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DTC Chart: HVAC Module

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods

DTC Description Action
B101B:9E Defrost Switch: Stuck On GO to Pinpoint Test C 
B162E:01 Max Defrost LED: General Electrical Failure GO to Pinpoint Test C 
B1C83:12 Rear Defog Relay: Circuit Short to Battery GO to Pinpoint Test A 
B1C83:14 Rear Defog Relay: Circuit Short to Ground or Open If the rear window defrost system is inoperative, GO to Pinpoint Test A 
If the rear window defrost is always active, GO to Pinpoint Test B 
All other Diagnostic Trouble Codes (DTCs) - REFER to: Climate Control System
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