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

WARNING: This page is about a different car, the 2010 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.

CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0604)

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

Read the DTCs.

Result

Display (DTC output)	Proceed to
P0604	A
No output DTC	B

B → END

A → See step 2

REPLACE ECM. Refer to REMOVAL