Description
Fuel pressure sensor CITROËN PEUGEOT 1.4 HDi 1.6 HDi. High-pressure sensor on the common rail. Used part with functional warranty.
High-quality fuel rail pressure sensor designed for PSA Group diesel engines. This sensor monitors the high-pressure fuel in the common rail and provides the engine control unit with the precise pressure signal required for correct fuel metering and injector timing. A faulty sensor can cause poor idle, loss of power, difficult starting, increased fuel consumption and diagnostic fault codes related to the fuel rail pressure circuit.
Key Benefits
- Direct replacement for original PSA part numbers — straightforward fit on common-rail 1.4 HDi and 1.6 HDi engines.
- Restores correct fuel pressure feedback for smoother running and more accurate injection timing.
- Saves diagnostic time for workshops and DIY mechanics by matching OEM electrical connector and thread type.
Compatibility And Typical Applications
Fits vehicles equipped with PSA 1.4 HDi and 1.6 HDi common-rail diesel engines. Commonly fitted to a range of Citroën and Peugeot models such as compact cars and small MPVs/utility vans that use these engines (examples: Citroën C2/C3/C4/Berlingo, Peugeot 206/207/307/308/Partner). Always verify engine type and part number before ordering.
Installation Recommendation
- Relieve fuel system pressure before starting work (follow manufacturer procedure).
- Disconnect the negative battery terminal to avoid electrical shorts while handling the connector.
- Locate the sensor on the high-pressure common rail, unplug the electrical connector and unscrew the sensor using the correct socket.
- Always install a new sealing washer/olive where applicable and tighten the sensor to the manufacturer’s torque specification.
- After installation, prime the fuel system and check for leaks and correct operation. Clear any stored fault codes and perform a road test to confirm proper function.
Most Common Failure Causes
- Contamination and debris in the fuel (clogged or damaged sensor diaphragm or sealing surfaces).
- Electrical connector corrosion or wiring damage causing intermittent or lost signal to the ECU.
- Mechanical damage during removal/installation or due to vibration and age.
- Seal deterioration causing fuel leakage or pressure loss on the rail.
- Occasionally failure after injector or high-pressure pump faults that create abnormal pressure spikes.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: 1.4 HDi, 1.6 HDi (Common-Rail Diesel Engines)
- Product Codes: 1920GW, 1570N5, 5WS40039, 9653981180
- Other Numbers: 1570N5, 1920GW, 5WS40039, 9653981180
If diagnostic trouble codes are present, look for codes related to fuel rail pressure sensor/circuit which typically indicate signal error or circuit fault. Replacement of the sensor often resolves pressure-related drivability issues, but verify the high-pressure pump and injectors are within specification if pressure faults persist.
