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Home >> Dodge and Ram >> 2015 >> Durango SXT, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 146 (DTC P0219-00 To P1D94-00 - 8HP45/845RE Automatic Transmission) >> DTC Troubleshooting >> P1731-00-Incorrect Gear Engaged >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.

The Transmission Control Module (TCM) constantly calculates the transmission ratio based on the Input Speed Sensor signal and Output Shaft Speed signal. This diagnostic will detect if the transmission is trying to mechanically shift into a different gear than what the TCM commanded.

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