DTC P0602: Pcm Internal Malfunction: Description

Powertrain Control Module (PCM) utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). EEPROM contains program information and calibrations required for powertrain diagnostics operation. Unlike the Programmable Read Only Memory (PROM) used for past applications, the EEPROM is not replaceable. When PCM is replaced or a calibration update is required, PCM must be programmed using approved Techline equipment.