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Home >> Land Rover >> 2013 >> LR2 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 134 (Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) -- XF/X260) >> Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) >> Description And Operation >> Automatic Temperature Control Module (ATCM) >> DTC B12B2-13: AUX Heater Coolant Diverter Valve - Circuit open >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2018 Jaguar XF, 2017 Jaguar XF, and 2016 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Circuit reference - FB HEATER DIV VLV -
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