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Home >> Toyota >> 2022 >> Avalon XLE >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Hybrid Control System (Nickel Metal Hydride) - Diagnostic Codes (P0A9B-P0ADD)) >> HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY) >> DTC P0AA0-00: Hybrid/EV Battery Positive Contactor Circuit Stuck Closed [04/2018 - 08/2020] >> Description

DTC P0AA0-00: Hybrid/EV Battery Positive Contactor Circuit Stuck Closed [04/2018 - 08/2020]: Description

WARNING: This page is about a different car, the 2020 Toyota Avalon and 2019 Toyota Avalon. 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

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0AA0-00 Hybrid/EV Battery Positive Contactor Circuit Stuck Closed Even the system main relay of HV battery positive (+) terminal side is turned off, the inverter voltage (VH) does not drop.
(1 trip detection logic)
  • HV battery junction block assembly
  • Inverter with converter assembly
  • Hybrid vehicle control ECU
  • Wire harness or connector
Does not come on Master Warning Light:
Comes on
RELATED DATA LIST

DTC No. Data List
P0AA0-00
  • Hybrid Battery Voltage
  • VH-Voltage after Boosting
  • VL-Voltage before Boosting