DTC P0604-44: Internal Control Module Random Access Memory (RAM) Error Data Memory Failure [12/2023 - ]: Procedure

Pre-procedure1

1. None

   Procedure1

2. Clear the DTCs.

   Powertrain > Engine > Clear DTCs 

   Result

   Proceed to
   NEXT

   Post-procedure1

3. Turn the ignition switch off.

Result: 

NEXT 

See step  2

Pre-procedure1

1. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
2. Connect the cable to the negative (-) battery terminal.
3. Turn the ignition switch to ON.
4. Wait 16 seconds or more.

   Procedure1

5. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   P0604-44 is output	B

   Post-procedure1

6. None

Result: 

A 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2023 - ] 

Result: 

B 

REPLACE ECM. Refer to  REMOVAL [12/2023 - ]