DTC P0604-00: Pcm Ram Error: Notes

DTC P0604:00	PCM RAM error
DETECTION CONDITION	PCM internal RAM malfunction. Diagnostic support note This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Restricts the upper limit of the engine speed. Stops the drive-by-wire control (throttle valve is open at approx. 8 ° by return spring force).
POSSIBLE CAUSE	PCM connector or terminals malfunction PCM malfunction PCM internal RAM malfunction
System Wiring Diagram	Not applicable