DTC P0604-00: Internal Control Module Random Access Memory (RAM) Error: Contents

DTC No.	Detection Item	DTC Detection Condition	Warning Indicate	Memory	Fail-safe Operation	Note
P060400	Internal Control Module Random Access Memory (RAM) Error	ECM RAM error	Check engine light: ON Master warning light: OFF Charging system warning light: OFF Engine oil warning light: OFF Wrench warning indicator light: OFF	DTC stored	Applicable	Drive cycle: 1 Monitor item: CCM Self test type: CMDTC self test, KOEO self test, KOER self test

DTC P060400	ECM RAM error
DETECTION CONDITION	ECM internal RAM malfunction. Diagnostic support note This is a continuous monitor (CCM). The check engine light illuminates if the ECM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA (Mode 02)/Snapshot data is available. DTC is stored in the ECM 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).
TROUBLE AREA	ECM connector or terminals malfunction ECM malfunction ECM internal RAM malfunction
SYSTEM WIRING DIAGRAM	Not applicable