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Home >> Ford >> 2013 >> C-Max Energi SEL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Powertrain DTC Charts & Descriptions (Hybrid) >> DTC Diagnosis >> DTC P0604 (Pcm): Internal Control Module Random Access Memory (Ram) Error
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DTC P0604 (Pcm): Internal Control Module Random Access Memory (Ram) Error

DTC P0604 (PCM): INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR

Description:  This DTC sets when the PCM RAM has been corrupted.
Possible Causes: 
  • Module reprogramming
  • Aftermarket performance products
  • Damaged PCM
Diagnostic Aids:  Reprogram or update the calibration. Check for other DTCs or drive symptoms for further action. Make sure to check for aftermarket performance products before installing a new PCM. If it is necessary to install a new PCM, refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming the VID Block for a Replacement PCM.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.
Refer to the appropriate articles related to the description, possible causes and diagnostic aids.