DTC P0EC9-71: A/C Low Pressure Magnetic Valve Actuator Stuck [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 low pressure magnetic valve (No. 1 magnet valve assembly) is installed to the No. 2 air conditioner tube and accessory assembly and is open when the ignition switch is turned off. When the ignition switch is turned to ON, the low pressure magnetic valve (No. 1 magnet valve assembly) opens and closes according to heat pump air conditioning control.
During battery cooling, if the low pressure magnetic valve (No. 1 magnet valve assembly) is stuck open, the amount of refrigerant flowing to the battery is reduced and battery cooling functionality decreases.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| P0EC9-71 | A/C Low Pressure Magnetic Valve Actuator Stuck | Diagnosis condition:
Malfunction status:
Detection time:
Trip:
|
|
Come on | Memorized | Air Conditioner | B | SAE Code:
|
HINT:
Battery cooling control can be performed from the Active Test of the hybrid battery system.
Refer to DATA LIST / ACTIVE TEST [08/2023 - ]