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P264F - Engine Serial Number Not Programmed Or Incompatible - DTC Chart

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P264F - ENGINE SERIAL NUMBER NOT PROGRAMMED OR INCOMPATIBLE - DTC CHART

Description:  This DTC sets when the PCM does not receive a valid engine serial number during reprogramming.
Possible Causes: 
  • Engine serial number corrupted during vehicle identification (VID) reprogramming
  • PCM replacement
  • Damaged PCM
Diagnostic Aids:  The VID block must be programmed. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming VID Block. If the PCM does not allow reprogramming of the VID block, reflashing of the PCM is required.
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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