DTC codes / P05xx · Vehicle speed, idle control and auxiliary inputs / P05AE
P05AE indicates that the powertrain control module (PCM) has detected a performance fault with the active grille air shutter for bank B, meaning the shutter is not moving to or holding the commanded position and is considered stuck off. The PCM commands the shutter motor and monitors position feedback, and when the actual position does not match the expected position within a calibrated time, it sets this code.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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