From Ross-Tech Wiki

00550 - Start of Injection Regulation

00550 - Start of Injection Regulation: Control Difference

Possible Symptoms

  • Malfunction Indicator Light (MIL) ON
  • Loss of Power
  • Starting Problems
  • Transmission in Emergency Mode

Possible Causes

  • Fuel Tank incorrectly filled with Petrol or Biodiesel
  • Air/Water in Fuel System
  • Injection Timing incorrect
  • Electrical Fuel Pump faulty

Possible Solutions

  • Check Fuel Tank for Petrol and Biodiesel
    • Drain Tank and Fuel System
  • Check Fuel System for Air/Water
  • Check Fuel Supply and Return Lines for Blockage and Leaks
  • Check Electrical Fuel Pump
  • Check/Correct Injection Timing
    • Perform Basic Setting / Use TDI-Graph

Video Link

TDI VE Start of Injection