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Home >> Jeep >> 2019 >> Renegade High Altitude, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1365 ((Electronic Shift Module (ESM) - Electrical Diagnostics)) >> DTC Troubleshooting >> U0100-00-Lost Communication With ECM/Pcm "A"

U0100-00-Lost Communication With ECM/Pcm "A"

WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

The Scan Tool may display the description name of this Diagnostic Trouble Code differently with the following below:

U0100-00-LOST COMMUNICATION WITH ENGINE CONTROL MODULE (ECM) / POWERTRAIN CONTROL MODULE (PCM)

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

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