Pressure Sensor – Audi A3 S3 Q3 TT DQ250 S-tronic

This sensor is used in the Audi S-tronic DQ250 transmission to measure hydraulic pressure at the clutches; two are installed per gearbox. It sends real-time pressure data to the transmission control unit to ensure smooth gear shifts and optimal clutch operation. If the sensor is faulty, symptoms may include harsh or delayed shifting, gear slipping, warning lights, stored fault codes, or activation of limp mode.