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Home >> Chrysler >> 2025 >> Pacifica Plug-In Hybrid Select >> Repair and Diagnosis >> External Pages >> Different car >> Section 150 ((Electronic Shift Module (ESM) - Electrical Diagnostics)) >> DTC Troubleshooting >> P0955-00 Auto Shift Manual Mode Circuit ERS Switch >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2025 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.

The Electronic Shift Module (ESM) monitors the internal Auto Shift Manual Mode circuit for electrical failures. If an open circuit, short to ground, or a short to voltage is detected on one of the hall TIP sensors a DTC will set.