its a new one on me that one... doesn't say its active, have you tried clearing it and seeing if it comes back?? If it clears and doesn't return i wouldn't worry about it myself
Internal Control Module Read Only Memory (ROM) Error
What does this mean?
OBD Code P0605refers to
The ECM/PCM consists of a microcomputer and connectors for signal input and output and for power supply. The ECM/PCM controls the engine.
Symptoms
Possible sumptoms of OBD code P0605
- ECM/PCM calculation function is malfunctioning. - ECM/PCM memory system is malfunctioning. - ECM/PCM self shut-off function is malfunctioning
Causes
Possible causes of OBD code P0605
- ECM/PCM Harness power supply circuit is open or shorted - ECM/PCM Harness ground supply circuit is open or shorted - ECM/PCM may be faulty The Error code is generally activated on detection of the following conditions: Engine Light ON (or Service Engine Soon Warning Light)