Code No. P0605: Read Only Memory (FLASH ROM) Malfunction

FUNCTION

• The engine-ECU reads information from flash ROM.
  
• The engine-ECU detects checksum errors.
  

TROUBLE JUDGMENT

• Ignition switch is in "ON" position.
  

• In each inspection target area of a flash ROM, a checksum mismatch is detected three times consecutively.
  

FAIL-SAFE AND BACKUP FUNCTION

• The rail pressure is controlled in the range between 50 and 100 MPa.
  
• The fuel injection amount is restricted (Output restriction).
  
• The open angle of the accelerator pedal is restricted.
  
• The throttle valve is closed (Fixed opening degree).
  
• The EGR control is stopped (fully closed).
  
• The DPF regeneration is prohibited.
  
• The AS&G control is prohibited.
  

PROBABLE CAUSE

• Failed engine-ECU
  

	Replace the engine-ECU.

	Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).