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2021
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G90 5.0 Ultimate, RWD
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Repair and Diagnosis
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Accessories & Equipment
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Interior/Exterior Trim
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Active Air Flap Diagnosis
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DTC U0100: Lost Communication With ECM/PCM 'A'
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DTC Information
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DTC Description
DTC Description
AAF Actuator (Module) sets DTC U0100 when AAF detects that there is no signal from ECM (PCM).