Communication System DTCS (U Codes)
COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) CHART
| DTC | Description | Source | Action |
|---|---|---|---|
| U0073 | Control Module Communication BUS OFF | ABS Module | REFER to MODULE CONFIGURATION . |
| U1026 | SCP (J1850) Invalid or Missing Data for Engine RPM | Air Suspension Module | See INTRODUCTION - GASOLINE article |
| U1026 | SCP (J1850) Invalid or Missing Data for Engine RPM | VAPS Module | See INTRODUCTION - GASOLINE article |
| U1073 | SCP (J1850) Invalid or Missing Data For Engine Coolant | EATC Module | See INTRODUCTION - GASOLINE article. |
| U1341 | SCP (J1850) Invalid or Missing Data For Vehicle Speed | EATC Module | REFER to MODULE CONFIGURATION . |
| U1900 | CAN Communication BUS Fault-Receive Error | ABS Module | REFER to MODULE CONFIGURATION . |
| U1900 | CAN Communication Bus Fault - Receive Error | FSM | If any ABS module DTCs are present, REFER to ANTI-LOCK CONTROL . If no ABS module DTCs are present, REFER to MODULE COMMUNICATIONS NETWORK . |
| U2023 | Fault Received From External Node | ABS Module | REFER to MODULE CONFIGURATION . |