DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message [12/2019 - 10/2022]: Description
WARNING: This page is about a different variant/trim than selected.
The engine control unit and transmission control unit are located inside the ECM. The engine control unit intercommunicates with the transmission control unit using CAN communication.
If there is a problem in this intercommunication, the ECM stores this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| U0100-87 | Lost Communication with ECM/PCM "A" Missing Message | While the ignition switch is ON, there is no communication between the engine control unit and transmission control unit for 1.25 seconds or more (1-trip detection logic). | ECM | Comes on | DTC stored | SAE Code: U0100 |