DTC U0073 (Keyless Access Power Control Unit) (2025)
DTC U0073 : F-CAN communication bus line error (BUS-OFF)
NOTE:
- If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: BODY ELECTRICAL TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE 1 AND TEST MODE 2 (WITHOUT THE HDS) or BODY ELECTRICAL TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A - INITIAL COMMUNICATION AND DTC CHECKS or BODY ELECTRICAL TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE B - CONTROL UNIT NOT COMMUNICATING .
- Before you troubleshoot, review the general troubleshooting information. - Refer to: HOW TO TROUBLESHOOT THE BODY ELECTRICAL .
- NETWORK COMMUNICATIONS SYSTEM DESCRIPTION (2021 2022 2023 2024 2025) .
- Troubleshoot the following DTCs first, if stored at the same time.
- Network Communication System: DTC U0065-00
| DTC Description | DTC |
|---|---|
| U0073 F-CAN communication bus line error (BUS-OFF) |
DTC (Keyless Access Power Control Unit)
- Problem verification
-1. Turn the vehicle to the ON mode.
-2. Clear the DTC with the HDS.
-3. Turn the vehicle to the OFF (LOCK) mode.
-4. Turn the vehicle to the ON mode.
-5. Check for DTCs with the HDS.
DTC Description DTC U0073 F-CAN communication bus line error (BUS-OFF) Is DTC U0073 indicated?
YES
Go to the Network Communication DTC U0065-00.
NO
Intermittent failure, the system is OK at this time.