Description
Engine Control Unit BOSCH ME7.4.4 NFU. For Peugeot 307 1.6 16V NFU 80 kW.
This Bosch ME7.4.4 Engine Control Unit (ECU) is designed for vehicles equipped with the 1.6 16V NFU engine, most commonly found in the Peugeot 307. The unit controls fuel injection, ignition timing, idle management and emission-related actuators to ensure smooth running, optimal fuel economy and correct lambda control. Commonly searched under part numbers such as 0261207474 or 9643840680, this ECU is a direct-fit replacement for professional workshops and competent DIY mechanics who demand precise engine management performance.
Technical Information
- Manufacturer: Bosch
- Model: Peugeot 307 1.6 16V (Engine Code NFU, 80 kW)
- Product Codes: 0261207474, 9643840680, 261207474
- Additional Numbers: 1942E4, 1940V8, 19420000, d00, NFP, ME7.4.4
Fitment And Compatibility
Intended For Peugeot 307 Models Equipped With The 1.6 16V NFU Engine. May Also Be Found On Related Stellantis Platforms Using The Same Engine Calibration. Always Match The ECU Part Number And Hardware/Software Codes When Replacing To Ensure Correct Engine Mapping And Sensor Compatibility.
Replacement Procedure (Overview)
Recommended For Qualified Technicians Or Experienced DIY Mechanics. Typical Replacement Steps:
- Disconnect The Negative Terminal Of The Battery To Prevent Electrical Damage.
- Locate The ECU (Position Varies By Model Year; Check Vehicle Manual). Remove Any Protective Covers Or Brackets.
- Carefully Unplug Multi-Pin Connectors Using The Correct Release Clips To Avoid Damaging Terminals.
- Remove Mounting Fasteners, Swap The Unit, And Refit All Fixings.
- Reconnect Connectors And Battery. Clear Fault Codes And Read Live Data With A Diagnostic Tool.
- Note: Replacement May Require Immobilizer/ECU Coding Or Relearning With A Diagnostic Interface (e.g., Manufacturer Diagnostic Tool Or Compatible Scanner) To Restore Security Functions.
Installation Recommendations
- Perform Installation In A Dry, Static-Free Environment. Avoid Working In Heavy Moisture Or Direct Engine Heat.
- Use Properly Rated Tools And Take Care When Handling Connectors—Bent Pins Or Corroded Contacts Cause Intermittent Faults.
- After Installation, Run Full Diagnostic Checks, Clear Historic Fault Codes, And Monitor Sensor Signals (MAF, TPS, Lambda, Cam/Crank) To Confirm Correct Operation.
- If Immobilizer Or Key Recognition Issues Appear, Use Official Or Trusted Diagnostic Equipment To Perform Coding Procedures.
Why This Part Fails (Most Common Reasons)
- Water Ingress Or Corrosion From Leaking Seals Or Flooding Leading To Short Circuits.
- Electrical Spikes, Poor Battery Connections Or Jump-Start Events Causing Component Damage.
- Heat And Vibration Over Time Resulting In Solder Joint Fatigue And Intermittent Connections.
- Damaged Or Corroded Connector Pins Producing Faults Or Loss Of Communication.
- Software Glitches Or Faulty Internal Components Triggering Engine Running Irregularities.
For Workshops And Do-It-Yourself Mechanics Looking For A Reliable Replacement ECU: Verify The Part Number On The Unit You Remove And Compare It With The Codes Listed Above (0261207474, 9643840680, ME7.4.4). Correct Fitment And Proper Coding Ensure Restored Engine Performance, Smooth Idle And Accurate Emissions Control.
