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

DTC detecting condition: 

Immediately at fault recognition

Trouble symptom: 

• Engine does not start.
• Engine stalls.
  CAUTION: After servicing or replacing faulty parts, perform Clear Memory Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Clear Memory Mode>OPERATION . and Inspection Mode Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Inspection Mode>PROCEDURE .
  1. CHECK FOR ANY OTHER DTC ON DISPLAY. 

     Is any other DTC displayed?

     • Yes: Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>List of Diagnostic Trouble Code (DTC) .
     • No: 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.