LEMON Manuals
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Land Rover
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2017
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Range Rover Evoque Autobiography
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Repair and Diagnosis
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General Information
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DTC Index
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Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) -- Range Rover EVOQUE/L538
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Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM)
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Description And Operation
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DTC B12B9-4B: Auxiliary Heater Control Module - Over temperature
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Possible Causes
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Possible Causes
Fuel fired booster heater overheated
Fuel fired booster heater internal failure