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

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0604)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Read the DTCs.

Result

Display (DTC Output)	Proceed to
P0604	A
No 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