Home » Tony’s Tips » Articles » QSB 5.9 QSC 8.3 (v1.0 Architecture) WIF (Water in Fuel) Sensor LocationQSB 5.9 QSC 8.3 (v1.0 Architecture) WIF (Water in Fuel) Sensor Location QSB 5.9 v1.0 Water in Fuel Sensor Location QSC v1.0 Water in Fuel Sensor Location