DTC U0100: Lost Communication with ECM / PCM "A" [12/2013 - 11/2016]: Description
WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
The engine control unit communicates with the TCM using the Controller Area Network (CAN).
If there is a problem in this communication, the TCM stores this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory |
|---|---|---|---|---|---|
| U0100 | Lost Communication with ECM / PCM "A" | Following conditions are met for 1.25 seconds (1 trip detection logic):
|
|
Comes on | DTC stored |