Description
Engine Control Unit BOSCH ME7.4.4 NFU. It is for PEUGEOT 307 1.6 16V NFU 80kW
The Bosch ME7.4.4 engine control unit (ECU) is a direct-fit electronic brain for vehicles equipped with the NFU 1.6 16V engine. This unit controls fuel injection, ignition timing, lambda control and diagnostic functions to ensure reliable running, optimal fuel economy and compliance with emissions. Suitable for professional workshops and experienced DIY mechanics, the ECU is a high-value replacement when the original unit produces faults such as misfires, limp mode or intermittent starting problems. Searchable by part numbers (e.g. 0261207474 or 9643840680), this unit helps you restore engine performance quickly and accurately.
Technical Information
- Manufacturer: Bosch
- Model: ME7.4.4 NFU
- Product Codes: 0261207474, 9643840680
- Additional Numbers: d00, 1942E4, 1940V8, NFP
- Intended Vehicle Example: Peugeot 307 1.6 16V NFU 80kW
How The Unit Works And What It Controls
The ECU manages injection timing, ignition advance, fuel trim, intake air adaptation and OBD diagnostics by reading sensors (MAF, MAP, crankshaft and camshaft position, lambda) and commanding actuators (injectors, ignition coils, idle control). Proper function is essential for start-up, drivability, emissions and fuel consumption.
How To Replace On The Car
General replacement steps for experienced mechanics or DIYers with electrical skills:
- Disconnect the negative battery terminal before any work to avoid short circuits and damage to the ECU.
- Locate the ECU (refer to the vehicle service manual for exact position). Remove protective covers and secure fasteners to access the unit.
- Carefully release electrical connectors—label or photograph connectors to ensure correct reassembly.
- Remove mounting screws and extract the ECU. Fit the replacement unit, secure it, reconnect connectors and reinstall covers.
- After mechanical installation, the unit will usually require cloning or initialization/coding to match the vehicle (see Installation And Coding – Important below).
- Re-connect the battery only after the ECU is correctly installed and all connectors are confirmed secure.
Installation And Coding – Important
- The Unit Is Used And Is “Paired” With The Original Vehicle (VIN/PIN/Keys).
- Options To Enable:
- 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) + Key Adaptation.
- Recommended To Be Performed By A Specialist With PSA Service Equipment (DiagBox/Lexia/PP2000).
- Always Disconnect The Battery Before Removal/Installation And Follow Manufacturer Procedures To Avoid Damaging The Unit.
Why This Part Most Commonly Fails
- Moisture Ingress And Corrosion: Water or condensation can cause connector corrosion and PCB faults.
- Thermal Stress And Vibration: Repeated heating/cooling cycles and engine vibrations can lead to solder joint cracks or component fatigue.
- Electrical Surges Or Poor Grounding: Voltage spikes, jump-start incidents or bad earth connections may damage electronic components.
- Connector And Wiring Issues: Faulty pins, loose plugs or damaged harnesses often produce intermittent faults attributed to the ECU.
- Symptoms Of Failure: Engine Misfire, Hard Starting, Stalling, Limp Mode, Erratic Idle, Or Persistent Fault Codes In The Engine Management System.
Recommendations For Installation
- Verify Part Numbers Match The Unit You Remove (see Product Codes and Additional Numbers).
- Handle The ECU By Its Housing, Avoid Touching Connector Pins And PCB Areas; Use Anti-Static Precautions Where Possible.
- Perform Cloning Or Coding With Proper Tools; If You Lack PSA Diagnostic Equipment, Arrange For A Workshop With The Necessary Tools To Finalize Commissioning.
- After Installation, Clear Fault Codes And Run A Drive Cycle To Confirm Correct Operation.
Notes
This listing references the OEM Bosch ME7.4.4 unit intended for vehicles using the NFU engine (example: Peugeot 307 1.6 16V NFU 80kW). Confirm the numbers printed on your original ECU match the Product Codes and Additional Numbers listed above before proceeding with replacement.
