DTC B14B0-87: Lost Communication with Heat Pump ECU (Local-CAN) Missing Message [08/2023 - ]: Description
WARNING: This page is about a different car, the 2025 Lexus RX 450h+ and 2024 Lexus RX 450h+. However, it is still accessible from the selected car via links, so may be relevant.
The heat pump cycle operation condition is sent from the heat pump ECU assembly to the air conditioning amplifier assembly and the vehicle condition is sent from the air conditioning amplifier assembly to the heat pump ECU assembly via CAN communication and control is performed to achieve the optimal operation condition.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| B14B0-87 | Lost Communication with Heat Pump ECU (Local-CAN) Missing Message | Diagnosis condition:
Malfunction status:
Detection time:
Trip:
|
|
Come on | Memorized | Air Conditioner | B | SAE Code:
|