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Home >> Jeep >> 2017 >> Cherokee Overland, 3.2L Eng VIN S, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Transmission Control Module (TCM) - DTCS P1B14-00 To U1477-00 >> DTC Troubleshooting >> U1401-00-Implausible Engine Speed Signal Received

U1401-00-Implausible Engine Speed Signal Received

The COMMUNICATION DIAGNOSTIC PROCEDURE MUST  be performed before replacing any component(s) or module(s). Perform the COMMUNICATION DIAGNOSTIC PROCEDURE. Refer to STANDARD PROCEDURE .