Description
Fuel Pressure Sensor Sensor Senzor For Citroën Peugeot 1.4 HDi 1.6 HDi. High-Pressure Sensor On The Fuel Rail. Used Part With Functional Warranty.
This high-pressure fuel rail sensor is a direct-fit replacement for many Citroën and Peugeot common-rail diesel engines. It measures rail fuel pressure and sends the signal to the engine control unit (ECU) so injection timing and quantity can be accurately controlled. Correct rail pressure feedback is essential for stable idling, emission control and fuel economy — replacing a faulty sensor often restores lost power, rough running or hard starting.
The unit is frequently searched for by part numbers listed below and is aimed at professional mechanics and competent DIYers who service 1.4 HDi and 1.6 HDi engines. Installation is straightforward for anyone familiar with fuel-rail work: relieve fuel pressure, isolate the battery, unplug the electrical connector, remove the retaining fastener and extract the sensor from the rail. Fit a new sealing O-ring, tighten to the manufacturer specification, reconnect the connector, prime the fuel system and clear any stored fault codes. After fitting, always check for fuel leaks and proper engine response.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Vehicles Equipped With 1.4 HDi And 1.6 HDi Engines (Common-Rail)
- Product Codes: 96554465480, 9653981180
- Additional Numbers: 1570G2, 1920TL, 1920GW, 1570N5, 5WS40039
Installation Recommendation
- Relieve Fuel System Pressure Before Starting Work.
- Disconnect Battery Negative To Avoid Electrical Shorts.
- Use A New O-Ring/Seal When Installing The Sensor To Prevent Leaks.
- Tighten The Sensor To Manufacturer Torque Specifications; Do Not Over-Tighten.
- Prime The Fuel System After Installation And Clear Any Diagnostic Trouble Codes With An OBD Scanner.
- Inspect Wiring And Connector For Corrosion Or Damage; Replace If Necessary.
Why This Part Fails Most Often
Rail pressure sensors commonly fail due to contamination from debris or degraded fuel, corrosion of the electrical connector, internal electronics aging, or mechanical damage during service. Faults often appear as fluctuating fuel pressure readings, engine limp mode, hard starting or increased smoke. Long-term exposure to poor fuel quality and moisture accelerates failure.
