Description
Bosch injection control unit for Citroën and Peugeot vehicles with 1.4 VTi engine. It is from Citroën C4 B7 1.4 VTi (8FP).
High-quality Bosch MEV17.4.2 engine control unit (ECU) tailored for Citroën and Peugeot petrol engines 1.4 VTi. Ideal for professional workshops and DIY mechanics who search by product number: 0261S06620, 9676379780, 9666319180. The unit manages fuel injection, ignition timing and engine diagnostics to restore proper engine running, improve drivability and eliminate misfires or limp-home mode when the original ECU is faulty.
Key Features
- Bosch MEV17.4.2 platform — proven control logic for small-displacement petrol engines.
- Direct replacement for ECUs carrying part numbers 0261S06620 / 9676379780 / 9666319180.
- Compatible with Citroën C4 II (B7) 1.4 VTi (engine code 8FP) and other Citroën/Peugeot vehicles using the same ECU variant.
- Controls fuel injection, ignition advance, lambda feedback and basic diagnostics (OBD).
How It Works And Typical Applications
The ECU continuously reads sensors (air mass, throttle position, coolant temperature, crankshaft/camshaft position, lambda) and calculates injector pulse widths and ignition timing to maintain optimal combustion. When an ECU fails, symptoms typically include engine stalling, rough idle, poor acceleration, increased fuel consumption or diagnostic trouble codes related to injection and ignition.
How To Replace
- Park the vehicle on a level surface, engage the parking brake and remove the ignition key.
- Disconnect the negative battery terminal and wait a few minutes to discharge capacitors.
- Locate and access the ECU (usually in the engine bay or passenger footwell depending on model); consult vehicle repair manual for exact location.
- Carefully unplug electrical connectors using proper release tabs; avoid pulling on wiring.
- Remove mounting bolts and replace the unit with the new/replacement ECU, securing bolts to manufacturer torque specification.
- Re-connect connectors, reattach battery and follow coding/initialization procedure described below.
Recommendation For Installation
Perform installation in a dry, static-free environment. Use ESD precautions when handling the ECU. Ensure connector pins and seals are clean and undamaged. Replace any corroded connector bodies or mounting hardware. After mechanical installation, complete necessary coding or cloning so the unit communicates correctly with immobilizer, dashboard and other modules.
Installation and Coding – Important
- The Unit Is Used And Is “Paired” With The Original Vehicle (VIN/PIN/Keys).
- Options For Commissioning:
- 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).
- Before Disassembly/Assembly Always Disconnect The Battery And Follow The Manufacturer Procedure To Avoid Damage To The Unit.
Technical Information
- Manufacturer: Bosch
- Model: MEV17.4.2 (Engine Control Unit / ECU)
- Product Codes: 0261S06620, 9676379780, 9666319180
- Other Numbers: 1944C0, 1677637780, 1944C1
- Vehicle Fitment: Citroën C4 II (B7) 1.4 VTi (Engine Code 8FP); Also Fits Compatible Citroën/Peugeot Models Using Bosch MEV17.4.2 ECU Variants
Reason Why Part Fails Most Often
Common causes of ECU failure include moisture ingress and corrosion of connectors, thermal fatigue from prolonged high under-hood temperatures, electrical surges (faulty alternator or jump-starting errors), and internal memory corruption. Connector damage or poor grounding can also produce intermittent faults that mimic ECU failure.
Search Keywords: Bosch MEV17.4.2 ECU, 0261S06620, 9676379780, 9666319180, Citroën C4 1.4 VTi ECU – purchase this control unit to restore reliable engine performance and remove drivability faults. Suitable for professional fitment and experienced DIY installers.
