ECU Bosch ME7.4.4 0261207474 9650346080

Description

Engine control unit BOSCH ME7.4.4 NFU
It is a PEUGEOT 307 1.6 16V NFU 80KW

Part description

This ECU (engine control unit) Bosch ME7.4.4 is intended for Stellantis Citroën / Peugeot cars and according to the documents it comes from a Peugeot 307 1.6 16V NFU (80 kW). The unit is used to control injection and engine operation – in the event of a malfunction, problems with starting, erratic operation, performance or communication of diagnostics are typically manifested.

For used control units, correct data resolution (pairing with the car) is key to successful commissioning. Therefore, we recommend paying attention to the codes and procedures listed below.

Technical information

• Manufacturer: BOSCH
• Model: ME7.4.4
• Other numbers: 1942E4, 1940V8, NFP, NFU

Product codes

• Product codes: 0261207474, 9650346080

Installation recommendations

Generally/typically, replacing the ECU requires not only mechanical assembly, but also the correct operation of the data (pairing with the car). The exact procedure may vary depending on the specific equipment and design of the vehicle.

1) Before assembly

• Compare all numbers from the nameplate of the original unit and this ECU (especially 0261207474 and 9650346080).
• Check the match of the unit type (BOSCH ME7.4.4) and the designation from the documents.
• Visually check the connectors: bent pins, corrosion, cracks in the body of the unit, traces of water/oil.

2) Necessary tools and materials (in general)

• Basic set of ratchets/bits and screwdrivers
• Antistatic caution (ideally earthing) when handling electronics
• Cleaner for electrical contacts (as needed)
• PSA compatible diagnostics (for checking communication and subsequent adaptation)

3) Step-by-step assembly procedure

1. Turn the ignition off and wait for the control systems to go into idle mode.
2. Disconnect the battery (negative pole) and ensure that it is not accidentally reconnected.
3. Access the original ECU (exact access depends on the specific car design).
4. Carefully unlock the ECU connectors and disconnect them without prying the wiring.
5. Dismantle the unit mounting and remove the original ECU.
6. Compare the labels and connectors of the original and new units again.
7. Install this ECU in the bracket/storage and fix it securely.
8. Connect the connectors – make sure they are clean and properly closed/locked.
9. Connect the battery.
10. Perform a basic communication check via diagnostics (whether the unit is visible in the vehicle network).
11. If the engine does not start or the security is active, continue with the pairing solution (see block below).
• 4) Post-assembly checks and test drive/function verification
  • Verify that the engine starts and runs stably (idle, throttle response).
  • Check that the unit communicates with the diagnostics and that no new faults are present after the replacement.
  • Inspect connectors and wiring for heat, looseness, or mechanical stress.
  • After verifying the function, perform a test drive and recheck the status via diagnostics.

  5) The most common assembly mistakes + how to avoid them

  • Disconnecting/connecting connectors while the battery is connected → always disconnect the battery to minimize the risk of damage to the electronics.
  • Unit exchange based on similar appearance → part numbers (Bosch/PSA codes) decide, not shape.
  • Incomplete connectors → check the locking, even slight play can cause outages.
  • Underestimation of pairing/immobilizer → prepare to clone/virginize and then customize.

  Assembly and Coding – Important
  – The unit is used and is “paired” with the original car (VIN/PIN/keys).
  – Commissioning options:
  1) Cloning data from the old drive (EEPROM/Flash) – after the clone, the drive is plug and play.
  2) Virginization and subsequent initialization/telecoding via DiagBox (possibly online) + customization of keys.
  – Recommended to be performed by a specialist with PSA service equipment (DiagBox/Lexia/PP2000).
  – Always disconnect the battery before disassembly/assembly and follow the manufacturer’s procedure to avoid damaging the unit.

  Reasons why the part is damaged

  • Surge and voltage fluctuation (low battery, low voltage starting, charging problem).
  • Intrusion of water/moisture into the unit space or into the connectors and subsequent corrosion of the pins.
  • Thermal stress and aging of electronics (cracking of joints, degradation of components).
  • Incompetent handling (disconnecting connectors under voltage, damage to pins, mechanical stress on cabling).
  • Short circuit in wiring or faulty peripherals (eg damaged harness/connectors) which can overload the ECU.