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Home >> Jeep >> 2021 >> Grand Cherokee L Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 24 (8HP75 Automatic Transmission - DTCS P0219-00 To P1D78-00) >> Diagnosis And Testing >> P1778-00: Input-Turbine Shaft Speed Sensor "A" Out Of Range High >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
TRANSMISSION INTERNAL FAILURE
TRANSMISSION CONTROL MODULE (TCM)

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

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