Network Codes
1,532 OBD-II diagnostic trouble codes in this category.
Showing page 9 of 16 (1,532 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| U0553 | Invalid Data Received From Lighting Control Module - Rear B | Data Integrity | High |
| U0554 | Invalid Data Received From Accessory Protocol Interface Module | Data Integrity | High |
| U0555 | Invalid Data Received From Remote Start Module | Data Integrity | High |
| U0556 | Invalid Data Received From Front Display Interface Module | Data Integrity | High |
| U0557 | Invalid Data Received From Front Controls Interface Module A | Data Integrity | High |
| U0558 | Invalid Data Received From Front Controls/Display Interface Module | Data Integrity | High |
| U0559 | Invalid Data Received From Radio Transceiver | Data Integrity | High |
| U055A | Invalid Data Received From Special Purpose Vehicle Control Module A | Data Integrity | High |
| U055B | Invalid Data Received From Special Purpose Vehicle Control Module B | Data Integrity | High |
| U055C | Invalid Data Received From Special Purpose Vehicle Control Module C | Data Integrity | High |
| U055D | Invalid Data Received From Special Purpose Vehicle Control Module D | Data Integrity | High |
| U055E | Invalid Data Received From Front Controls Interface Module B | Data Integrity | High |
| U055F | Invalid Data Received From Electronic Brake Booster Control Module A | Data Integrity | High |
| U0560 | Invalid Data Received From Electronic Brake Booster Control Module B | Data Integrity | High |
| U0561 | Invalid Data Received From Seat Control Switch Module A | Data Integrity | High |
| U0562 | Invalid Data Received From Seat Control Switch Module B | Data Integrity | High |
| U0563 | Invalid Data Received From Audio Amplifier B | Data Integrity | High |
| U0564 | Invalid Data Received From Speech Recognition Module | Data Integrity | High |
| U0565 | Invalid Data Received From Camera Module - Rear | Data Integrity | High |
| U0566 | Invalid Data Received From Image Processing Sensor A | Data Integrity | High |
| U0567 | Invalid Data Received From Image Processing Sensor B | Data Integrity | High |
| U0568 | Invalid Data Received From Image Processing Sensor C | Data Integrity | High |
| U0569 | Invalid Data Received From Image Processing Sensor D | Data Integrity | High |
| U056A | Invalid Data Received From Image Processing Sensor E | Data Integrity | High |
| U056B | Invalid Data Received From Image Processing Sensor F | Data Integrity | High |
| U056C | Invalid Data Received From Image Processing Sensor G | Data Integrity | High |
| U056D | Invalid Data Received From Image Processing Sensor H | Data Integrity | High |
| U056E | Invalid Data Received From Image Processing Sensor I | Data Integrity | High |
| U056F | Invalid Data Received From Image Processing Sensor J | Data Integrity | High |
| U0570 | Invalid Data Received From Image Processing Sensor K | Data Integrity | High |
| U0571 | Invalid Data Received From Image Processing Sensor L | Data Integrity | High |
| U0572 | Invalid Data Received from Vehicle Motion Control Module A | Data Integrity | High |
| U0573 | Invalid Data Received from Vehicle Motion Control Module B | Data Integrity | High |
| U0574 | Invalid Data Received From Lighting Driver Control Module “A” | Data Integrity | High |
| U0575 | Invalid Data Received From Lighting Driver Control Module “B” | Data Integrity | High |
| U0576 | Invalid Data Received From Lighting Driver Control Module “C” | Data Integrity | High |
| U0577 | Invalid Data Received From Lighting Driver Control Module “D” | Data Integrity | High |
| U0578 | Invalid Data Received From Seat Module K | Data Integrity | High |
| U0579 | Invalid Data Received From Seat Module L | Data Integrity | High |
| U057B | Invalid Data Received From Battery Charger Control Module C | Data Integrity | High |
| U057C | Invalid Data Received From Battery Charger Control Module D | Data Integrity | High |
| U057D | Invalid Data Received From Off-Board Charger Control Module | Data Integrity | High |
| U0580 | Invalid Data Received From Haptic Control Module | Data Integrity | High |
| U0585 | Invalid Data Received From Active Grille Air Shutter Module A | Data Integrity | High |
| U0586 | Invalid Data Received From Active Grille Air Shutter Module B | Data Integrity | High |
| U0587 | Invalid Data Received From With Radiator Anti Tamper Device | Data Integrity | High |
| U0588 | Invalid Data Received From Transmission Fluid Pump Module A | Data Integrity | High |
| U0589 | Invalid Data Received From DC/AC Converter Control Module A | Data Integrity | High |
| U058A | Invalid Data Received From DC/AC Converter Control Module B | Data Integrity | High |
| U058B | Invalid Data Received From Transmission Fluid Pump Module B | Data Integrity | High |
| U058C | Invalid Data Received From Active Grille Air Shutter Module C | Data Integrity | High |
| U058D | Invalid Data Received From Active Grille Air Shutter Module D | Data Integrity | High |
| U0592 | Invalid Data Received From Gear Shift Control Module B | Data Integrity | High |
| U0593 | Invalid Data Received From Drive Motor Control Module B | Data Integrity | High |
| U0594 | Invalid Data Received From Hybrid/EV Powertrain Control Module | Data Integrity | High |
| U0595 | Invalid Data Received From Powertrain Control Monitor Module | Data Integrity | High |
| U0596 | Invalid Data Received From AC/AC Converter Control Module | Data Integrity | High |
| U0597 | Invalid Data Received From AC/DC Converter Control Module A | Data Integrity | High |
| U0598 | Invalid Data Received From AC/DC Converter Control Module B | Data Integrity | High |
| U0599 | Invalid Data Received From DC/DC Converter Control Module A | Data Integrity | High |
| U059A | Invalid Data Received From DC/DC Converter Control Module B | Data Integrity | High |
| U059B | Invalid Data Received From Hybrid/EV Battery Pack Sensor Module | Data Integrity | High |
| U059C | Invalid Data Received From Drive Motor Control Module C | Data Integrity | High |
| U059D | Invalid Data Received From Drive Motor Control Module D | Data Integrity | High |
| U059E | Invalid Data Received From NOx Sensor A | Data Integrity | High |
| U059F | Invalid Data Received From NOx Sensor B | Data Integrity | High |
| U05A0 | Invalid Data Received from Evaporative Emission System Leak Detection Control Module | Data Integrity | High |
| U05A1 | NOx Sensor A Received Invalid Data From ECM/PCM | Data Integrity | High |
| U05A2 | NOx Sensor B Received Invalid Data From ECM/PCM | Data Integrity | High |
| U05A3 | Invalid Data Received From Reductant Quality Module | Data Integrity | High |
| U05A4 | Particulate Matter Sensor Received Invalid Data From ECM/PCM | Data Integrity | High |
| U05A5 | Invalid Data Received From NH3 Sensor | Data Integrity | High |
| U05A6 | Invalid Data Received from Reductant Heater Control Module | Data Integrity | High |
| U05A7 | Invalid Data Received From Safety Integration Control Module | Data Integrity | High |
| U05A8 | Invalid Data Received From NOx Sensor C | Data Integrity | High |
| U05A9 | NOx Sensor C Received Invalid Data From ECM/PCM | Data Integrity | High |
| U05AA | Invalid Data Received From Charge Air Cooler Coolant Pump | Data Integrity | High |
| U05AB | Invalid Data Received From Engine Disconnect Clutch | Data Integrity | High |
| U05AC | Invalid Data Received From Vehicle Thermal Management Control Module | Data Integrity | High |
| U05B2 | Invalid Data Received From Comfort and Convenience Display A | Data Integrity | High |
| U05B3 | Invalid Data Received From Comfort and Convenience Display B | Data Integrity | High |
| U05B4 | Invalid Data Received From Driver Monitoring System Module | Data Integrity | High |
| U05B5 | Invalid Data Received From Front Radar Module A | Data Integrity | High |
| U05B6 | Invalid Data Received From Front Radar Module B | Data Integrity | High |
| U05B7 | Invalid Data Received From Rear Radar Module A | Data Integrity | High |
| U05B8 | Invalid Data Received From Rear Radar Module B | Data Integrity | High |
| U05B9 | Invalid Data Received From Rear Radar Module C | Data Integrity | High |
| U05BA | Invalid Data Received From Rear Radar Module D | Data Integrity | High |
| U05BD | Invalid Data Received From Localization and Mapping Module | Data Integrity | High |
| U05BE | Invalid Data Received From Night Vision Control Module | Data Integrity | High |
| U05BF | Invalid Data Received From Trailer Backup Assist Control Module | Data Integrity | High |
| U05C0 | Invalid Data Received From Interior Lighting Control Module B | Data Integrity | High |
| U05C1 | Invalid Data Received From Active Radiator Air Flow Control Module A | Data Integrity | High |
| U0600 | Lost Communication With Engine Oil Pressure Sensor A | ECM Communication | Critical |
| U0601 | Lost Communication With Particulate Filter Pressure Sensor A | Module Communication | High |
| U0602 | Lost Communication With Particulate Filter Pressure Sensor B | Module Communication | High |
| U0603 | Lost Communication With Fuel Pressure Sensor A | Module Communication | High |
| U0604 | Lost Communication With Fuel Pressure Sensor B | Module Communication | High |
| U0605 | Lost communication With A/C Refrigerant Sensor A | Module Communication | High |
| U0606 | Lost Communication With Throttle/Pedal Position Sensor/Switch A | Module Communication | High |
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.