DTC U0101 Lost Communication with TCM: Description
WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
The ECM (engine control unit) intercommunicates with the TCM (transmission control ECU) through the Controller Area Network (CAN)
If there is a problem in this intercommunication, the ECM sets a DTC
DTC DETECTION CONDITION CHART
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0101 | Following conditions are met for 1 25 seconds (1 trip detection logic)
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