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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 100 (6.7L Diesel - DTCS - P21C4 To U1601 - 3500 Cab & Chassis) >> Diagnosis and Testing >> U1601-Ecu Application Software Code 1 Missing Or Corrupted >> Code Description >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
POWERTRAIN CONTROL MODULE HAS NO SOFTWARE INSTALLED
SOFTWARE DOWNLOAD FAILED DURING THE DOWNLOAD PROCESS
POWERTRAIN CONTROL MODULE HAS UNAPRROVED SOFTWARE INSTALLED

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE - 6.7L  . 

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