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Home >> Jeep >> 2025 >> Grand Cherokee L Summit >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> (Electronic Shift Module (ESM) - Electrical Diagnostics) >> DTC Troubleshooting >> P1DF3-00 Ecu Not Initialized >> Possible Causes

Possible Causes

Possible Causes
TRANSMISSION CONTROL MODULE (TCM) SOFTWARE
ELECTRONIC SHIFT MODULE (ESM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to:  8P75PH PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  or  8HP50/850RE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .

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