DTC P05A2-11: Active Grille Air Shutter "A" Circuit Short to Ground; DTC P05A2-12: Active Grille Air Shutter "A" Circuit Short to Battery; DTC P05A2-13: Active Grille Air Shutter "A" Circuit Open [08/2020 - 08/2021]: Description

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P059F-73.

Refer to DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P05A2-11	Active Grille Air Shutter "A" Circuit Short to Ground	Either of the following conditions is met and the ECM receives a malfunction signal 17 times* (1 trip detection logic): Short to ground detected in the grille shutter motor (swing grille actuator assembly) when a grille shutter operation is requested. Short to ground detected in the motor drive circuit when a grille shutter operation is requested.	Swing grille actuator assembly	Comes on	DTC stored	SAE Code: P05A5
P05A2-12	Active Grille Air Shutter "A" Circuit Short to Battery	Either of the following conditions is met and the ECM receives a malfunction signal 17 times* (1 trip detection logic): Short to +B detected in the grille shutter motor (swing grille actuator assembly) when a grille shutter operation is requested. Short to +B detected in the motor drive circuit when a grille shutter operation is requested.	Swing grille actuator assembly	Comes on	DTC stored	SAE Code: P05A4
P05A2-13	Active Grille Air Shutter "A" Circuit Open	Either of the following conditions is met and the ECM receives a malfunction signal 17 times* (1 trip detection logic): Open detected in the grille shutter motor (swing grille actuator assembly) when a grille shutter operation is requested. Open detected in the grille shutter motor circuit when a grille shutter operation is requested. Internal malfunction detected in the grille shutter ECU (swing grille actuator assembly) when a grille shutter operation is requested.	Swing grille actuator assembly	Comes on	DTC stored	SAE Code: P05A2

HINT:

*: For every 65 ms that the ECM receives a grille shutter system malfunction signal from the grille shutter ECU the ECM determines it has received the signal 1 time. If the ECM determines the malfunction signal has been received 17 consecutive times (the signal is received for approximately 1 second continuously), it will store a DTC.