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Land Rover
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2017
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Range Rover Autobiography
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) -- Range Rover/L405
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Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM)
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Description And Operation
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DTC B1A84-81: Car Configuration Data - Invalid serial data received
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Action
DTC B1A84-81: Car Configuration Data - Invalid serial data received: Action
Using JLR approved diagnostic equipment, check and update the car configuration file as necessary, clear the DTCs and retest