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Home >> Dodge and Ram >> 2009 >> Durango Base, 4.7 P, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Powertrain Control Module (Pcm) - Electrical Diagnostics - 545RFE >> DTC Troubleshooting >> P1684-Battery Was Disconnected >> Possible Causes
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Possible Causes

Possible Causes 
BATTERY WAS DISCONNECTED
SCAN TOOL BATTERY DISCONNECT PERFORMED
PCM WAS REPLACED OR DISCONNECTED
QUICK LEARN WAS PERFORMED

Always perform the Pre-Diagnostic Troubleshooting Procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  .