DTC P0AA4-232: Hybrid Battery Negative Contactor Circuit Stuck Closed [11/2016 - ]: Description

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

Refer to the description for DTC P0AE6-225.

Refer to DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate
P0AA4-232	Hybrid Battery Negative Contactor Circuit Stuck Closed	System main relay stuck closed malfunction (HV battery negative (-) terminal side) (1 trip detection logic)	Hybrid battery junction block assembly Inverter with converter assembly Hybrid vehicle control ECU assembly Wire harness or connector	Does not come on	Master Warning Light: Comes on

RELATED DATA LIST

DTC No.	Data List
P0AA4-232	Power Resource VB VH-Voltage after Boosting

The following items can be helpful when performing repairs:

Data List

SMRP Status
SMRB Status
SMRG Status