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Home >> Land Rover >> 2021 >> Range Rover SVAutobiography Dynamic Blk. >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Body Control Module (BCM) -- Range Rover/L405 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Body Control Module (BCM) (G2165406) >> DTC B1B01-81: Key Transponder - Invalid serial data received >> Action

DTC B1B01-81: Key Transponder - Invalid serial data received: Action

NOTE: To validate the repair firstly remove the battery from the Smart key and check that the vehicle can be started through the back-up start procedure (holding the Smart key next to the immobilizer antenna unit and operating the stop start switch)
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