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DTC P0604: Internal Control Module Random Access Memory (RAM) Error: Procedure

CHECK WHETHER DTC OUTPUT RECURS (P0604)

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Code.

Read the DTCs.

RESULT

Result	Proceed to
P0604 is output	A
No DTC is output	B

B → See step 2

A → See step 3

CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS
REPLACE ECM. Refer to REMOVAL