DTC P0604: Internal Control Module Random Access Memory (Ram) Error: Trouble symptom

Engine does not start.
Engine stall

NOTE: After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) >Basic Diagnostic PROCEDURE .

CHECK DTC .
Using the Subaru Select Monitor or a general scan tool, read the DTC of [Engine]. Ref. to ENGINE (DIAGNOSTICS) >Diagnostic Trouble Code (DTC) .

Is DTC P0604 displayed? (Current malfunction)
- Yes : Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
  NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
- No : Check the appropriate DTC using the "Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) >Diagnostic Trouble Code (DTC) .