DTC P0605 Internal Control Module Read Only Memory (ROM) Error: General Description
WARNING: This page is about a different car, the 2007 Kia Spectra5 and 2007 Kia Spectra. However, it is still accessible from the selected car via links, so may be relevant.
A malfunction is detected by using a checksum technique for verifying data. The digital data is composed of zeros and ones. A checksum is the total of all ones in a string of data. By comparing the checksum value with a stored value, a malfunction can be detected.