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Home >> Jeep >> 2009 >> Wrangler X, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> P1684-Battery Was Disconnected >> Possible Causes

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, Transmission Control (TCM) - Standard Procedure  . 

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