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Home >> Porsche >> 2017 >> Macan GTS >> Repair and Diagnosis >> External Pages >> Different car >> Section 447 (Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) -- Range Rover/L405) >> Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) >> Description And Operation >> DTC B1D34-66: Heater In Lock Out Mode - Signal has too many transitions/events >> Possible Causes

Possible Causes

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 Land Rover Range Rover, 2017 Land Rover Range Rover, 2016 Land Rover Range Rover, 2015 Land Rover Range Rover, and 2014 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.
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