OBDII U Code Definitions

OBDII U Code Definitions
Be sure to double check the codes.
Codes may be Manufacturer specific and may not match the ones listed here.
Check specific manufacturer pages on the site, as some of them,
we list the OBD2 codes on those pages for those specific vehicles.
U1000   SCP (J1850) Invalid or Missing Data for Primary Id
U1001   SCP (J1850) Invalid or Missing Data for Primary Id
U1002   SCP (J1850) Invalid or Missing Data for Primary Id
U1003   SCP (J1850) Invalid or Missing Data for Primary Id
U1004   SCP (J1850) Invalid or Missing Data for EEC Programming
U1005   SCP (J1850) Invalid or Missing Data for EEC Programming
U1006   SCP (J1850) Invalid or Missing Data for Primary Id
U1007   SCP (J1850) Invalid or Missing Data for Primary Id
U1008   SCP (J1850) Invalid or Missing Data for Engine Torque
U1009   SCP (J1850) Invalid or Missing Data for Engine Torque
U1010   SCP (J1850) Invalid or Missing Data for Engine Air Intake
U1011   SCP (J1850) Invalid or Missing Data for Engine Air Intake
U1012   SCP (J1850) Invalid or Missing Data for Primary Id
U1013   SCP (J1850) Invalid or Missing Data for Primary Id
U1014   SCP (J1850) Invalid or Missing Data for Primary Id
U1015   SCP (J1850) Invalid or Missing Data for Primary Id
U1016   SCP (J1850) Invalid or Missing Data for Primary Id
U1017   SCP (J1850) Invalid or Missing Data for Primary Id
U1018   SCP (J1850) Invalid or Missing Data for Throttle
U1019   SCP (J1850) Invalid or Missing Data for Throttle
U1020   SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch
U1021   SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch
U1022   SCP (J1850) Invalid or Missing Data for Primary Id
U1023   SCP (J1850) Invalid or Missing Data for Primary Id
U1024   SCP (J1850) Invalid or Missing Data for Primary Id
U1025   SCP (J1850) Invalid or Missing Data for Primary Id
U1026   SCP (J1850) Invalid or Missing Data for Engine RPM
U1027   SCP (J1850) Invalid or Missing Data for Engine RPM
U1028   SCP (J1850) Invalid or Missing Data for Primary Id
U1029   SCP (J1850) Invalid or Missing Data for Primary Id
U1030   SCP (J1850) Invalid or Missing Data for Experimental #1
U1031   SCP (J1850) Invalid or Missing Data for Experimental #1
U1032   SCP (J1850) Invalid or Missing Data for Primary Id
U1033   SCP (J1850) Invalid or Missing Data for Primary Id
U1034   SCP (J1850) Invalid or Missing Data for Primary Id
U1035   SCP (J1850) Invalid or Missing Data for Primary Id
U1036   SCP (J1850) Invalid or Missing Data for Wheels
U1037   SCP (J1850) Invalid or Missing Data for Wheels
U1038   SCP (J1850) Invalid or Missing Data for Primary Id
U1039   SCP (J1850) Invalid or Missing Data for Primary Id / Vehicle Speed
U1040   SCP (J1850) Invalid or Missing Data for Vehicle Speed
U1041   SCP (J1850) Invalid or Missing Data for Vehicle Speed
U1042   SCP (J1850) Invalid or Missing Data for Traction Control
U1043   SCP (J1850) Invalid or Missing Data for Traction Control
U1044   SCP (J1850) Invalid or Missing Data for Traction Motor
U1045   SCP (J1850) Invalid or Missing Data for Traction Motor
U1046   SCP (J1850) Invalid or Missing Data for Primary Id
U1047   SCP (J1850) Invalid or Missing Data for Primary Id
U1048   SCP (J1850) Invalid or Missing Data for Primary Id
U1049   SCP (J1850) Invalid or Missing Data for Primary Id
U1050   SCP (J1850) Invalid or Missing Data for Brakes
U1051   SCP (J1850) Invalid or Missing Data for Brakes
U1052   SCP (J1850) Invalid or Missing Data for Steering / Steering Wheel
U1053   SCP (J1850) Invalid or Missing Data for Steering / Steering Wheel
U1054   SCP (J1850) Invalid or Missing Data for Primary Id
U1055   SCP (J1850) Invalid or Missing Data for Primary Id
U1056   SCP (J1850) Invalid or Missing Data for Vehicle Configuration
U1057   SCP (J1850) Invalid or Missing Data for Vehicle Configuration
U1058   SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL
U1059   SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL
U1060   SCP (J1850) Invalid or Missing Data for Primary Id
U1061   SCP (J1850) Invalid or Missing Data for Primary Id
U1062   SCP (J1850) Invalid or Missing Data for Primary Id
U1063   SCP (J1850) Invalid or Missing Data for Primary Id
U1064   SCP (J1850) Invalid or Missing Data for Primary Id
U1065   SCP (J1850) Invalid or Missing Data for Primary Id
U1066   SCP (J1850) Invalid or Missing Data for Primary Id
U1067   SCP (J1850) Invalid or Missing Data for Primary Id
U1068   SCP (J1850) Invalid or Missing Data for Primary Id
U1069   SCP (J1850) Invalid or Missing Data for Primary Id
U1070   SCP (J1850) Invalid or Missing Data for Engine Sensors
U1071   SCP (J1850) Invalid or Missing Data for Engine Sensors
U1072   SCP (J1850) Invalid or Missing Data for Engine Coolant
U1073   SCP (J1850) Invalid or Missing Data for Engine Coolant
U1074   SCP (J1850) Invalid or Missing Data for Engine Oil
U1075   SCP (J1850) Invalid or Missing Data for Engine Oil Temp
U1076   SCP (J1850) Invalid or Missing Data for Primary Id
U1077   SCP (J1850) Invalid or Missing Data for Primary Id
U1078   SCP (J1850) Invalid or Missing Data for Primary Id
U1079   SCP (J1850) Invalid or Missing Data for Primary Id
U1080   SCP (J1850) Invalid or Missing Data for Primary Id
U1081   SCP (J1850) Invalid or Missing Data for Primary Id
U1082   SCP (J1850) Invalid or Missing Data for Engine Systems Other
U1083   SCP (J1850) Invalid or Missing Data for Engine Systems Other
U1084   SCP (J1850) Invalid or Missing Data for Powertrain Status Request
U1085   SCP (J1850) Invalid or Missing Data for Powertrain Status Request
U1086   SCP (J1850) Invalid or Missing Data for Primary Id
U1087   SCP (J1850) Invalid or Missing Data for Primary Id
U1088    SCP (J1850) Invalid or Missing Data for Suspension
U1089    SCP (J1850) Invalid or Missing Data for Suspension
U1090    SCP (J1850) Invalid or Missing Data for Non-Legislated Diagnostics
U1091    SCP (J1850) Invalid or Missing Data for Non-Legislated Diagnostics
U1092    SCP (J1850) Invalid or Missing Data for Primary Id
U1093    SCP (J1850) Invalid or Missing Data for Primary Id
U1094    SCP (J1850) Invalid or Missing Data for Experimental #2
U1095    SCP (J1850) Invalid or Missing Data for Experimental #2
U1096    SCP (J1850) Invalid or Missing Data for Primary Id
U1097    SCP (J1850) Invalid or Missing Data for Primary Id
U1098    SCP (J1850) Invalid or Missing Data for Vehicle Speed Control
U1099    SCP (J1850) Invalid or Missing Data for Vehicle Speed Control
U1100    SCP (J1850) Invalid or Missing Data for Primary Id
U1101    SCP (J1850) Invalid or Missing Data for Primary Id
U1102    SCP (J1850) Invalid or Missing Data for Primary Id
U1103    SCP (J1850) Invalid or Missing Data for Primary Id
U1104    SCP (J1850) Invalid or Missing Data for Chassis Status Request
U1105    SCP (J1850) Invalid or Missing Data for Chassis Status Request
U1106    SCP (J1850) Invalid or Missing Data for Legislated Diagnostics
U1107    SCP (J1850) Invalid or Missing Data for Legislated Diagnostics
U1108    SCP (J1850) Invalid or Missing Data for Electric Traction Drive (Inverter)
U1109    SCP (J1850) Invalid or Missing Data for Electric Traction Drive (Inverter)
U1110    SCP (J1850) Invalid or Missing Data for Primary Id
U1111    SCP (J1850) Invalid or Missing Data for Primary Id
U1112    SCP (J1850) Invalid or Missing Data for Primary Id
U1113    SCP (J1850) Invalid or Missing Data for Primary Id
U1114    SCP (J1850) Invalid or Missing Data for Charging System
U1115    SCP (J1850) Invalid or Missing Data for Charging System
U1116    SCP (J1850) Invalid or Missing Data for Electrical Energy Management
U1117   SCP (J1850) Invalid or Missing Data for Electrical Energy Management
U1118   SCP (J1850) Invalid or Missing Data for Primary Id
U1119   SCP (J1850) Invalid or Missing Data for Primary Id
U1120   SCP (J1850) Invalid or Missing Data for Primary Id
U1121   SCP (J1850) Invalid or Missing Data for Primary Id
U1122   SCP (J1850) Invalid or Missing Data for Odometer
U1123   SCP (J1850) Invalid or Missing Data for Odometer
U1124   SCP (J1850) Invalid or Missing Data for Primary Id
U1125   SCP (J1850) Invalid or Missing Data for Primary Id
U1126   SCP (J1850) Invalid or Missing Data for Primary Id
U1127   SCP (J1850) Invalid or Missing Data for Primary Id
U1128   SCP (J1850) Invalid or Missing Data for Primary Id
U1129   SCP (J1850) Invalid or Missing Data for Primary Id
U1130   SCP (J1850) Invalid or Missing Data for Fuel System
U1131   SCP (J1850) Invalid or Missing Data for Fuel System
U1132   SCP (J1850) Invalid or Missing Data for Vehicle Motion
U1133   SCP (J1850) Invalid or Missing Data for Vehicle Motion
U1134   SCP (J1850) Invalid or Missing Data for Ignition Switch / Starter
U1135   SCP (J1850) Invalid or Missing Data for Ignition Switch / Starter
U1136   SCP (J1850) Invalid or Missing Data for Telltales
U1137   SCP (J1850) Invalid or Missing Data for Telltales
U1138   SCP (J1850) Invalid or Missing Data for Primary Id
U1139   SCP (J1850) Invalid or Missing Data for Primary Id
U1140   SCP (J1850) Invalid or Missing Data for Gateway
U1141   SCP (J1850) Invalid or Missing Data for Gateway
U1142   SCP (J1850) Invalid or Missing Data for Primary Id
U1143   SCP (J1850) Invalid or Missing Data for Primary Id
U1144   SCP (J1850) Invalid or Missing Data for Primary Id
U1145   SCP (J1850) Invalid or Missing Data for Primary Id
U1146   SCP (J1850) Invalid or Missing Data for Vehicle Security
U1147   SCP (J1850) Invalid or Missing Data for Vehicle Security
U1148   SCP (J1850) Invalid or Missing Data for Audio Control
U1149   SCP (J1850) Invalid or Missing Data for Audio Control
U1150   SCP (J1850) Invalid or Missing Data for Audible Warnings
U1151   SCP (J1850) Invalid or Missing Data for Audible Warnings
U1152   SCP (J1850) Invalid or Missing Data for Experimental #3
U1153   SCP (J1850) Invalid or Missing Data for Experimental #3
U1154   SCP (J1850) Invalid or Missing Data for Compact Disc
U1155   SCP (J1850) Invalid or Missing Data for Compact Disc
U1156   SCP (J1850) Invalid or Missing Data for Digital Signal Processing
U1157   SCP (J1850) Invalid or Missing Data for Digital Signal Processing
U1158   SCP (J1850) Invalid or Missing Data for Antenna
U1159   SCP (J1850) Invalid or Missing Data for Antenna
U1160   SCP (J1850) Invalid or Missing Data for Primary Id
U1161   SCP (J1850) Invalid or Missing Data for Primary Id
U1162   SCP (J1850) Invalid or Missing Data for Digital Audio Tape
U1163   SCP (J1850) Invalid or Missing Data for Digital Audio Tape
U1164   SCP (J1850) Invalid or Missing Data for Tuner / Receiver
U1165   SCP (J1850) Invalid or Missing Data for Tuner / Receiver
U1166   SCP (J1850) Invalid or Missing Data for Cassette Tape
U1167   SCP (J1850) Invalid or Missing Data for Cassette Tape
U1168   SCP (J1850) Invalid or Missing Data for Primary Id
U1169   SCP (J1850) Invalid or Missing Data for Primary Id
U1170   SCP (J1850) Invalid or Missing Data for Cellular Phone / Paging System
U1171   SCP (J1850) Invalid or Missing Data for Cellular Phone / Paging System
U1172   SCP (J1850) Invalid or Missing Data for Remote Button Control
U1173   SCP (J1850) Invalid or Missing Data for Remote Button Control
U1174   SCP (J1850) Invalid or Missing Data for Primary Id
U1175   SCP (J1850) Invalid or Missing Data for Primary Id
U1176   SCP (J1850) Invalid or Missing Data for Primary Id
U1177   SCP (J1850) Invalid or Missing Data for Primary Id
U1178   SCP (J1850) Invalid or Missing Data for Climate Control (HVAC)
U1179   SCP (J1850) Invalid or Missing Data for Climate Control (HVAC)
U1180   SCP (J1850) Invalid or Missing Data for Personalization (Memory) Features
U1181   SCP (J1850) Invalid or Missing Data for Personalization (Memory) Features
U1182   SCP (J1850) Invalid or Missing Data for Primary Id
U1183   SCP (J1850) Invalid or Missing Data for Primary Id
U1184   SCP (J1850) Invalid or Missing Data for Window Wiper / Washer
U1185   SCP (J1850) Invalid or Missing Data for Window Wiper / Washer
U1186   SCP (J1850) Invalid or Missing Data for Primary Id
U1187   SCP (J1850) Invalid or Missing Data for Primary Id
U1188   SCP (J1850) Invalid or Missing Data for Primary Id
U1189   SCP (J1850) Invalid or Missing Data for Primary Id
U1190   SCP (J1850) Invalid or Missing Data for Primary Id
U1191   SCP (J1850) Invalid or Missing Data for Primary Id
U1192   SCP (J1850) Invalid or Missing Data for Primary Id
U1193   SCP (J1850) Invalid or Missing Data for Primary Id
U1194   SCP (J1850) Invalid or Missing Data for Mirrors
U1195   SCP (J1850) Invalid or Missing Data for Mirrors
U1196   SCP (J1850) Invalid or Missing Data for Door Locks
U1197   SCP (J1850) Invalid or Missing Data for Door Locks
U1198   SCP (J1850) Invalid or Missing Data for External Access (Doors)
U1199   SCP (J1850) Invalid or Missing Data for External Access (Doors)
U1200   SCP (J1850) Invalid or Missing Data for Seat Motion / Control
U1201   SCP (J1850) Invalid or Missing Data for Seat Motion / Control
U1202   SCP (J1850) Invalid or Missing Data for Windows
U1203   SCP (J1850) Invalid or Missing Data for Windows
U1204   SCP (J1850) Invalid or Missing Data for Steering Column
U1205   SCP (J1850) Invalid or Missing Data for Steering Column
U1206   SCP (J1850) Invalid or Missing Data for Primary Id
U1207   SCP (J1850) Invalid or Missing Data for Primary Id
U1208   SCP (J1850) Invalid or Missing Data for Seat Switches
U1209   SCP (J1850) Invalid or Missing Data for Seat Switches
U1210   SCP (J1850) Invalid or Missing Data for Restraints
U1211   SCP (J1850) Invalid or Missing Data for Restraints
U1212   SCP (J1850) Invalid or Missing Data for Primary Id
U1213   SCP (J1850) Invalid or Missing Data for Primary Id
U1214   SCP (J1850) Invalid or Missing Data for Primary Id
U1215   SCP (J1850) Invalid or Missing Data for Primary Id
U1216   SCP (J1850) Invalid or Missing Data for External Lamp Outage
U1217   SCP (J1850) Invalid or Missing Data for External Lamp Outage
U1218   SCP (J1850) Invalid or Missing Data for External Lamps
U1219    SCP (J1850) Invalid or Missing Data for External Lamps
U1220    SCP (J1850) Invalid or Missing Data for Interior Lamp Outage
U1221    SCP (J1850) Invalid or Missing Data for Interior Lamp Outage
U1222    SCP (J1850) Invalid or Missing Data for Interior Lamps
U1223    SCP (J1850) Invalid or Missing Data for Interior Lamps
U1224    SCP (J1850) Invalid or Missing Data for Primary Id
U1225    SCP (J1850) Invalid or Missing Data for Primary Id
U1226    SCP (J1850) Invalid or Missing Data for Body Status Request
U1227    SCP (J1850) Invalid or Missing Data for Body Status Request
U1228    SCP (J1850) Invalid or Missing Data for Tires
U1229    SCP (J1850) Invalid or Missing Data for Tires
U1230    SCP (J1850) Invalid or Missing Data for Electric Defrost
U1231    SCP (J1850) Invalid or Missing Data for Electric Defrost
U1232    SCP (J1850) Invalid or Missing Data for Navigation
U1233    SCP (J1850) Invalid or Missing Data for Navigation
U1234    SCP (J1850) Invalid or Missing Data for Displays
U1235    SCP (J1850) Invalid or Missing Data for Displays
U1236    SCP (J1850) Invalid or Missing Data for Memory Storage
U1237    SCP (J1850) Invalid or Missing Data for Memory Storage
U1238    SCP (J1850) Invalid or Missing Data for Experimental #4
U1239    SCP (J1850) Invalid or Missing Data for Experimental #4
U1240    SCP (J1850) Invalid or Missing Data for Primary Id
U1241    SCP (J1850) Invalid or Missing Data for Primary Id
U1242    SCP (J1850) Invalid or Missing Data for Exterior Environment
U1243    SCP (J1850) Invalid or Missing Data for Exterior Environment
U1244    SCP (J1850) Invalid or Missing Data for Interior Environment
U1245    SCP (J1850) Invalid or Missing Data for Interior Environment
U1246    SCP (J1850) Invalid or Missing Data for Primary Id
U1247    SCP (J1850) Invalid or Missing Data for Primary Id
U1248    SCP (J1850) Invalid or Missing Data for Time / Date
U1249    SCP (J1850) Invalid or Missing Data for Time / Date
U1250    SCP (J1850) Invalid or Missing Data for Vehicle Id (VIN)
U1251    SCP (J1850) Invalid or Missing Data for Vehicle Id (VIN)
U1252    SCP (J1850) Invalid or Missing Data for Class A Functions
U1253    SCP (J1850) Invalid or Missing Data for Class A Functions
U1254    SCP (J1850) Invalid or Missing Data for Network Control
U1255    SCP (J1850) Invalid or Missing Data for Network Control
U1260    SCP (J1850) Single Ended (+) Circuit Failure
U1261    SCP (J1850) Single Ended (-) Circuit Failure
U1262    SCP (J1850) Communication Bus Fault
U1308    SCP (J1850) Invalid or Missing Data for Function Read  Engine Torque
U1341    SCP (J1850) Invalid or Missing Data for Function Read Vehicle Speed
U1430    SCP (J1850) Invalid or Missing Data for Function Read Fuel System
U1451    SCP (J1850) Invalid or Missing Data for Function Read Audible Warnings /Anti-Theft Module, Vehicle Immobilized
U1612    SCP (J1850) Lack of Acknowledgment for Primary Id
U1736    SCP (J1850) Lack of Acknowledgment for  Telltales
U1750    SCP (J1850) Lack of Acknowledgment for  Audible Warnings
U1794    SCP (J1850) Lack of Acknowledgment for Mirrors
U1797    SCP (J1850) Lack of Acknowledgment for  Door Locks
U1798    SCP (J1850) Lack of Acknowledgment for  External Access (Doors)
U1806    SCP (J1850) Lack of Acknowledgment for Primary Id
U1900    CAN Communication Bus Fault
U1950    UPB Communication Bus Fault
U2000    Audio Rear Control Unit is Not Responding
U2001    Audio Tape Deck Unit is Not Responding
U2002    Audio Bezel is Not Responding
U2003    Audio Compact Disk / Disk Jockey Unit is Not Responding
U2004    Audio Steering Wheel Control Unit is Not Responding
U2005    Audio Rear Integrated Control Panel Unit is Not Responding
U2006    Audio Remote Climate Control Unit is Not Responding
U2007    Audio Navigation Unit is Not Responding
U2008    Audio Phone is Not Responding
U2009    Audio Front Control Module (ACM) is Not Responding
U2010    Module is Not Responding (Non SCP)
U2011    Module Transmitted Invalid Data (Non SCP)
U2012    Communication Bus Error (Non SCP)
U2013    Compass Module is not Responding
U2014    Audio Subwoofer Unit is Not Responding
U2015    Signal Link Fault (Non SCP)
U2016    Signal Link Short to Ground (Non SCP) / From NGV Module
U2017    Driver Side Crash Sensor Communication Fault (Non SCP)
U2018    Passenger Side Crash Sensor Communication Fault (Non SCP)
U2019    Audio Voice Module Not Responding
U2020    Audio Center Amp is not responding
U2021    Invalid /fault data received (Non SCP)
U2150    SCP (J1850) Invalid Data from REM
U2152    SCP (J1850) Invalid Data from GEM
U2160    SCP (J1850) Invalid Data from IC
U2195    SCP (J1850) Invalid Data from SCLM
U2500    (CAN) Lack of Acknowledgement From Engine Management