This fuel rail pressure sensor is designed for Citroën and Peugeot diesel engines with 1.4 HDi and 1.6 HDi units. It monitors high-pressure fuel in the common rail and sends precise pressure data to the engine control unit (ECU) to regulate injection timing and quantity. Correct rail pressure measurement is critical for smooth idle, responsive acceleration, efficient fuel consumption and low emissions. Commonly Searched Part Numbers: 96554465480, 9653981180, 1570G2, 1570N5, 1920TL, 1920GW, 5WS40039.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Vehicles Equipped With 1.4 HDi And 1.6 HDi Engines (Common Rail)
• Product Codes: 96554465480, 9653981180
• Other Numbers: 1570G2, 1570N5, 1920TL, 1920GW, 5WS40039

Installation Recommendations

• Relieve Fuel System Pressure Before Starting Work To Avoid Fuel Spray.
• Disconnect The Battery And Then Unplug The Electrical Connector From The Sensor.
• Unscrew The Sensor From The High-Pressure Rail Using The Correct Socket Or Wrench; Protect Surrounding Components From Fuel Spillage.
• Inspect The Sensor Port And Replace Any Damaged Seals Or O-Rings; Ensure Clean Sealing Surfaces Before Fitting The New Unit.
• Fit The Replacement Sensor Hand-Tight, Then Secure To Manufacturer Torque If Available; Reconnect The Electrical Connector And Battery.
• Prime The Fuel System By Cranking The Engine Or Using The Fuel Pump Cycle, Then Check For Leaks And Clear Related Fault Codes With A Diagnostic Tool.
• Recommended For Installation By Experienced Technicians Or Skilled DIYers With Basic Diesel-System Knowledge And Proper Tools.

Reason Why Part Fails Most Often

• Contamination From Dirty Fuel Or Debris In The Rail Leading To Sensor Blockage Or Internal Damage.
• Corrosion Or Electrical Connector Issues Causing Intermittent Signal Loss.
• Exposure To Excessive Vibration Or Mechanical Damage During Engine Work.
• High-Pressure Pump Or Injector Faults Causing Abnormal Pressure Spikes That Can Damage The Sensor.
• Symptoms Of Failure Include Engine Warning Lights, Poor Idling, Hesitation Under Load, Hard Starting, Increased Fuel Consumption And Fault Codes Related To Fuel Rail Pressure (E.g. OBD Codes P0190–P0194).

This sensor is ideal for mechanics and DIY enthusiasts who need a direct replacement identified by common OEM numbers. Use The Listed Product Codes When Searching Or Ordering To Ensure Correct Fitment.

This fuel pressure sensor is a direct-fit replacement for many Citroën and Peugeot HDi common-rail engines. It monitors rail pressure and provides real-time data to the engine control unit (ECU) to regulate injector timing and fuel delivery. Ideal for professional mechanics and experienced DIYers who often search by OE number, this unit is commonly referenced under codes such as 9670076780, 9653981180, 1920GW, 1570N5 and 5WS40039.

Faulty fuel pressure sensors typically cause warning lights, rough idling, loss of power, poor fuel economy, hard starting or intermittent limp-home mode. Replacing a failing sensor restores accurate pressure feedback, improves driveability and prevents incorrect fueling that can affect emission control and turbo response.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: 1.6 HDi, 2.0 HDi
• Product Codes: 9670076780, 9653981180
• Additional Numbers: 1920GW, 1570N5, 5WS40039

Installation Recommendation

Before starting, relieve fuel system pressure and work in a well-ventilated area away from open flames. For safety, disconnect the negative battery terminal. Locate the sensor on the common rail, unplug the electrical connector and remove the retaining fastener(s). Carefully withdraw the sensor and replace the sealing washer or O-ring with a new one to ensure a leak-free fit. Fit the replacement sensor, secure it to the rail, reconnect the electrical connector and restore battery power. After installation, prime the fuel system by cranking the engine or activating the fuel pump, check for leaks and clear any stored fault codes with a diagnostic tool if necessary. Use appropriate hand tools and avoid excessive torque on the sensor body—tighten to the manufacturer’s specification where available.

Why This Part Fails Most Often

Common causes of sensor failure include contamination from fuel (particles or water), corrosion of electrical contacts, vibration and thermal cycling, or internal electronics deterioration. Fuel system issues such as a failing fuel filter, contaminated fuel, or pressure spikes from a faulty high-pressure pump can accelerate wear. Regular maintenance of the fuel system and attention to cleanliness during service helps prolong sensor life.

Parts searched by OE number sell quickly — if you need dependable compatibility with Citroën or Peugeot HDi engines and a used part supplied with a functional guarantee, this fuel pressure sensor is a cost-effective solution for garages and skilled DIY mechanics.

This high-pressure rail sensor monitors fuel pressure in the common-rail system and provides the engine control unit (ECU) with real-time data to regulate injection timing and quantity. It is a frequently replaced component on PSA HDi diesel engines when the ECU detects pressure deviations or when drivability issues occur. The sensor is often searched for by its reference numbers, so please check the product codes below when looking for a direct replacement.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Vehicles with 1.4 HDi and 1.6 HDi engines (for example: Citroën C3, C4, Berlingo; Peugeot 206, 207, 307)
• Product Codes: 1920GW, 1570N5
• Other Numbers: 9653981180, 5WS40039

Common Symptoms Of A Faulty Sensor

• Engine Warning Light (ECU Fault Codes Related To Fuel Pressure)
• Rough Idle, Hesitation Or Loss Of Power Under Acceleration
• Hard Starting Or Extended Cranking
• Inconsistent Fuel Consumption Or Black Smoke From Exhaust

Replacement Procedure (Overview)

Recommended for professional workshops or experienced DIY mechanics. Typical replacement steps:

• Relieve Fuel System Pressure Safely Before Work (follow vehicle manufacturer procedure).
• Disconnect The Battery To Prevent Short Circuits During Work.
• Locate The Sensor On The Common-Rail Fuel Rail; Remove Any Engine Covers Or Components Blocking Access.
• Unplug The Electrical Connector And Carefully Unscrew Or Release The Sensor From The Rail (depending on design).
• Fit A New O-Ring Or Sealing Washer If Present, Install The Replacement Sensor And Tighten To Manufacturer Torque Specification.
• Reconnect The Electrical Connector, Reassemble Removed Parts, Reconnect Battery And Start The Engine. Check For Leaks And Clear Any Stored Fault Codes.

Installation Recommendations

• Use Appropriate Tools And Torque Settings — Consult The Vehicle Repair Manual For Exact Values.
• Always Replace Seals Or O-Rings To Ensure Leak-Free Connection.
• Work In A Well-Ventilated Area And Avoid Open Flames Or Sparks When Working With Diesel Fuel.
• Inspect Wiring And Connector Pins For Corrosion Or Damage; Poor Electrical Contact Is A Common Cause Of Intermittent Faults.

Why This Part Most Often Fails

High-pressure rail sensors commonly fail due to contamination from fuel (debris or varnish build-up), exposure to excessive heat and vibration, or electrical connector/wiring deterioration. Mechanical damage during earlier service or a degraded sealing O-ring can also cause pressure reading errors and fuel leaks. Intermittent faults are frequently traced to corroded pins or brittle wiring rather than to the sensor element itself.

Search Keywords: 1920GW, 1570N5, 9653981180, 5WS40039, Fuel Pressure Sensor, Common Rail Sensor, Citroën, Peugeot, 1.4 HDi, 1.6 HDi.

This high-pressure fuel rail sensor measures rail pressure and provides the engine control unit with accurate data for fuel injection control. It is a direct-fit replacement for vehicles equipped with 1.4 HDi and 1.6 HDi common-rail diesel engines and is often sought under part numbers such as 9653981180 or 5WS40039. Designed for professional workshops and experienced DIYers, the sensor helps restore correct fuel pressure readings, smooth idling and proper engine response when the original unit has failed.

Compatibility And Typical Applications

Suitable for many Citroën and Peugeot models fitted with 1.4 HDi and 1.6 HDi engines. Common vehicle examples include Citroën C3, C4, Berlingo and Peugeot 207, 307, 308, Partner. Always match part numbers listed below with your vehicle’s service documentation before installation.

Installation Recommendation

• Depressurize the fuel system before starting the job to avoid fuel spray and safety hazards.
• Disconnect the negative terminal of the battery to prevent electrical short circuits.
• Remove any engine covers and access the common-rail; unplug the electrical connector from the sensor.
• Unscrew the sensor from the fuel rail carefully—retain or replace the sealing washer. Fit the new sensor by hand first and then tighten to the manufacturer’s specified torque.
• Reconnect the electrical connector and battery, then prime the fuel system and check for leaks. Verify correct operation with a diagnostic tool or by monitoring engine behavior after start-up.

Most Common Failure Causes

The sensor typically fails due to contamination of the fuel (dirty diesel or debris), exposure to water or corrosion at the electrical connector, mechanical damage from vibration or impact, or electrical faults in the wiring harness. Failures are often reported after prolonged service life, fuel system repairs, or when a failing high-pressure pump creates abnormal pressure spikes that damage the sensor.

Technical Information

• Manufacturer: Stellantis (Citroën, Peugeot)
• Model: 1.4 HDi, 1.6 HDi (Common-Rail)
• Product Codes: 9653981180
• Other Numbers: 1920GW, 1570N5, 5WS40039

Buy this fuel pressure sensor to restore reliable rail pressure measurement and stable diesel engine performance. Suitable for professional fitment and competent DIY repairs—keep the fuel system clean and replace sealing washers to maximize service life.