DTC P0AA0-73: Hybrid/EV Battery Positive and Negative Contactor Actuator Stuck Closed [11/2021 - ]: Description
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
Refer to the description for DTC P0AE4-11.
Refer to DESCRIPTION
This circuit uses the hybrid vehicle control ECU to monitor the system main relays and stops the system if a malfunction is detected in the relays, because it may be impossible to shut off the high-voltage system if any of the relays becomes stuck.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P0AA0-73 | Hybrid/EV Battery Positive and Negative Contactor Actuator Stuck Closed | Even if both of the system main relays (HV battery positive (+) and negative (-) terminal side) are turned off, the inverter voltage (VH) does not drop. (1 trip detection logic) |
|
Does not come on | Master Warning: Comes on |