DTC P0604-44: Internal Control Module Random Access Memory (RAM) Error Data Memory Failure [08/2023 - ]: Procedure

Pre-procedure1

• None.

• Clear the DTCs.

  Powertrain > Engine > Clear DTCs 

  Result

  Proceed to
  NEXT

Post-procedure1

• Turn the ignition switch off.

Result: 

NEXT 

See step  2

Pre-procedure1

• Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 1 minute.
• Connect the cable to the negative (-) auxiliary battery terminal.
• Wait 16 seconds or more.

• Read the DTCs.

  Powertrain > Engine > Trouble Codes 

  Result

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

Post-procedure1

• None.

Result: 

A 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [10/2022 - ] 

Result: 

B 

REPLACE ECM. Refer to  REMOVAL [08/2023 - ]