DTC P05B1-12: Active Grille Air Shutter "B" Circuit Short to Battery; DTC P05B1-14: Active Grille Air Shutter "B" Circuit Short to Ground or Open; DTC P05B1-31: Active Grille Air Shutter "B" No Signal [08/2020 - 12/2021]: Description

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Refer to DTC P059F-73.

Refer to DTC P059F-73: Active Grille Air Shutter "A" Actuator Stuck Closed; DTC P05A0-72: Active Grille Air Shutter "A" Actuator Stuck Open [08/2020 - 12/2021]

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P05B1-12	Active Grille Air Shutter "B" Circuit Short to Battery	All of the following conditions are met and the ECM receives a malfunction signal 17 times* (1 trip detection logic): The auxiliary battery voltage is 10.5 to 16 V. Grille shutter opening or closing operation is being performed. The Hall IC1 signal or Hall IC2 signal is stuck on the high side when the other signal is received normally.	Swing grille actuator assembly	Comes on	DTC stored	SAE Code: P05B3 DTC for Mexico Models: Does not apply
P05B1-14	Active Grille Air Shutter "B" Circuit Short to Ground or Open	All of the following conditions are met and the ECM receives a malfunction signal 17 times* (1 trip detection logic): The auxiliary battery voltage is 10.5 to 16 V. Grille shutter opening or closing operation is being performed. The Hall IC1 signal or Hall IC2 signal is stuck on the low side when the other signal is received normally.	Swing grille actuator assembly	Comes on	DTC stored	SAE Code: P05B4 DTC for Mexico Models: Does not apply
P05B1-31	Active Grille Air Shutter "B" No Signal	Both of the following conditions are met and the ECM receives a malfunction signal 17 times* (2 trip detection logic): Grille shutter opening or closing operation is being performed. The Hall IC1 signal and Hall IC2 signal are not received while the grille shutter motor (swing grille actuator assembly) is operating.	Swing grille actuator assembly	Comes on	DTC stored	SAE Code: P05B2 DTC for Mexico Models: Does not apply

HINT:

*: For every 65 ms that the ECM receives a grille shutter system malfunction signal from the grille shutter ECU (swing grille actuator assembly) 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.