DTC U0424-81: HVAC Control Module to Hybrid Powertrain Control Module Invalid Serial Data Received [08/2020 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, and 2021 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
If the hybrid vehicle control ECU receives an invalid compressor control request from the air conditioning amplifier assembly via CAN communication, it will store this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| U0424-81 | HVAC Control Module to Hybrid Powertrain Control Module Invalid Serial Data Received | Invalid control request received from the air conditioning amplifier assembly (1 trip detection logic) |
Air conditioning amplifier assembly | Does not come on | Master Warning Light: Does not come on |