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Home >> Jeep >> 2021 >> Renegade Islander, FWD >> Repair and Diagnosis >> Transmission >> Transfer Case >> (Drivetrain Control Module (DTCM) - Electrical Diagnostics) >> DTC Troubleshooting >> C2020-48: Ecu Internal Fault - Supervision Software Failure >> Possible Causes

Possible Causes

Possible Causes
DTCM SOFTWARE
DTCM WIRE HARNESS
DTCM

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

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