This injection ECU (Engine Control Unit) by Magneti Marelli is designed for Peugeot 207 vehicles with the 1.4 16V KFU engine. Ideal for professional workshops and experienced DIY mechanics, this unit is often searched by its product and OEM numbers (6LPC.105, 9665490080, 9654596080, 1940XX, 1940XY). The ECU manages fuel injection timing, ignition advance and various engine sensors to ensure smooth running, optimal fuel consumption and compliance with emissions requirements. Fitting a correct, compatible ECU restores drivability, resolves intermittent starting or stalling issues and clears persistent diagnostic faults related to the engine management system.

Key Benefits

Reliable replacement for faulty or non-responsive engine management computers, supplying correct sensor interpretation, injector and ignition control. Clear identification by product codes makes searching and ordering straightforward for garages and parts departments. Suitable for technicians who perform diagnosis, replacement and, if necessary, coding or cloning operations.

Technical Information

• Manufacturer: Magneti Marelli
• Model: Peugeot 207 1.4 16V (Engine Code KFU)
• Product Codes: IAW 6LPC.105
• Additional Numbers: 9665490080, 9654596080, 1940XX, 1940XY

Function And Typical Symptoms

The ECU controls injection timing, air/fuel mixture, ignition timing maps and sensor data processing (MAF, MAP, crankshaft/camshaft position, temperature sensors, oxygen sensors). Common symptoms of a failing ECU include: engine cranks but does not start, intermittent stalling, misfires, poor fuel economy, irregular idling and persistent fault codes on the diagnostic scanner (check engine light). These symptoms guide technicians toward ECU diagnosis after excluding wiring, sensors and actuator faults.

Installation Recommendation

Replacement should be performed by a qualified mechanic or an experienced DIYer with proper tools. General replacement steps:

• Disconnect the vehicle battery before any work to avoid electrical damage.
• Access the ECU by removing protective covers or trim panels as required for your vehicle version.
• Carefully unplug all wiring harness connectors, noting locking tabs and connector positions.
• Unbolt the ECU from its mounting bracket and install the replacement in reverse order, ensuring secure earth/ground connections.
• After mechanical installation, perform diagnostic checks and, if required, coding or cloning to restore full functionality.

Installation And Coding – Important

– The unit is used and is “paired” with the original vehicle (VIN/PIN/keys).
– Options to put into service:
1) Cloning data from the old unit (EEPROM/Flash) – after cloning the unit is plug and play.
2) Virginization and subsequent initialization/telecoding via DiagBox (or online) + key adaptation.
– Recommended to be carried out by a technician with PSA service equipment (DiagBox/Lexia/PP2000).
– Before disassembly/assembly always disconnect the battery and follow the manufacturer’s procedures to avoid damaging the unit.

Why This Part Commonly Fails

ECUs commonly fail due to moisture ingress, corrosion of connectors, thermal stress from repeated heating and cooling cycles, poor grounding or electrical surges. Faulty wiring, water leaks in the engine bay or damaged connector seals accelerate degradation. In many cases the unit itself is fine but connector pins are corroded or a broken ground causes erratic behaviour—inspect harness and grounds before replacing the ECU.

Practical Tips For Workshops

• Always scan for fault codes and record live data before replacing components; verify sensors and actuators to avoid unnecessary ECU replacement.
• When cloning, keep a secure backup of EEPROM/Flash data and confirm VIN/key alignment after the procedure.
• Use dielectric grease on connector pins and ensure seals are intact to reduce future moisture-related failures.

Compatibility And Part Search

Customers often search by product or OEM numbers: IAW 6LPC.105, 9665490080, 9654596080, 1940XX, 1940XY. Use these codes when ordering to ensure you receive the correct ECU revision for Peugeot 207 1.4 16V KFU applications.

With product codes 9663380880 and 9654596080, this ECU is engineered to manage and control various aspects of your vehicle’s engine operation, including fuel injection and ignition timing. It is an integral part of the engine management system, and over time it may fail due to exposure to heat, vibration, or electrical surges, necessitating replacement.

Replacing the ECU is a straightforward process for skilled mechanics or DIY enthusiasts. Typically, it’s recommended to monitor the unit for warning signs such as engine misfires or decreased fuel efficiency, which may indicate it’s time for a replacement.

Technical Information

• Manufacturer: Magneti Marelli
• Model: IAW 6LPC.105
• Product Codes: 9663380880, 9654596080
• Other Numbers: 1940XX