DTC U0073/49 Control Module Communication Bus Off; DTC U0105/41 Lost Communication with Fuel Injector Control Module; DTC U0121/42 Lost Communication with Anti-Lock Brake System (ABS) Control Module: Description
WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
The power steering ECU receives signals from the ECM and the skid control ECU via the CAN communication system.
DTC DETECTION CONDITION CHART
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0073/49 | Control Module Communication Bus Off | CAN communication system |
| U0105/41 | Lost Communication with Fuel Injector Control Module |
|
| U0121/42 | Lost Communication with Anti-Lock Brake System (ABS) Control Module |
|
HINT:
- When 2 or more DTCs starting with [U] are output simultaneously, inspect the connectors and wire harness of each ECU.
- If DTC U0105/41 is output, first erase the DTCs. Then turn the ignition switch from OFF to ON. If DTC U0105/41 is not output again, there is no malfunction.