Network Codes
1,532 OBD-II diagnostic trouble codes in this category.
Showing page 13 of 16 (1,532 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| U1146 | SCP (J1850) Invalid or Missing Data for Vehicle Security | CAN Bus | Medium |
| U1147 | SCP (J1850) Invalid or Missing Data for Vehicle Security | CAN Bus | Medium |
| U1148 | SCP (J1850) Invalid or Missing Data for Audio Control | CAN Bus | Medium |
| U1149 | SCP (J1850) Invalid or Missing Data for Audio Control | CAN Bus | Medium |
| U1150 | SCP (J1850) Invalid or Missing Data for Audible Warnings | CAN Bus | Medium |
| U1151 | SCP (J1850) Invalid or Missing Data for Audible Warnings | CAN Bus | Medium |
| U1152 | SCP (J1850) Invalid or Missing Data for Experimental #3 | CAN Bus | Medium |
| U1153 | SCP (J1850) Invalid or Missing Data for Experimental #3 | CAN Bus | Medium |
| U1154 | SCP (J1850) Invalid or Missing Data for Compact Disc | CAN Bus | Medium |
| U1155 | SCP (J1850) Invalid or Missing Data for Compact Disc | CAN Bus | Medium |
| U1156 | SCP (J1850) Invalid or Missing Data for Digital Signal Processing | CAN Bus | Medium |
| U1157 | SCP (J1850) Invalid or Missing Data for Digital Signal Processing | CAN Bus | Medium |
| U1158 | SCP (J1850) Invalid or Missing Data for Antenna | CAN Bus | Medium |
| U1159 | SCP (J1850) Invalid or Missing Data for Antenna | CAN Bus | Medium |
| U1160 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1161 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1162 | SCP (J1850) Invalid or Missing Data for Digital Audio Tape | CAN Bus | Medium |
| U1163 | SCP (J1850) Invalid or Missing Data for Digital Audio Tape | CAN Bus | Medium |
| U1164 | SCP (J1850) Invalid or Missing Data for Tuner / Receiver | CAN Bus | Medium |
| U1165 | SCP (J1850) Invalid or Missing Data for Tuner / Receiver | CAN Bus | Medium |
| U1166 | SCP (J1850) Invalid or Missing Data for Cassette Tape | CAN Bus | Medium |
| U1167 | SCP (J1850) Invalid or Missing Data for Cassette Tape | CAN Bus | Medium |
| U1168 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1169 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1170 | SCP (J1850) Invalid or Missing Data for Cellular Phone / Paging System | CAN Bus | Medium |
| U1171 | SCP (J1850) Invalid or Missing Data for Cellular Phone / Paging System | CAN Bus | Medium |
| U1172 | SCP (J1850) Invalid or Missing Data for Remote Button Control | CAN Bus | Medium |
| U1173 | SCP (J1850) Invalid or Missing Data for Remote Button Control | CAN Bus | Medium |
| U1174 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1175 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1176 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1177 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1178 | SCP (J1850) Invalid or Missing Data for Climate Control (HVAC) | CAN Bus | Medium |
| U1179 | SCP (J1850) Invalid or Missing Data for Climate Control (HVAC) | CAN Bus | Medium |
| U1180 | SCP (J1850) Invalid or Missing Data for Personalization (Memory) Features | CAN Bus | Medium |
| U1181 | SCP (J1850) Invalid or Missing Data for Personalization (Memory) Features | CAN Bus | Medium |
| U1182 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1183 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1184 | SCP (J1850) Invalid or Missing Data for Window Wiper / Washer | CAN Bus | Medium |
| U1185 | SCP (J1850) Invalid or Missing Data for Window Wiper / Washer | CAN Bus | Medium |
| U1186 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1187 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1188 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1189 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1190 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1191 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1192 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1193 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1194 | SCP (J1850) Invalid or Missing Data for Mirrors | CAN Bus | Medium |
| U1195 | SCP (J1850) Invalid or Missing Data for Mirrors | CAN Bus | Medium |
| U1196 | SCP (J1850) Invalid or Missing Data for Door Locks | CAN Bus | Medium |
| U1197 | SCP (J1850) Invalid or Missing Data for Door Locks | CAN Bus | Medium |
| U1198 | SCP (J1850) Invalid or Missing Data for External Access (Doors) | CAN Bus | Medium |
| U1199 | SCP (J1850) Invalid or Missing Data for External Access (Doors) | CAN Bus | Medium |
| U1200 | SCP (J1850) Invalid or Missing Data for Seat Motion / Control | CAN Bus | Medium |
| U1201 | SCP (J1850) Invalid or Missing Data for Seat Motion / Control | CAN Bus | Medium |
| U1202 | SCP (J1850) Invalid or Missing Data for Windows | CAN Bus | Medium |
| U1203 | SCP (J1850) Invalid or Missing Data for Windows | CAN Bus | Medium |
| U1204 | SCP (J1850) Invalid or Missing Data for Steering Column | CAN Bus | Medium |
| U1205 | SCP (J1850) Invalid or Missing Data for Steering Column | CAN Bus | Medium |
| U1206 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1207 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1208 | SCP (J1850) Invalid or Missing Data for Seat Switches | CAN Bus | Medium |
| U1209 | SCP (J1850) Invalid or Missing Data for Seat Switches | CAN Bus | Medium |
| U1210 | SCP (J1850) Invalid or Missing Data for Restraints | CAN Bus | Medium |
| U1211 | SCP (J1850) Invalid or Missing Data for Restraints | CAN Bus | Medium |
| U1212 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1213 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1214 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1215 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1216 | SCP (J1850) Invalid or Missing Data for External Lamp Outage | CAN Bus | Medium |
| U1217 | SCP (J1850) Invalid or Missing Data for External Lamp Outage | CAN Bus | Medium |
| U1218 | SCP (J1850) Invalid or Missing Data for External Lamps | CAN Bus | Medium |
| U1219 | SCP (J1850) Invalid or Missing Data for External Lamps | CAN Bus | Medium |
| U1220 | SCP (J1850) Invalid or Missing Data for Interior Lamp Outage | CAN Bus | Medium |
| U1221 | SCP (J1850) Invalid or Missing Data for Interior Lamp Outage | CAN Bus | Medium |
| U1222 | SCP (J1850) Invalid or Missing Data for Interior Lamps | CAN Bus | Medium |
| U1223 | SCP (J1850) Invalid or Missing Data for Interior Lamps | CAN Bus | Medium |
| U1224 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1225 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1226 | SCP (J1850) Invalid or Missing Data for Body Status Request | CAN Bus | Medium |
| U1227 | SCP (J1850) Invalid or Missing Data for Body Status Request | CAN Bus | Medium |
| U1228 | SCP (J1850) Invalid or Missing Data for Tires | CAN Bus | Medium |
| U1229 | SCP (J1850) Invalid or Missing Data for Tires | CAN Bus | Medium |
| U1230 | SCP (J1850) Invalid or Missing Data for Electric Defrost | CAN Bus | Medium |
| U1231 | SCP (J1850) Invalid or Missing Data for Electric Defrost | CAN Bus | Medium |
| U1232 | SCP (J1850) Invalid or Missing Data for Navigation | CAN Bus | Medium |
| U1233 | SCP (J1850) Invalid or Missing Data for Navigation | CAN Bus | Medium |
| U1234 | SCP (J1850) Invalid or Missing Data for Displays | CAN Bus | Medium |
| U1235 | SCP (J1850) Invalid or Missing Data for Displays | CAN Bus | Medium |
| U1236 | SCP (J1850) Invalid or Missing Data for Memory Storage | CAN Bus | Medium |
| U1237 | SCP (J1850) Invalid or Missing Data for Memory Storage | CAN Bus | Medium |
| U1238 | SCP (J1850) Invalid or Missing Data for Experimental #4 | CAN Bus | Medium |
| U1239 | SCP (J1850) Invalid or Missing Data for Experimental #4 | CAN Bus | Medium |
| U1240 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1241 | SCP (J1850) Invalid or Missing Data for Primary Id | CAN Bus | Medium |
| U1242 | SCP (J1850) Invalid or Missing Data for Exterior Environment | CAN Bus | Medium |
| U1243 | SCP (J1850) Invalid or Missing Data for Exterior Environment | CAN Bus | Medium |
| U1244 | SCP (J1850) Invalid or Missing Data for Interior Environment | CAN Bus | Medium |
| U1245 | SCP (J1850) Invalid or Missing Data for Interior Environment | CAN Bus | Medium |
About Network Codes
This page lists all 1,532 OBD-II diagnostic trouble codes classified under the Network category. These codes are stored by your vehicle's onboard computer when a sensor detects a malfunction in the network system. Each code begins with a letter indicating the system (P for Powertrain, B for Body, C for Chassis, U for Network) followed by four digits that identify the specific fault.
When your check engine light comes on, an OBD-II scanner reads these stored codes to help pinpoint the problem. Generic codes (where the second digit is 0) follow the SAE J2012 standard and mean the same thing on every vehicle. Manufacturer-specific codes (where the second digit is 1) may have different meanings depending on the vehicle brand.
Click any code in the table above to see its full description, possible causes, common symptoms, and step-by-step repair guidance. Use the search box to quickly find a specific code within this category.