Description
Fuel Pressure Sensor (Sensor) For CITROËN PEUGEOT 1.4 HDi, 1.6 HDi And 2.0 HDi
High-Pressure Sensor On The Fuel Rail
Used Part With Functional Warranty
This fuel rail pressure sensor is a reliable replacement option for diesel HDi engines from the PSA/Stellantis group. Designed to monitor high fuel pressure directly on the common rail, the sensor provides the engine management unit with real-time data used to regulate injection timing and quantity. Perfect for professional garages and DIY mechanics who search by OE code (e.g. 9664111780 or 1920TL), this part helps restore correct rail pressure readings and engine performance.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Vehicles With 1.4 HDi, 1.6 HDi And 2.0 HDi Engines
- Product Codes: 9664111780
- Other Numbers: 1920TL
Compatibility Notes
Commonly Found On Various Citroën And Peugeot Models Equipped With HDi Engines (Examples: Citroën C3, C4, Berlingo; Peugeot 207, 307, 308, Partner). Always confirm the OE code or item number when searching to ensure correct fitment.
Installation Recommendations
- Work In A Well-Ventilated Area And Observe All Safety Precautions For High-Pressure Fuel Systems.
- Before Removal, Relieve Fuel System Pressure According To Manufacturer Procedure To Avoid Injury Or Fuel Spray.
- Disconnect Battery Negative Terminal To Prevent Electrical Shorting When Unplugging The Sensor Connector.
- Unplug Electrical Connector From The Sensor, Clean The Surrounding Area To Prevent Contamination, Then Unscrew The Sensor From The Fuel Rail Using The Correct Socket.
- Install New Sensor Carefully; Use Manufacturer-Approved Seals Or Thread Sealant If Required And Tighten To Manufacturer Torque Specification.
- After Installation, Crank The Engine To Prime The Fuel System And Check For Leaks. Clear Any Fault Codes And Verify Proper Rail Pressure Readings With Diagnostic Equipment.
Why This Part Commonly Fails
Rail pressure sensors are exposed to extreme pressures, temperature fluctuations, and contaminated fuel. Common Failure Causes Include:
- Contamination From Particulate Matter Or Water In The Fuel Causing Sensor Drift Or Shorts.
- Electrical Connector Corrosion Or Damaged Wiring Leading To Intermittent Signals.
- Mechanical Damage During Engine Work Or Impact.
- Age-Related Wear And Internal Sensor Degradation Affecting Accuracy.
Replacement Typically Restores Accurate Fuel Pressure Readings, Eliminates Related Misfires Or Limp-Home Modes, And Helps Reestablish Proper Injection Control.
