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P1639 - Vehicle Id (VID) Block Corrupted, Not Programmed

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P1639 - VEHICLE ID (VID) BLOCK CORRUPTED, NOT PROGRAMMED

Description:  This DTC sets when the VID block is not programmed or the information within is corrupt.
Possible Causes: 
  • New PCM
  • Incorrect PCM
  • Incorrect VID configuration
Diagnostic Aids:  Program the PCM to the most recent calibration available.
The VID block must be programmed. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Making Changes to the VID Block.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.
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