DTC P0605: Internal Control Module Read Only Memory (ROM) Error

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DTC P0605: INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERROR

Description:	The PCM ROM has been corrupted.
Possible Causes:	An attempt was made to change the calibration Module programming error Aftermarket performance products Damaged PCM
Diagnostic Aids:	Reprogram the vehicle identification (VID) block. Check for other DTCs or drive symptoms for further action. 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 appropriate Description article, Possible Causes and Diagnostic Aids for the DTC.