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Home >> Porsche >> 2017 >> Macan Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 673 (Diagnostic Trouble Code Index DTC: HVAC Control Module (HVAC) -- Discovery/L462) >> Diagnostic Trouble Code Index DTC: HVAC Control Module (HVAC) >> Description And Operation >> DTC B13F4-13: Electric (PTC) Heater Control Circuit #1 - Circuit open >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2018 Land Rover Discovery and 2017 Land Rover Discovery. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Circuit reference - PTC RLY 1 CTRL -
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