Hi my 2001 Galaxy 1.9tdi ANU engine code (wastegate turbo not VNT)has intermitant loss of power limp mode turn of back on and away you go . fault code 17964 Charge pressure control negative deviation. I have checked all vacuum pipes for leaks replaced all solenoid valves N75 etc the MAP sensor MAF still no joy has anyone had a similar fault? HELP at wits end :rolleyes: