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Home >> Lexus >> 2025 >> NX 250 FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (Hybrid Control System - Diagnostic Codes (1 Of 5)) >> Hybrid Control System >> DTC P0AA0-00: Hybrid/EV Battery Positive Contactor Circuit Stuck Closed [11/2021 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

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.
WARNING:

Refer to the precautions before inspecting high voltage circuit.

Refer to PRECAUTION [11/2021 - ]

NOTE:
  • To prevent the key from being locked in the vehicle, make sure to enter e-latch inspection mode and enable the manual release handle before disconnecting the cable from the negative (-) auxiliary battery terminal.

    Refer to INSPECTION MODE PROCEDURE [11/2021 - ]

  • If the DTCs are cleared or the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal before performing repairs, turning the ignition switch to ON (READY) may cause a malfunction. Do not turn the ignition switch to ON (READY).
  • After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

    Refer to BEFORE DISCONNECTING BATTERY [11/2021 - ]

  • When disconnecting and reconnecting the auxiliary battery

    HINT: 

    When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

    Refer to AUTOMATIC LEARNING CHART [11/2021 - ]

HINT: 

If DTC P0AA0-00 is output, the ignition switch cannot be turned to ON (READY).