DTC U1293-87: Lost Communication between Hybrid Powertrain Control Module and Active Grille Air Shutter Missing Message [08/2020 - 08/2021]: Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
The grille shutter ECU and hybrid vehicle control ECU assembly send and receive signals via CAN communication.
If a communication error occurs between the grille shutter ECU and hybrid vehicle control ECU assembly, the ECM stores this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| U1293-87 | Lost Communication between Hybrid Powertrain Control Module and Active Grille Air Shutter Missing Message | All of the following conditions are met and the ECM receives a malfunction signal 17 times* (1 trip detection logic):
|
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Comes on | DTC stored | SAE Code: U1293 |
HINT:
*: For every 65 ms that the ECM receives a grille shutter system malfunction signal from the grille shutter ECU the ECM determines it has received the signal 1 time. If the ECM determines the malfunction signal has been received 17 consecutive times (the signal is received for approximately 1 second continuously), it will store a DTC.