Description
Engine control unit BOSCH ME7.4.5 for PEUGEOT 307 1.6 16V vehicles.
This Bosch ME7.4.5 engine control unit (ECU) is a direct-fit electronic control module commonly used in petrol Peugeot 307 1.6 16V models. It controls fuel injection, ignition timing and a range of engine management functions to ensure smooth running, optimal fuel consumption and emission control. Frequently searched by OE and Bosch part numbers, this unit is aimed at professional workshops and DIY mechanics who need a reliable replacement for fault diagnosis and repair.
Technical Information
Manufacturer: Bosch
Model: Peugeot 307 1.6 16V
Product Codes: 0261201610
Other Numbers: 9663394680, 9652552380, 194096
Compatibility And Application
Designed for PEUGEOT 307 with the 1.6 16V petrol engine. Ideal for use where the original ECU shows internal faults, communication errors, or fuel/ignition control issues. Always check the part numbers against the unit being replaced when ordering to ensure correct match.
How It Works And Common Failure Modes
The ME7.4.5 ECU manages injection timing, fuel quantity, ignition mapping, lambda control and diagnostics via CAN/K-Line interfaces. Typical causes of ECU failure include connector corrosion and water ingress, voltage spikes or poor battery/charging system conditions, thermal stress from engine bay heat, and internal component degradation over time. Fault codes, engine stalling, misfires, or complete no-start conditions are common symptoms of a failing unit.
Replacement Procedure
Replacement should follow a controlled workshop procedure. Typical steps:
- Disconnect the negative battery terminal and wait a few minutes to ensure systems are powered down.
- Remove any engine covers and access panels to reach the ECU location (usually in the engine bay, near the firewall or under the airbox depending on model year).
- Carefully unplug all wiring connectors and release any locking tabs—avoid pulling on wires.
- Unbolt the ECU from its mounting and remove the unit.
- Install the replacement ECU, secure mounting bolts, reconnect all connectors and reassemble removed panels.
- Depending on replacement method (see Coding section), perform cloning or coding before final testing.
Installation Recommendations
Always work with a fully charged and stable vehicle electrical system; inspect and clean connectors and earth points before fitting a new unit. Use dielectric grease on exposed electrical contacts to reduce corrosion risk. If coding or cloning is required, perform these procedures in a controlled environment with the vehicle stationary and with a stable power supply.
Installation And Coding – Important
– The Unit Is Used And Is “Paired” With The Original Vehicle (VIN/PIN/Keys).
– Options For Commissioning:
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 Performed By A Specialist With PSA Service Equipment (DiagBox/Lexia/PP2000).
– Before Removal/Installation Always Disconnect The Battery And Follow The Manufacturer Procedure To Avoid Damage To The Unit.
Why This Part Usually Fails
Failures commonly result from electrical stress (voltage spikes, poor battery/alternator performance), moisture intrusion and corrosion at connectors, mechanical damage during engine work, or software/data corruption. Preventive maintenance—such as keeping connectors dry and ensuring proper battery condition—reduces the risk of premature ECU failure.
Keywords: Bosch ME7.4.5 ECU, 0261201610, Peugeot 307 ECU, Engine Control Unit, ECU Replacement, 9663394680.
