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Home >> Jeep >> 2025 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 (2.0L - DTCS P0688 To P0A16) >> DTC Troubleshooting >> P0850-Park/Neutral Switch Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2025 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
TRANSMISSION RANGE SENSOR (TRS) WIRING ISSUES
COMMUNICATION FAILURE BETWEEN THE PCM AND THE TCM
TRANSMISSION CONTROL MODULE (TCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to:  2.0L - PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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