2. Diagnosis & Intervention Protocol à Bordeaux
An illuminated check engine light, a car grazing at low revs, thick black smoke when accelerating, and the P0400 fault code are typical signs of an EGR valve stuck open.
3. Management and Technical Solutions
Treatment involves high pressure chemical cleaning or descaling. If the valve is dead, our experts can carry out an electronic deletion (EGR OFF) via the engine computer.
4. Prevention and Maintenance in Bordeaux
Short, cold urban journeys are deadly for the EGR. It is recommended to drive at high engine speed (3000 rpm) for 20 minutes every month to burn off the carbon.