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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1650 ((External Audio/Video Module - Electrical Diagnostics - 2500 Hd)) >> DTC Troubleshooting >> B21A1-00-Ecu Reset/Recovery Occurred >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
MODULE WAS RE-FLASHED
MODULE WAS RESET

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

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