2037560 · VGT actuator 2037560
Electric VGT actuator used with Holset HE400VG and HE500VG turbochargers on DAF MX Euro 6 engines. It is often blamed for boost faults, but the source reports stress that the turbo vane mechanism must be checked first.
Defect symptoms
- Truck in limp mode with RPM capped around 1300
- No boost until the engine is well past 1200 rpm
- Turbo hunts or surges instead of building boost smoothly
- Actuator clicks but vane lever barely moves
- Intermittent limp mode after hot restart