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Home >> Jaguar >> 2020 >> XF Checkered Flag >> Repair and Diagnosis >> External Pages >> Different car >> Section 81 (Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) -- XE (X760)) >> Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) >> Description And Operation >> Automatic Temperature Control Module (ATCM) >> DTC B12B9-49: Auxiliary Heater Control Module - Internal electronic failure >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
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