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Home >> Toyota >> 2025 >> Prius Plug-In Hybrid SE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Hybrid Control System (HEV) - Diagnostic Codes (1 Of 4)) >> HYBRID CONTROL SYSTEM (for M20A-FXS) >> DTC P0AA0-00: Hybrid/EV Battery Positive Contactor Circuit Stuck Closed [12/2022 - ] >> Confirmation Driving Pattern

Confirmation Driving Pattern

WARNING: This page is about a different variant/trim than selected.

HINT: 

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Refer to UTILITY [12/2022 - ]

  1. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  2. Turn the ignition switch off and wait for 30 seconds or more.
  3. Turn the ignition switch to ON (READY).
  4. Turn the ignition switch off and wait for 30 seconds or more.
  5. Turn the ignition switch to ON (READY).

    HINT: 

    According to the display on the GTS, read the Data List and monitor the values of "Hybrid/EV Battery Voltage" and "VL-Voltage before Boosting" for 3 minutes. If the difference between "Hybrid/EV Battery Voltage" and "VL-Voltage before Boosting" is always less than 100 V, the vehicle has returned to normal.

  6. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
  7. Check the DTC judgment result.

    HINT: 

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE, perform driving pattern again.