FixVault

DTC P064F - Unauthorized Software/Calibration Detected

DTC DESCRIPTION P064F - UNAUTHORIZED SOFTWARE/CALIBRATION DETECTED

Description:  This DTC sets when the PCM has detected an unauthorized calibration.
Possible Causes: 
  • Aftermarket accessories and performance modifications
  • PCM programming error
Diagnostic Aids:  Reprogram or update the calibration. Reprogram the vehicle identification (VID) block (use as built data). Check for other DTCs or drive symptoms for further action. Check for aftermarket performance products. If it is necessary to install a new PCM, refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.