1. Key Technical Specifications Working pressure: 0.5~25barA (range can be adjusted) Accuracy: ±1%VCC (25℃~) ±2%VCC (-40 ° C ~+140 ° C) There are also high-precision versions available Operating temperature: -40℃~+140℃ Storage temperature: -40℃~+150℃ Safety pressure: 50bar@1H Burst pressure: 100bar@10min Working medium: transmission oil Service life: three million full range cycles Vibration: 10g (50~2000Hz) Electrical interface: YAZAKI A03FW Protection level: NA Case material: A6061-T6 Pressure connection: M10×1.25-6g Supply voltage: 5.0±0.25VDC Output voltage: 0.5~4.5VDC (adjustable in 5V range) Input current: <10mA Load impedance: 10KΩ (typical) Output response time: ≤10ms(T90) Short circuit protection: Yes 2. Core Function Real-time monitor ATF hydraulic pressure during gear shifting and feed accurate pressure data to TCU continuously. TCU adjusts shift solenoid valve output pressure based on sensor signals to realize smooth, jerk-free gear upshift and downshift. Maintain stable line pressure under different driving loads such as acceleration, climbing and high-speed cruising to protect clutch and friction plates. Built-in self-diagnosis function detects oil pressure abnormality, circuit open/short circuit and oil leakage, triggers gearbox fault warning light and stores DTC fault codes. Support adaptive learning of transmission system, optimize shift logic to extend the service life of transmission components. 3. Working Principle The sensor adopts high-stability piezoresistive measurement principle: Transmission oil pressure acts on the corrosion-resistant metal sensitive diaphragm and produces tiny elastic deformation. Integrated strain resistors on the diaphragm generate resistance changes proportional to oil pressure. Wheatstone bridge circuit converts resistance changes into analog voltage signals. Internal signal amplification, filtering and ADC processing eliminate oil temperature interference, output stable analog or digital signals to TCU. 4. Application Scope Vehicle Types Automatic fuel vehicles, hybrid electric vehicles equipped with AT, DCT, CVT and AMT gearboxes. Equipment Passenger cars, SUVs, MPVs, light commercial vehicles and engineering vehicles with automatic transmission systems. Application Scenarios Daily commuting vehicles, new energy hybrid gearbox hydraulic control, intelligent transmission shift auxiliary system.