Description
Control unit Magneti Marelli for FAP diesel particulate filter injection for Citroën and Peugeot vehicles.
Product Overview
This Magneti Marelli ECU (FAP/Dpf Control Unit) manages the dosing and control functions related to the diesel particulate filter system on selected Citroën and Peugeot models. It is commonly searched by part numbers such as 9647428280 and related references, and is intended for professional workshops and experienced DIY mechanics who perform DPF system repairs or replacements. The unit oversees regeneration commands, additive injector control (where applicable), and communicates with the engine management system to ensure correct soot reduction and regeneration cycles.
Technical Information
- Manufacturer: Magneti Marelli
- Model: EAS300.01
- Product Codes: 9647428280
- Additional Numbers: 9647428280-01, 09733309901, 1525CY
Compatibility
Typical Applications: Citroën C5, Peugeot 307. Always confirm the part number against the vehicle’s existing ECU label to ensure fitment.
Replacement Procedure (Practical Guide)
Replacing this ECU is a task for mechanically competent persons or a workshop. Typical steps:
- Disconnect The Battery Before Any Work To Prevent Electrical Damage.
- Locate The Unit—Often Positioned Near The DPF Or In The Engine Bay Depending On Model.
- Carefully Release Electrical Connectors; Avoid Pulling On Wiring.
- Remove Mounting Fasteners And Extract The Unit.
- Install The Replacement Unit, Secure Fasteners, And Reconnect All Plugs With Correct Seating.
- Reattach The Battery And Proceed With Required Coding/Initialization Steps (See Installation And Coding – Important).
Installation And Coding – Important
- The Unit Is Used And May Be Paired With The Original Vehicle (VIN/PIN/Keys).
- Commissioning Options:
- Cloning Data From The Old Unit (EEPROM/Flash) – After Cloning The Unit Is Plug And Play.
- Virginization And Subsequent Initialization/Telecoding Via DiagBox (Or Online) Plus Key Adaptation.
- It Is Recommended That These Operations Are Carried Out By A Specialist With PSA Service Equipment (DiagBox/Lexia/PP2000).
- Always Disconnect The Battery Before Removal/Installation And Follow Manufacturer Procedures To Avoid Damage To The Unit.
Installation Recommendations
- Work In A Clean, Dry Environment To Prevent Contamination Of Connectors Or The Unit Housing.
- Use Proper Tools And Torque Settings For Fasteners; Avoid Over-Tightening.
- Protect The Unit From Static Electricity; Ground Yourself When Handling Electronic Components.
- After Installation, Verify Electrical Connections And Run A Diagnostic Scan To Confirm Communication With The Engine Control Module.
- If Cloning Is Used, Verify That All EEPROM/Flash Sections Were Copied Correctly And That DPF Related Sensors Report Normal Values.
Why This Part Fails Most Often
- Corrosion And Water Ingress Causing Connector Or Board Failures.
- Thermal Stress Due To High Exhaust Temperatures Or Poor Mounting Conditions.
- Electrical Disturbances Such As Voltage Spikes From Faulty Charging Systems.
- Mechanical Damage To Pins Or Wiring During Previous Repairs.
- Failures Triggered By Underlying DPF Problems (Clogged Filter, Faulty Sensors) That Place Extra Load On The Control Unit.
Notes For Mechanics And DIY Enthusiasts
Searches For This Part Often Use The Following References: 9647428280, 9647428280-01, 09733309901, 1525CY. Because this ECU participates in safety-critical control and regeneration functions, correct commissioning is essential for reliable operation and to avoid drivability faults or DPF regeneration issues.
