Module
|
|
U0115 00
|
Lost Communication with ECM 2
|
|
U0117 00
|
Lost Communication With Power Take-Off Control Module
|
|
U0121 00
|
Lost Communication With Electronic Brake Control Module
|
|
U0121 03
|
Lost Communication With Electronic Brake Control Module Low Voltage
|
|
U0121 71
|
Lost Communication With Electronic Brake Control Module Invalid Data
|
|
U0121 72
|
Lost Communication With Electronic Brake Control Module Message Counter Incorrect
|
|
U0121 74
|
Lost Communication With Electronic Brake Control Module Bus Signal Checksum Error
|
|
U0122 00
|
Lost Communication With Vehicle Stability Control Module
|
|
U0125 00
|
Lost Communication With Multi-axis Acceleration Sensor Module
|
|
U0125 71
|
Lost Communication With Multi-axis Acceleration Sensor Module Invalid Data
|
|
U0125 72
|
Lost Communication With Multi-axis Acceleration Sensor Module Message Counter Incorrect
|
|
U0125 74
|
Lost Communication With Multi-axis Acceleration Sensor Module Bus Signal Checksum Error
|
|
U0126 00
|
Lost Communication With Steering Wheel Angle Sensor Module
|
|
U0126 71
|
Lost Communication With Steering Wheel Angle Sensor Module Invalid Data
|
|
U0126 72
|
Lost Communication With Steering Wheel Angle Sensor Module Message Counter Incorrect
|
|
U0126 74
|
Lost Communication With Steering Wheel Angle Sensor Module Bus Signal Checksum Error
|
|
U0126 5A
|
Lost Communication With Steering Wheel Angle Sensor Module Not Plausible
|
|
U0128 00
|
Lost Communication With Park Brake Control Module
|
|
U0128 71
|
Lost Communication With Park Brake Control Module Invalid Data
|
|
U0128 72
|
Lost Communication With Park Brake Control Module Message Counter Incorrect
|
|
U0128 74
|
Lost Communication With Park Brake Control Module Bus Signal Checksum Error
|
|
U0129 00
|
Lost Communication with Brake System Control Module
|
|
U0130 00
|
Lost Communication With Electric Power Steering Control Module
|
|
U0130 71
|
Lost Communication With Electric Power Steering Control Module Invalid Data
|
|
U0130 72
|
Lost Communication With Electric Power Steering Control Module Message Counter Incorrect
|
|
U0130 74
|
Lost Communication With Electric Power Steering Control Module Bus Signal Checksum Error
|
|
U0131 00
|
Lost Communication With Power Steering Control Module
|
|
U0131 71
|
Lost Communication With Power Steering Control Module Invalid Data
|
|
U0132 00
|
Lost Communication With Suspension Control Module
|
|
U0133 00
|
Lost Communication With Air Suspension Control Module
|
|
U0133 71
|
Lost Communication With Air Suspension Control Module Invalid Data
|
|
U0136 00
|
Lost Communication With Differential Control Module - Rear
|
|
U0136 71
|
Lost Communication With Differential Control Module - Rear Invalid Data
|
|
U0139 00
|
Lost Communication With Suspension Control Module
|
|
U0139 71
|
Lost Communication With Suspension Control Module Invalid Data
|
|
U0140 00
|
Lost Communication With Body Control Module
|
|
U0140 71
|
Lost Communication With Body Control Module Invalid Data
|
|
U0140 72
|
Lost Communication With Body Control Module Message Counter Incorrect
|
|
U0140 74
|
Lost Communication With Body Control Module Bus Signal Checksum Error
|
|
U0146 00
|
Lost Communication with Gateway
|
|
U0151 00
|
Lost Communication With Inflatable Restraint Sensing and Diagnostic Module
|
|
U0155 00
|
Lost Communication With Instrument Cluster
|
|
U0158 00
|
Lost Communication With Head-Up Display
|
|
U0159 00
|
Lost Communication With Parking Assist Control Module
|
|
U0160 00
|
Lost Communication With Chime Alarm Control Module
|
|
U0164 00
|
Lost Communication with HVAC Control Module
|
|
U0166 00
|
Lost Communication with Auxiliary Heater Control Module
|
|
U0167 00
|
Lost Communication with Immobilizer Control Module
|
|
U0168 00
|
Lost Communication With Keyless Entry Control Module
|
|
U016B 00
|
Lost Communication with Electric A/C Compressor Control Module
|
|
U0170 00
|
Lost Communication With Passenger Presence Detection Sensor Module
|
|
U0181 00
|
Lost Communication With Headlamp Leveling Control Module
|
|
U0182 00
|
Lost Communication With Lighting Control Module - Front
|
|
U0184 00
|
Lost Communication With Radio
|
|
U0186 00
|
Lost Communication With Speaker Amplifier Module
|
|
U0196 00
|
Lost Communication With Rear Audio Control Module
|
|
U0191 00
|
Lost Communication With Television
|
|
U0193 00
|
Lost Communication With Digital Radio Receiver Control Module
|
|
U0197 00
|
Lost Communication With Telephone Control Module
|
|
U0198 00
|
Lost Communication With Telematic Control Module
|
|
U0201 00
|
Lost Communication With Transfer Case Control Module
|
|
U0203 00
|
Lost Communication With Left Rear Door Switch Panel Control Module
|
|
U0204 00
|
Lost Communication With Right Rear Door Switch Panel Control Module
|
|
U0207 00
|
Lost Communication With Moveable Roof Control Module
|
|
U0208 00
|
Lost Communication With Memory Seat Control Module
|
|
U0209 00
|
Lost Communication With Front Seat Heating Control Module
|
|
U0210 00
|
Lost Communication With Rear Seat Heating Control Module
|
|
U0230 00
|
Lost Communication With Liftgate Control Module
|
|
U0232 00
|
Lost Communication With Side-Object Detection Control Module - Left
|
|
U0233 00
|
Lost Communication With Side-Object Detection Control Module - Right
|
|
U0236 00
|
Lost Communication With Steering Column Lock Module
|
|
U0237 00
|
Lost Communication With Multimedia Player Interface Module
|
|
U023A 00
|
Lost Communication With Vehicle Direction Camera Control Module
|
|
U0249 00
|
Lost Communication With Rear Radio Audio Control Module
|
|
U0252 00
|
Lost Communication With Trailer Interface Control Module
|
|
U0254 00
|
Lost Communication With Remote Start Module
|
|
U0255 00
|
Lost Communication With Info Display Module
|
|
U0256 00
|
Lost Communication With Infotainment Faceplate Control Module
|
|
U0257 00
|
Lost Communication With Info Display Module/Infotainment Faceplate Control Module
|
|
U0264 00
|
Lost Communication With Camera Module - Rear
|
|
U0284 00
|
Lost Communication with Active Grille Air Shutter Module A
|
|
U0293 00
|
Lost Communication with Hybrid Powertrain Control Module
|
|
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
|
|
U0401 00
|
Invalid Data Received from ECM
|
|
U0401 72
|
Invalid Data Received from ECM Message Counter Incorrect
|
|
U0401 74
|
Invalid Data Received from ECM Bus Signal Checksum Error
|
|
U0402 72
|
Invalid Data Received From Transmission Control Module Message Counter Incorrect
|
|
U0402 73
|
Invalid Data Received From Transmission Control Module Parity Error
|
|
U0402 74
|
Invalid Data Received From Transmission Control Module Bus Signal Checksum Error
|
|
U0405 00
|
Invalid Data Received From Cruise Control Module
|
|
U0405 71
|
Invalid Data Received From Cruise Control Module Invalid Data
|
|
U0405 72
|
Invalid Data Received From Cruise Control Module Message Counter Incorrect
|
|
U0405 74
|
Invalid Data Received From Cruise Control Module Bus Signal Checksum Error
|
|
U0415 00
|
Invalid Data Received From Electronic Brake Control Module
|
|
U0415 72
|
Invalid Data Received From Electronic Brake Control Module Message Counter Incorrect
|
|
U0415 74
|
Invalid Data Received From Electronic Brake Control Module Bus Signal Checksum Error
|
|
U0416 00
|
Invalid Data Received From Vehicle Dynamics Control Module
|
|
U0416 72
|
Invalid Data Received From Vehicle Dynamics Control Module Message Counter Incorrect
|
|
U0416 74
|
Invalid Data Received From Vehicle Dynamics Control Module Bus Signal Checksum Error
|
|
U0418 00
|
Invalid Data Received From Brake System Control Module
|
|
U0418 71
|
Invalid Data Received From Brake System Control Module Invalid Data
|
|
U0418 72
|
Invalid Data Received From Brake System Control Module Message Counter Incorrect
|
|
U0418 74
|
Invalid Data Received From Brake System Control Module Bus Signal Checksum Error
|
|
U0422 00
|
Invalid Data Received From Body Control Module
|
|
U0422 70
|
Invalid Data Received From Body Control Module
|
|
U0422 72
|
Invalid Data Received From Body Control Module Message Counter Incorrect
|
|
U0422 74
|
Invalid Data Received From Body Control Module Bus Signal Checksum Error
|
|
U0424 00
|
Invalid Data Received From HVAC Control Module
|
|
U0432 00
|
Invalid Data Received From Multi-axis Acceleration Sensor Module
|
|
U0432 72
|
Invalid Data Received From Multi-axis Acceleration Sensor Module Message Counter Incorrect
|
|
U0432 74
|
Invalid Data Received From Multi-axis Acceleration Sensor Module Bus Signal Checksum Error
|
|
U0438 71
|
Invalid Data Received From Trailer Brake Control Module
|
|
U0465 00
|
Invalid Data Received From Power Take-Off Control Module
|
|
U1501 00
|
LIN Bus 1
|
|
U1502 00
|
LIN Bus 2
|
|
U1510 00
|
(K9 BCM) LIN Bus 1 Lost Communication With Device 0 (K38 Intrusion Sensor Module)
|
|
U1510 00
|
(K33 HVAC Control Module) LIN Bus 1 Lost Communication With Device 0 (A26 HVAC Control)
|
|
U1510 00
|
(A11 Radio) LIN Bus 1 Lost Communication with Device 0 (A20 Radio/HVAC Control)
|
|
U1511 00
|
(K26 Headlamp Control Module) LIN Bus 1 Lost Communication With Device 1 (E13L Headlamp Assembly-Left)
|
|
U1512 00
|
(K26 Headlamp Control Module) LIN Bus 1 Lost Communication With Device 2 (E13R Headlamp Assembly-Right)
|
|
U1513 00
|
(K26 Headlamp Control Module) LIN Bus 1 Lost Communication With Device 3 (E13L Headlamp Assembly-Left)
|
|
U1514 00
|
(K26 Headlamp Control Module) LIN Bus 1 Lost Communication With Device 4 (E13R Headlamp Assembly-Right)
|
|
U1515 00
|
(K9 BCM) LIN Bus 1 Lost Communication With Device 5 (B117 Windshield Outside Moisture Sensor)
|
|
U1517 00
|
(K9 BCM) LIN Bus 1 Lost Communication With Device 7 (Sunroof Sunshade Module)
|
|
U1519 00
|
(K40 MSM) LIN Bus 1 Lost Communication With Device 9 (S52 Outside Rearview Mirror Switch)
|
|
U1519 00
|
(K40 MSM) LIN Bus 1 Lost Communication With Device 9 (K96 Mirror Control Module)
|
|
U151A 00
|
(K9 BCM) LIN Bus 1 Lost Communication With Device 10 (B117 Windshield Outside Moisture Sensor)
|
|
U151B 00
|
(K9 BCM) LIN Bus 1 Lost Communication With Device 11 (K61 Sunroof Control Module)
|
|
U151B 00
|
(K40 MSM) LIN Bus 1 Lost Communication With Device 11 (S79P Window Switch - Passenger)
|
|
U1520 00
|
(K9 BCM) LIN Bus 2 Lost Communication With Device 0 (P25 Power Sounder Content Theft Deterrent Alarm Module)
|
|
U1521 00
|
(K26 Headlamp Control Module) LIN Bus 2 Lost Communication With Device 1 (E13L Headlamp Assembly-Left)
|
|
U1522 00
|
(K9 BCM) LIN Bus 2 Lost Communication With Device 2 (K65 Tire Pressure Indicator Module)
|
|
U1522 00
|
(K26 Headlamp Control Module) LIN Bus 2 Lost Communication With Device 2 (E13R Headlamp Assembly-Right)
|
|
U1523 00
|
(K26 Headlamp Control Module) LIN Bus 2 Lost Communication With Device 3 (E13L Headlamp Assembly-Left)
|
|
U1524 00
|
(K26 Headlamp Control Module) LIN Bus 2 Lost Communication With Device 4 (E13R Headlamp Assembly-Right)
|
|
U152C 00
|
(K9 BCM) LIN Bus 2 Lost Communication With Device 12 (K18 Electronic Compass Module)
|
|
U152D 00
|
(K9 BCM) LIN Bus 2 Lost Communication With Device 13 (S3 Automatic Gearbox Change Lever)
|
|
U1530 00
|
(K9 BCM) LIN Bus 3 Lost Communication With Device 0 (M74P Window Motor - Passenger)
|
|
U1534 00
|
(K9 BCM) LIN Bus 3 Lost Communication With Device 4 (M74D Window Motor - Driver)
|
|
U1538 00
|
(K9 BCM) LIN Bus 3 Lost Communication With Device 8 (S79D Window Switch - Driver)
|
|
U153A 00
|
(K9 BCM) LIN Bus 3 Lost Communication With Device 10 (S79P Window Switch - Passenger)
|
|
U1540 00
|
(K9 BCM) LIN Bus 4 Lost Communication With Device 0 (M74RR Window Motor - Right Rear)
|
|
U1544 00
|
(K9 BCM) LIN Bus 4 Lost Communication With Device 4 (M74LR Window Motor - Left Rear)
|
|
U1548 00
|
(K9 BCM) LIN Bus 4 Lost Communication With Device 8 (S79LR Window Switch - Left Rear)
|
|
U154A 00
|
(K9 BCM) LIN Bus 4 Lost Communication With Device 10 (S79RR Window Switch - Right Rear)
|
|
U154B 00
|
(K9 BCM) LIN Bus 4 Lost Communication With Device 11 (K49 Rear Seat Control Module)
|
|
U1793 00
|
14V Power Module Lost Communication with Hybrid Powertrain Control Module on Powertrain Expansion Communication Bus
|
|
U1795 00
|
14V Power Module Powertrain Expansion Communication Bus Off
|
|
U1803 00
|
Lost Communication with Hybrid Powertrain Control Module 2
|
|
U1806 00
|
Battery Energy Control Module High Voltage Energy Management Communication Bus Off
|
|
U1807 00
|
Battery Charger Control Module High Voltage Energy Management Communication Bus Off
|
|
U180A 00
|
Electric A/C Compressor Control Module High Speed Communication Bus Off
|
|
U180B 00
|
Battery Energy Control Module High Speed Communication Bus Off
|
|
U180C 00
|
Battery Charger Control Module High Speed Communication Bus Off
|
|
U180D 00
|
Electronic Brake Control Module Chassis Expansion Communication Bus Off
|
|
U1814 01
|
Powertrain Wake Up Communication Circuit Short to Battery
|
|
U1814 02
|
Powertrain Wake Up Communication Circuit Short to Ground
|
|
U1814 04
|
Powertrain Wake Up Communication Circuit Open
|
|
U1815 00
|
Lost Communication with Drive Motor Control Module A on Powertrain Expansion Communication Bus
|
|
U1816 00
|
Lost Communication with Drive Motor Control Module B on Powertrain Expansion Communication Bus
|
|
U1817 00
|
Lost Communication with Hybrid Powertrain Control Module on Powertrain Expansion Communication Bus
|
|
U1818 00
|
Lost Communication with Engine Control Module on Powertrain Expansion Communication Bus
|
|
U1821 00
|
Lost Communication with 14V Power Module on Powertrain Expansion Communication Bus
|
|
U1826 00
|
Lost Communication With Multi-Axis Acceleration Sensor Module on Bus B (Chassis Expansion Bus)
|
|
U1827 00
|
Lost Communication With Steering Angle Sensor Module on Bus B (Chassis Expansion Bus)
|
|
U182D 00
|
Lost Communication with Hybrid Powertrain Control Module 2 on Powertrain Expansion Communication Bus
|
|
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
|
|
U1833 00
|
Lost Communication with Electronic Brake Control Module on Chassis Expansion Communication Bus
|
|
U1838 00
|
Lost Communication with Battery Charger Control Module on High Voltage Energy Management Communication Bus
|
|
U1839 00
|
Auxiliary Transmission Fluid Pump Control Module Lost Communication with Engine Control Module
|
|
U183A 00
|
Lost Communication with OnStar Module
|
|
U183B 00
|
Auxiliary Transmission Fluid Pump Control Module Lost Communication with Transmission Control Module
|
|
U183C 00
|
Auxiliary Transmission Fluid Pump Control Module Lost Communication with Hybrid Powertrain Control Module 2 on Powertrain Expansion Communication Bus
|
|
U183E 00
|
Lost Communication with OnStar Module on Low Speed Communication Bus
|
|
U1849 00
|
Drive Motor Control Module 1 Lost Communication with Transmission Control Module
|
|
U184B 00
|
Lost Communication with Electronic Climate Control Module on Low Speed Communication Bus
|
|
U184C 00
|
Lost Communication with Instrument Cluster on Low Speed Communication Bus
|
|
U184D 00
|
Lost Communication with Radio on Low Speed Communication Bus
|
|
U184E 00
|
Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed Communication Bus
|
|
U184F 00
|
Electric A/C Compressor Control Module Lost Communication with Engine Control Module
|
|
U1850 00
|
Drive Motor Control Module 2 Lost Communication with Transmission Control Module
|
|
U1858 00
|
Electronic Brake Control Module Lost Communication with Hybrid Powertrain Control Module on Chassis Expansion Communication Bus
|
|
U185A 00
|
Lost Communication with Battery Energy Control Module on High Voltage Energy Management Communication Bus
|
|
U185B 00
|
Battery Energy Control Module Lost Communication with Hybrid Powertrain Control Module 2 on High Voltage Energy Management Communication Bus
|
|
U185C 00
|
Battery Charger Control Module Lost Communication with Hybrid Powertrain Control Module 2 on High Voltage Energy Management Communication Bus
|
|
U1860 00
|
Electric A/C Compressor Control Module Lost Communication with Hybrid Powertrain Control Module 2
|
|
U1861 00
|
Battery Charger Control Module Lost Communication with Engine Control Module
|
|
U186A 00
|
Electronic Brake Control Module Lost Communication with Engine Control Module
|
|
U186A 00
|
Electronic Brake Control Module Lost Communication with Transmission Control Module
|
|
U1876 00
|
Drive Motor Control Module 1 Lost Communication with Engine Control Module
|
|
U1885 00
|
Battery Energy Control Module Lost Communication with Hybrid Powertrain Control Module
|
|
U1888 00
|
Hybrid Powertrain Control Module Lost Communication with Battery Energy Control Module
|
|
U18B9 00
|
Primary High Speed CAN Bus Subnet Configuration List
|
|
U18BF 00
|
Secondary High Speed CAN Bus Subnet Configuration List
|
|
U1900 00
|
Lost Communication With Speech to Text Interface Module
|
|
U1901 00
|
Lost Communication With Front Controls Multifunction Interface Module
|
|
U2099 00
|
High Speed Communication Enable Circuit
|
|
U2099 01
|
High Speed Communication Enable Circuit Short to Battery
|
|
U2099 02
|
High Speed Communication Enable Circuit Short to Ground
|
|
U2099 04
|
High Speed Communication Enable Circuit Open
|
|
U2099 5A
|
High Speed Communication Enable Circuit Not Plausible
|
|
U2100 00
|
CAN Bus Communication
|
|
U2101 00
|
CAN Bus Maximum Configuration List
|
|
U2103 00
|
Fewer Controllers On Bus Than Programmed
|
|
U2105 00
|
Lost Communication with Engine Control Module
|
|
U2106 00
|
Lost Communication with Transmission Control Module
|
|
U2107 00
|
Lost Communication with Body Control Module
|
|
U2108 00
|
Lost Communication with Electronic Brake Control Module
|
|
U2127 00
|
Lost Communication with Front HVAC Control Module
|
|
U2139 00
|
Lost Communication with Column Integrated Module
|
|
U2144 00
|
Lost Communication with Distance Sensing Cruise Control Module
|
|
U2176 00
|
Lost Communication with Power Take-Off Control Module
|
|
U2178 00
|
Lost Communication With Trailer Interface Control Module
|
|
U2401 00
|
Battery Energy Control Module Dedicated Bus 1 Off
|
|
U2602 00
|
Battery Energy Control Module Lost Communication with Hybrid Powertrain Control Module 2
|
|
U2603 00
|
Battery Energy Control Module Lost Communication with Hybrid Battery Interface Control Module 1
|
|
U2604 00
|
Battery Energy Control Module Lost Communication with Hybrid Battery Interface Control Module 2
|
|
U2605 00
|
Battery Energy Control Module Lost Communication with Hybrid Battery Interface Control Module 3
|
|
U2606 00
|
Battery Energy Control Module Lost Communication with Hybrid Battery Interface Control Module 4
|
|
U2609 00
|
Battery Energy Control Module Lost Communication with Hybrid Powertrain Control Module
|
|
U2612 00
|
Battery Charger Control Module Lost Communication with Hybrid Powertrain Control Module 2
|
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