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Home >> Jeep >> 2009 >> Commander Overland, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 119 (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> U1505-Implausible Message Data Length Received From FDCM >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2009 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
FCM CAN BUS DTCS PRESENT
FINAL DRIVE CONTROL MODULE DTCS PRESENT
TRANSMISSION CONTROL MODULE

Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure  

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