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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 >> P0734-Gear Ratio Error In 4TH >> 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 
LOW TRANSMISSION FLUID
OTHER TRANSMISSION DTCS PRESENT
INTERNAL TRANSMISSION FAILURE

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

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