Overview

The OMRON 240107 fuel pump relay is a direct replacement relay commonly used on a range of Stellantis Citroën and Peugeot models. It controls power supply to the electric fuel pump, enabling correct fuel delivery during ignition and engine operation. This used part is supplied with a guarantee of functionality and is often searched for by its product numbers (240107, 19203N, 454935).

Compatibility

• Citroën C2
• Citroën C3
• Citroën C3 Pluriel
• Citroën C4
• Peugeot 207
• Peugeot 307

How It Works

The fuel pump relay supplies switched battery voltage to the fuel pump when the ignition is turned to ON and when the engine management unit requests pump operation. It isolates the high current draw of the pump from the vehicle’s ignition switch and provides a controlled on/off function. A faulty relay disrupts pump power and can lead to no-start, intermittent stalling, or loss of fuel pressure.

Replacement Procedure

Typical replacement steps for a mechanic or competent DIYer:

• Always Disconnect The Battery Before Starting Work To Prevent Short Circuits Or Damage.
• Locate The Relay—Usually Found In The Engine Bay Fuse/Relay Box Or In A Relay Block Under The Dashboard Depending On Model.
• Remove The Old Relay By Pulling Straight Out From Its Socket. Inspect The Socket And Wiring For Corrosion Or Heat Damage.
• Compare Part Numbers And Pinout Before Installing The Replacement Relay.
• Fit The New Relay, Reconnect Battery, Turn Ignition To ON And Listen For Fuel Pump Operation. Verify Fuel Pressure And Engine Start/Idle.
• Check Associated Fuses And Wiring If The Pump Does Not Activate After Relay Replacement.

Common Failure Reasons

• Contact Wear And Pitting From High Current Switching Over Time.
• Overheating Due To Poor Electrical Connections Or High Ambient Temperatures.
• Corrosion Or Moisture In The Relay Housing Or Socket Leading To Intermittent Contacts.
• Electrical Surges Or Faulty Fuel Pump Causing Excessive Load On The Relay.

Installation Recommendations

• Use The Correct OEM Or Equivalent Relay With Matching Pinout And Ratings.
• Inspect And Clean The Relay Socket And Connectors; Replace Damaged Wiring Or Terminals.
• Apply A Small Amount Of Dielectric Grease On Exposed Connectors To Reduce Corrosion Risk.
• After Installation, Confirm Fuel Pump Activation And Stable Fuel Pressure Before Road Testing.
• If Problems Persist, Test The Relay On A Bench Or Substitute With A Known Good Relay To Isolate The Fault.

Technical Information

• Manufacturer: Omron
• Model: OMRON 240107
• Product Codes: 240107
• Additional Numbers: 19203N, 454935

Notes For Buyers

This listing is for a used OMRON 240107 fuel relay supplied with a guarantee of functionality. Because this part is commonly searched by reference numbers, verify the code stamped on your existing relay to ensure a direct match. Replacing a failing relay is a cost-effective repair for no-start or intermittent fuel delivery symptoms and is straightforward for an experienced mechanic or a competent DIY enthusiast.

Product Overview

Compact, reliable fuel pump relay from OMRON designed for a range of Citroën and Peugeot models. This unit switches power to the fuel pump and is supplied with a short length of wiring for easier replacement or repair of damaged connector leads. Ideal for professional workshops and competent DIY mechanics who need a direct-fit electrical relay that restores fuel system power without extensive modifications.

Key Benefits

• Direct replacement for common Stellantis applications—works with several Citroën and Peugeot models.
• Supplied with wiring stub to repair damaged connectors or to adapt the relay to the existing harness quickly.
• Easy plug-in exchange reduces vehicle downtime and labor costs.
• Trusted OMRON quality for electrical switching reliability in automotive environments.

Applications

Commonly used in the following models (verify compatibility by matching part numbers): Citroën Berlingo, Citroën C3 Pluriel, Citroën C4, Citroën Xsara Picasso, Peugeot 206+, Peugeot 307, Peugeot 308, Peugeot Partner.

Installation

Before working on any electrical component disconnect the negative battery terminal to avoid short circuits. Locate the fuel pump relay in the vehicle’s fuse/relay box (engine bay or under-dash depending on model) or near the fuel pump circuit. Remove the old relay by pulling it straight from the socket or releasing any retaining clips. Compare pin layout and part numbers, then plug the new OMRON relay into the socket. If using the supplied wiring piece, splice or crimp connections securely, protect joints with heat-shrink or proper insulation, and ensure correct routing away from heat sources and moving parts. Reconnect the battery and perform a function test: turn the ignition to the ON position and listen for the fuel pump prime and check for correct engine start.

Technical Information

• Manufacturer: OMRON
• Model: Citroën, Peugeot Applications
• Product Codes: 240107, 19203N, 454935
• Other Numbers: 1920.3N, 19203N, 454935

Recommended For Installation

Use quality crimp connectors or soldered joints covered by heat-shrink tubing when joining the supplied wiring to the vehicle harness. Verify pin alignment before powering the circuit. If the vehicle exhibits intermittent electrical faults, check the mating connector for corrosion or loose terminals and replace the connector if necessary. Torque any related fuse/relay box fasteners to manufacturer specifications and secure wiring away from high-temperature areas.

Why This Part Fails Most Often

Fuel relays typically fail due to worn internal contacts from repeated switching, overheating in high-current circuits, corrosion or moisture ingress in the connector, and vibration-induced fatigue. Short circuits or a failing fuel pump that draws excessive current can also overload the relay and shorten its service life. Regular inspection of the connector and harness, and addressing any fuel pump issues early, will extend relay life.

Suitable For Professionals And Experienced DIYers

This OMRON fuel relay is a practical replacement part for workshops and skilled do-it-yourselfers. Because it comes with a length of wiring, it is particularly useful when original connector leads are damaged or when a quick harness repair is needed during roadside or in-shop repairs. Always follow vehicle manufacturer guidelines when performing electrical repairs.