Description
Engine Control Unit BOSCH For Citroën C2 C3
High-quality Bosch ME7.4.4 engine control unit designed for Citroën C2 and Citroën C3 models. This ECU is referenced under common part numbers such as 0261207858 and 9649314580 and is a direct-fit electronic control module for the fuel injection and engine management systems. Ideal for professional workshops and experienced DIY mechanics who need a reliable replacement part to restore engine performance, diagnostics functionality, and drivability. Searchable by OEM codes (0261207858, 9649314580, 9646992680, 1942QF) — these identifiers are often used when sourcing the correct unit for PSA vehicles.
Technical Information
- Manufacturer: Bosch
- Model: ME7.4.4
- Product Codes: 0261207858, 9649314580
- Additional Numbers: 9646992680, 1942QF, 261207858
Compatibility
Fits Citroën C2 and Citroën C3 applications where Bosch ME7.4.4 ECU part numbers listed above are specified. Always match the unit’s part numbers when searching to increase the chance of direct compatibility.
Installation Recommendations
Replacement of the ECU should be performed by a trained technician or an experienced DIYer comfortable with vehicle electronics. Typical installation steps:
- Disconnect the negative battery terminal before starting to avoid electrical damage.
- Remove any trim or covers to access the ECU (typically located in the engine bay or passenger compartment depending on model).
- Carefully unplug wiring harness connectors and release any locking tabs.
- Unscrew the mounting fasteners and remove the old unit.
- Install the replacement ECU, secure fasteners, reconnect harnesses and reassemble covers.
- Re-connect the battery and perform required software procedures (see coding options below).
Installation And Coding – Important
- The Unit Is Used And Is “Paired” With The Original Vehicle (VIN/PIN/Keys).
- Options To Commission The Unit:
- 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 Fails Most Often
- Moisture Ingress Or Corrosion: Water penetration or humid conditions can corrode connectors or PCB tracks.
- Thermal Stress: Repeated heating and cooling cycles may crack solder joints or damage internal components.
- Electrical Surges Or Short Circuits: Faulty wiring, poor grounding, or battery jump-starts can cause permanent ECU damage.
- Connector Damage Or Poor Contacts: Vibration and improper handling can lead to intermittent faults or failures.
- Component Age And Wear: Over time, capacitors or other passive components may degrade, leading to malfunction.
Notes For Mechanics And DIYers
This Bosch ME7.4.4 ECU is a critical module for engine management, controlling fuel injection, ignition timing and emissions-related functions. After physical replacement, appropriate cloning or coding is usually required to restore full vehicle functionality and to avoid fault codes or immobilizer-related issues. Using the correct diagnostic tools and following PSA procedures will ensure a reliable repair and reduce the risk of recurring faults.
