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Home >> Land Rover >> 2016 >> LR4 Base >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) -- LR4/L319 >> Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) >> Description And Operation >> DTC U0421-81: Invalid Data Received from Suspension Control Module A - Invalid serial data received >> Possible Causes
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Possible Causes

NOTE: Adaptive speed control is disabled and instrument panel displays warning message "cruise not available"
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