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Control Module U Code List

This list includes all Data Communications related U-code DTCs in alphanumeric order with descriptors for all devices. Not all DTCs listed will be applicable to all vehicles.

For symptom byte information, refer to Symptom Byte List .

Control Module U Code List

DTC DTC Descriptor
U0001 High Speed CAN Bus Malfunction
U0002 High Speed CAN Bus
U0020 Low Speed CAN Bus
U0028 MOST Bus
U0029 MOST Bus Performance
U0073 Control Module Communication Bus A Off
U0074 Control Module Communication Bus B Off
U0075 Control Module Communication Object Detection CAN Bus Off
U0077 Control Module Communication Chassis Expansion CAN Bus Off
U0078 Control Module Communication Low Speed CAN Bus Off
U007A Control Module Communication High Voltage Energy Management CAN Bus Off
U0100 Lost Communication With Engine Control Module
U0101 Lost Communication With Transmission Control Module
U0102 Lost Communication with Transfer Case Control Module
U0103 Lost Communication with Shift Lever Module
U0104 Lost Communication With Cruise Control Module
U0105 Lost Communication with Fuel Injector Control Module
U0109 Lost Communication with Fuel Pump Control Module
U010E Lost Communication with Reductant Sensor Module
U010F Lost Communication with Air Conditioning Control Module
U0111 Lost Communication with Battery Energy Control Module
U0112 Lost Communication with Battery Energy Control Module
U0115 Lost Communication with Engine Control Module B
U0117 Lost Communication With Power Take-Off Control Module
U0121 Lost Communication With Electronic Brake Control Module
U0122 Lost Communication With Vehicle Stability Control Module
U0125 Lost Communication With Multi-axis Acceleration Sensor Module
U0126 Lost Communication With Steering Wheel Angle Sensor Module
U0128 Lost Communication With Park Brake Control Module
U0129 Lost Communication with Brake System Control Module
U012A Lost Communication With Chassis Control Module
U0130 Lost Communication With Electric Power Steering Control Module
U0131 Lost Communication With Power Steering Control Module
U0132 Lost Communication With Suspension Control Module
U0133 Lost Communication With Air Suspension Control Module
U0136 Lost Communication With Differential Control Module - Rear
U0137 Lost Communication with Trailer Brake Control Module
U0139 Lost Communication With Suspension Control Module
U0140 Lost Communication With Body Control Module
U0146 Lost Communication with Infotainment Gateway Module
U0151 Lost Communication With Inflatable Restraint Sensing and Diagnostic Module
U0155 Lost Communication With Instrument Cluster
U0158 Lost Communication With Head-Up Display
U0159 Lost Communication With Parking Assist Control Module
U0160 Lost Communication With Chime Alarm Control Module
U0164 Lost Communication with HVAC Control Module
U0166 Lost Communication with Auxiliary Heater Control Module
U0167 Lost Communication with Immobilizer Control Module
U0168 Lost Communication With Keyless Entry Control Module
U016B Lost Communication with Electric A/C Compressor Control Module
U0170 Lost Communication with Passenger Presence Detection Sensor Module
U0181 Lost Communication With Headlamp Leveling Control Module
U0182 Lost Communication With Lighting Control Module - Front
U0184 Lost Communication With Radio
U0186 Lost Communication With Speaker Amplifier Module
U0196 Lost Communication With Rear Audio Control Module
U0191 Lost Communication With Television
U0193 Lost Communication With Digital Radio Receiver Control Module
U0197 Lost Communication With Telephone Control Module
U0198 Lost Communication With Telematic Control Module
U0201 Lost Communication With Transfer Case Control Module
U0203 Lost Communication With Left Rear Door Switch Panel Control Module
U0204 Lost Communication With Right Rear Door Switch Panel Control Module
U0207 Lost Communication With Moveable Roof Control Module
U0208 Lost Communication with Seat Memory Control Module
U0209 Lost Communication With Front Seat Heating Control Module
U0210 Lost Communication With Rear Seat Heating Control Module
U0230 Lost Communication With Liftgate Control Module
U0232 Lost Communication with Side Object Detection Control Module - Left
U0233 Lost Communication with Side Object Detection Control Module - Right
U0236 Lost Communication With Steering Column Lock Module
U0237 Lost Communication With Multimedia Player Interface Module
U023A Lost Communication With Vehicle Direction Camera Control Module (without UGN) 
Lost Communication With Active Safety Control Module (with UGN) 
U0248 Lost Communication with Remote Accessory Module
U0249 Lost Communication with Entertainment Control Module - Rear
U0250 Lost Communication with Impact Classification System Module
U0252 Lost Communication With Trailer Interface Control Module
U0254 Lost Communication With Remote Start Module
U0255 Lost Communication With Info Display Module
U0256 Lost Communication With Infotainment Faceplate Control Module
U0257 Lost Communication With Info Display Module/Infotainment Faceplate Control Module
U0264 Lost Communication With Camera Module - Rear
U0265 Lost Communication with Left Front Short Range Radar Sensor Module
U0268 Lost Communication with Right Front Short Range Radar Sensor Module
U0269 Lost Communication with Front Long Range Object Sensor
U026A Lost Communication with Frontview Camera Module
U026B Lost Communication with Rear Short Range Object Sensor
U0293 Lost Communication with Hybrid/EV Powertrain Control Module
U029D Lost Communication with NOx Sensor 1 Module
U029E Lost Communication with NOx Sensor 2 Module
U0301 Software Incompatibility with Engine Control Module
U0302 Software Incompatibility with Transmission Control Module
U0305 Software Incompatibility With Cruise Control Module
U0315 Software Incompatibility with Electronic Brake Control Module
U0401 Invalid Data Received From Engine Control Module
U0402 Invalid Data Received From Transmission Control Module
U0403 Invalid Data Received From Transfer Case Control Module
U0405 Invalid Data Received From Cruise Control Module
U0415 Invalid Data Received From Electronic Brake Control Module
U0416 Invalid Data Received From Vehicle Dynamics Control Module
U0417 Invalid Data Received From Park Brake Control Module
U0418 Invalid Data Received From Brake System Control Module
U0420 Invalid Data Received From Power Steering Control Module
U0421 Invalid Data Received From Suspension Control Module
U0422 Invalid Data Received From Body Control Module
U0423 Invalid Data Received From Instrument Cluster
U0424 Invalid Data Received From HVAC Control Module
U0428 Invalid Data Received From Steering Wheel Angle Sensor Module
U0431 Invalid Data Received From Body Control Module "A"
U0432 Invalid Data Received From Multi-axis Acceleration Sensor Module
U0437 Invalid Data Received From Differential Control Module - Rear
U0438 Invalid Data Received From Trailer Brake Control Module
U0452 Invalid Data Received From Inflatable Restraint Sensing and Diagnostic Module
U0465 Invalid Data Received From Power Take-Off Control Module
U0499 Invalid Data Received From Telematic Control Module
U053B Invalid Data Received From Active Safety Control Module
U056B Invalid Data Received From Camera Module - Front
U0594 Invalid Data Received From Hybrid/EV Powertrain Control Module
U1501 LIN Bus 1
U1502 LIN Bus 2
U1505 LIN Bus 5
U150E LIN Bus 14
U150F LIN Bus 15
U1510 (K9 Body Control Module) LIN Bus 1 Lost Communication With Device 0 (B67 Ultrasonic Intrusion Sensor)
(K33 HVAC Control Module) LIN Bus 1 Lost Communication With Device 0 (A26 HVAC Controls)
(A11 Radio) LIN Bus 1 Lost Communication with Device 0 (A20 Radio/HVAC Control)
(P16 Instrument Cluster) LIN Bus 1 Lost Communication with Device 0 (S70R Steering Wheel Controls Switch - Right)
U1511 (K26 Headlamp Control Module / K28 Headlamp Leveling Control Module) LIN Bus 1 Lost Communication With Device 1 (E13L Headlamp - Left)
(K40 Seat Memory Control Module) LIN Bus 1 Lost Communication With Device 1 (K99 Steering Column Position Control Module)
U1512 (K26 Headlamp Control Module / K28 Headlamp Leveling Control Module) LIN Bus 1 Lost Communication With Device 2 (E13R Headlamp - Right)
U1513 (K26 Headlamp Control Module / K28 Headlamp Leveling Control Module) LIN Bus 1 Lost Communication With Device 3 (E13L Headlamp - Left)
U1514 (K26 Headlamp Control Module / K28 Headlamp Leveling Control Module) LIN Bus 1 Lost Communication With Device 4 (E13R Headlamp - Right)
U1515 (K9 Body Control Module) LIN Bus 1 Lost Communication With Device 5 (M75 Windshield Wiper Motor)
U1516 (K9 Body Control Module) LIN Bus 1 Lost Communication With Device 6 (B110 Battery Sensor Module)
U1517 (K9 Body Control Module) LIN Bus 1 Lost Communication With Device 7 (K62 Sunroof Sunshade Motor Module)
U1518 (P16 Instrument Cluster) LIN Bus 1 Lost Communication with Device 8 (P29 Head-Up Display)
U1519 (K40 Seat Memory Control Module) LIN Bus 1 Lost Communication With Device 9 (S52 Outside Rearview Mirror Switch)
(K40 Seat Memory Control Module) LIN Bus 1 Lost Communication With Device 9 (K96 Mirror Control Module / K96L Mirror Control Module - Left)
U151A (K9 Body Control Module) LIN Bus 1 Lost Communication With Device 10 (B117 Rain Sensor)
U151B (K9 Body Control Module) LIN Bus 1 Lost Communication With Device 11 (K61 Sunroof Control Module)
(K40 Seat Memory Control Module) LIN Bus 1 Lost Communication With Device 11 (S79P Window Switch - Passenger)
U151C (K33 HVAC Control Module) LIN Bus 1 Lost Communication With Device 0 (K33A HVAC Control Module - Auxiliary)
U1520 (K9 Body Control Module) LIN Bus 2 Lost Communication With Device 0 (P25 Power Sounder Content Theft Deterrent Alarm Module)
U1521 (K26 Headlamp Control Module / K28 Headlamp Leveling Control Module) LIN Bus 2 Lost Communication With Device 1 (E13L Headlamp - Left)
U1522 (K9 Body Control Module) LIN Bus 2 Lost Communication With Device 2 (K65 Tire Pressure Indicator Module)
(K26 Headlamp Control Module / K28 Headlamp Leveling Control Module) LIN Bus 2 Lost Communication With Device 2 (E13R Headlamp - Right)
U1523 (K26 Headlamp Control Module / K28 Headlamp Leveling Control Module) LIN Bus 2 Lost Communication With Device 3 (E13L Headlamp - Left)
U1524 (K9 Body Control Module) LIN Bus 2 Lost Communication With Device 4 (K29F Seat Heating Control Module - Front)
(K26 Headlamp Control Module / K28 Headlamp Leveling Control Module) LIN Bus 2 Lost Communication With Device 4 (E13R Headlamp - Right)
U1526 (K9 Body Control Module) LIN Bus 2 Lost Communication With Device 6 (K29R Seat Heating Control Module - Rear)
U152C (K9 Body Control Module) LIN Bus 2 Lost Communication With Device 12 (K18 Compass Module)
U152D (K9 Body Control Module) LIN Bus 2 Lost Communication With Device 13 (P2 Transmission Shift Lever Position Indicator)
U1530 (K9 Body Control Module) LIN Bus 3 Lost Communication With Device 0 (M74P Window Motor - Passenger)
U1531 (K26 Headlamp Control Module / K28 Headlamp Leveling Control Module) LIN Bus 3 Lost Communication with Device 1 (E13LA Headlamp Assembly - Left)
U1532 (K26 Headlamp Control Module / K28 Headlamp Leveling Control Module) LIN Bus 3 Lost Communication with Device 2 (E13RA Headlamp Assembly - Right)
U1534 (K9 Body Control Module) LIN Bus 3 Lost Communication With Device 4 (M74D Window Motor - Driver)
U1538 (K9 Body Control Module) LIN Bus 3 Lost Communication With Device 8 (S79D Window Switch - Driver)
U153A (K9 Body Control Module) LIN Bus 3 Lost Communication With Device 10 (S79P Window Switch - Passenger)
U1540 (K9 Body Control Module) LIN Bus 4 Lost Communication With Device 0 (M74RR Window Motor - Right Rear)
U1544 (K9 Body Control Module) LIN Bus 4 Lost Communication With Device 4 (M74LR Window Motor - Left Rear)
U1548 (K9 Body Control Module) LIN Bus 4 Lost Communication With Device 8 (S79LR Window Switch - Left Rear)
U154A (K9 Body Control Module) LIN Bus 4 Lost Communication With Device 10 (S79RR Window Switch - Right Rear)
U154B (K9 Body Control Module) LIN Bus 4 Lost Communication With Device 11 (K49 Rear Seat Control Module)
U1556 (K38 Chassis Control Module) LIN Bus 5 Lost Communication with Device 6 (K133 Trailer Brake Power Control Module)
U15E1 (A11 Radio) LIN Bus 14 Lost Communication with Device 1 (A26 HVAC Controls)
U15E3 (A11 Radio) LIN Bus 14 Lost Communication with Device 3
U15F0 (K74 Human Interface Control Module) LIN Bus 15 Lost Communication with Device 0 (P17 Info Display Module)
U1793 14V Power Module Lost Communication with Hybrid/EV Powertrain Control Module on Powertrain Expansion Communication Bus
U1795 14V Power Module Powertrain Expansion Communication Bus Off
U179A Lost Communication with Hybrid/EV Powertrain Control Module 2
U1803 Lost Communication with Hybrid/EV Powertrain Control Module 2
U1804 Lost Communication with Inside Rearview Mirror Control Module
U1806 Battery Energy Control Module High Voltage Energy Management CAN Bus Off
U1807 Battery Charger Control Module High Voltage Energy Management CAN Bus Off
U180A Electric A/C Compressor Control Module High Speed CAN Bus Off
U180B Battery Energy Control Module High Speed CAN Bus Off
U180C Battery Charger Control Module High Speed CAN Bus Off
U180D Electronic Brake Control Module Chassis Expansion CAN Bus Off
U1811 Battery Energy Control Module Powertrain Expansion CAN Bus Off
U1814 Powertrain Wake-Up Communication Circuit
U1815 Lost Communication with Drive Motor Control Module 1 on Bus B
U1816 Lost Communication with Drive Motor Control Module B on Bus B
U1817 Lost Communication with Hybrid/EV Powertrain Control Module on Powertrain Expansion CAN Bus
U1818 Lost Communication with Engine Control Module on Powertrain Expansion Communication Bus
U1821 Lost Communication with 14V Power Module on Powertrain Expansion Communication Bus
U1826 Lost Communication with Multi-Axis Acceleration Sensor Module on Powertrain Expansion CAN Bus
U1827 Lost Communication with Steering Angle Sensor Module on Powertrain Expansion CAN Bus
U182A Hybrid/EV Powertrain Control Module Lost Communication with Battery Energy Control Module on Powertrain Expansion CAN Bus
U182D Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus
U182E Drive Motor Control Module 1 Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus
U182F Drive Motor Control Module 2 Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus
U1831 Drive Motor Control Module 1 Lost Communication with Hybrid/EV Powertrain Control Module on Powertrain Expansion CAN Bus
U1833 Lost Communication with Electronic Brake Control Module on Chassis Expansion CAN Bus
U1838 Lost Communication with Battery Charger Control Module on High Voltage Energy Management CAN Bus
U1839 Auxiliary Transmission Fluid Pump Control Module Lost Communication with Engine Control Module
U183A Lost Communication with Telematics Communication Interface Control Module on High Speed CAN Bus
U183B Auxiliary Transmission Fluid Pump Control Module Lost Communication with Transmission Control Module
U183C Auxiliary Transmission Fluid Pump Control Module Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus
U183E Lost Communication with Telematics Communication Interface Control Module on Low Speed CAN Bus
U1844 Battery Energy Control Module Lost Communication with Hybrid/EV Powertrain Control Module on Bus B
U1845 Drive Motor Control Module 1 Lost Communication with Hybrid/EV Powertrain Control Module
U1846 Drive Motor Control Module 2 Lost Communication with Hybrid/EV Powertrain Control Module
U1847 Drive Motor Control Module 1 Lost Communication with Battery Energy Control Module on Powertrain Expansion CAN Bus
U1849 Drive Motor Control Module 1 Lost Communication with Transmission Control Module
U184A Lost Communication with Body Control Module on Low Speed CAN Bus
U184B Lost Communication with Remote Heater and Air Conditioning Control Module on Low Speed CAN Bus
U184C Lost Communication with Instrument Cluster on Low Speed CAN Bus
U184D Lost Communication with Radio on Low Speed CAN Bus
U184E Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus
U184F Electric A/C Compressor Control Module Lost Communication with Engine Control Module
U1850 Drive Motor Control Module 2 Lost Communication with Transmission Control Module
U1858 Electronic Brake Control Module Lost Communication with Hybrid/EV Powertrain Control Module on Chassis Expansion CAN Bus
U185A Lost Communication with Battery Energy Control Module on High Voltage Energy Management CAN Bus
U185B Battery Energy Control Module Lost Communication with Hybrid/EV Powertrain Control Module 2 on High Voltage Energy Management CAN Bus
U185C Battery Charger Control Module Lost Communication with Hybrid/EV Powertrain Control Module 2 on High Voltage Energy Management CAN Bus
U185D Fuel Injector Control Module Lost Communication with Engine Control Module
U185E Fuel Injector Control Module Lost Communication with Body Control Module
U1860 Electric A/C Compressor Control Module Lost Communication with Hybrid/EV Powertrain Control Module 2
U1861 Battery Charger Control Module Lost Communication with Engine Control Module
U186A Electronic Brake Control Module Lost Communication with Engine Control Module
U186B Electronic Brake Control Module Lost Communication with Transmission Control Module
U1875 Drive Motor Control Module 1 Lost Communication with Battery Energy Control Module
U1876 Drive Motor Control Module 1 Lost Communication with Engine Control Module
U1879 Drive Motor Control Module 2 Lost Communication with Engine Control Module
U1885 Battery Energy Control Module Lost Communication with Hybrid/EV Powertrain Control Module
U1886 Battery Energy Control Module Lost Communication with Engine Control Module
U1888 Hybrid/EV Powertrain Control Module Lost Communication with Battery Energy Control Module
U18A1 Lost Communication with Coolant Temperature Control Module on High Voltage Energy Management CAN Bus
U18A2 Lost Communication with Fuel Pump Driver Control Module
U18A3 Lost Communication with Human Machine Interface Control Module
U18A4 Lost Communication with Hybrid/EV Battery DC Charging Communications Gateway Module on High Voltage Energy Management CAN Bus
U18A5 Lost Communication with Fuel Injector Control Module on Powertrain Expansion CAN Bus
U18B9 Primary High Speed CAN Bus Subnet Configuration List
U18BF Secondary High Speed CAN Bus Subnet Configuration List
U1900 Lost Communication With Speech to Text Interface Module
U1901 Lost Communication with Infotainment Multifunction Switch Module
U2098 MOST Communication Enable Circuit
U2099 High Speed Communication Enable Circuit
U209E Object Detection Control Module High Speed Communication Enable Circuit 1
U209F Object Detection Control Module High Speed Communication Enable Circuit 2
U2100 CAN Bus Communication
U2101 CAN Bus Maximum List of Control Modules
U2103 Fewer Controllers On Bus Than Programmed
U2105 Lost Communication with Engine Control Module
U2106 Lost Communication with Transmission Control Module
U2107 Lost Communication with Body Control Module
U2108 Lost Communication with Electronic Brake Control Module
U2125 Lost Communication with Telematic Unit
U2127 Lost Communication with Front HVAC Control Module
U2139 Lost Communication with Column Integration Module
U2144 Lost Communication with Distance Sensing Cruise Control Module
U2176 Lost Communication with Power Take-Off Control Module
U2178 Lost Communication With Trailer Interface Control Module
U2400 Fuel Injector Control Module High Speed CAN Bus Off
U2401 Battery Energy Control Module Dedicated Bus 1 Off
U2501 Invalid Data Received From Hybrid/EV Powertrain Control Module 2
U2502 Invalid Data Received From Electronic Brake Control Module on Chassis Expansion CAN Bus
U2503 Invalid Data Received From Object Detection Control Module
U2504 Invalid Data Received From Trailer Brake Driver Control Module
U2505 Invalid Data Received from Human Machine Interface Control Module on MOST Bus
U2506 Invalid Data Received From Dual Battery Control Module
U2507 Invalid Data Received from Instrument Cluster on MOST Bus
U2508 Invalid Data Received from Audio Amplifier on MOST Bus
U2602 Battery Energy Control Module Lost Communication with Hybrid/EV Powertrain Control Module 2
U2603 Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 1
U2604 Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 2
U2605 Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 3
U2606 Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 4
U2608 Electric A/C Compressor Control Module Lost Communication with Hybrid/EV Powertrain Control Module
U2609 Battery Charger Control Module Lost Communication with Hybrid/EV Powertrain Control Module
U2611 Auxiliary Transmission Fluid Pump Control Module Lost Communication with Hybrid/EV Powertrain Control Module
U2612 Battery Charger Control Module Lost Communication with Hybrid/EV Powertrain Control Module 2
U2613 Drive Motor 1 Control Module Lost Communication with Hybrid/EV Powertrain Control Module 2
U2614 Drive Motor 2 Control Module Lost Communication with Hybrid/EV Powertrain Control Module 2
U2615 Auxiliary Transmission Fluid Pump Control Module Lost Communication with Hybrid/EV Powertrain Control Module 2
U2616 Fuel Pump Driver Control Module Lost Communication with ECM
U2617 Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 5
U2618 Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 6
U2619 Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 7
U2620 Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 8
U2621 Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 9
U2622 Battery Energy Control Module Lost Communication with Hybrid/EV Battery Interface Control Module 10