High-quality Bosch EDC16C34 engine control unit designed for PSA Group 1.6 HDi diesel engines (80 kW). This ECU is a direct-fit replacement for many Citroën and Peugeot applications and is commonly searched by part numbers such as 0281013872 and 9664843780. Built with OEM-level electronics, the unit manages fuel injection timing, boost control, EGR interaction and engine diagnostics — making it an essential component for correct engine operation. Ideal For Professional Workshops And Experienced DIY Mechanics Who Need A Reliable Replacement ECU That Supports Cloning Or Reinitialization.

Technical Information

• Manufacturer: Bosch
• Model: EDC16C34
• Product Codes: 0281013872, 281013872
• Additional Numbers: 9664843780, 1677633280, 1943K7, 1943K8, 1943V5, 9653958980, 1942WE, 1942WF, HW 9653958980, NFP
• Application: Citroën And Peugeot Vehicles With 1.6 HDi 80 kW Engine
• Known Model Example: Citroën C4 Picasso

Installation And Coding – Important

• The Unit Is Used And Is Paired With The Original Vehicle (VIN/PIN/Keys).
• Commissioning Options:
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 (Possibly Online) + Key Adaptation.
• It Is Recommended To Be Performed By A Technician With PSA Service Equipment (DiagBox/Lexia/PP2000).
• Always Disconnect The Battery Before Removal/Installation And Follow The Manufacturer’s Procedure To Avoid Damaging The Unit.

Fitment And Application

This Bosch EDC16C34 ECU Is Intended For 1.6 HDi Diesel Engines Producing 80 kW Found Across Various Citroën And Peugeot Models. The Unit Is Frequently Fitted To Vehicles Such As The Citroën C4 Picasso And Other PSA Models Using The Same Engine Management Platform. Confirmed Compatibility Can Be Determined From The Listed Part Numbers During Parts Lookup.

Function And Common Failure Causes

The ECU Controls Fuel Injection, Turbocharger Management, EGR Interaction, Engine Safety Strategies And Fault Reporting Via OBD. Common Causes Of Failure Include Connector Corrosion Or Water Ingress, Damaged Power Supply Or Grounding Circuits, Solder Joint Fatigue On The PCB (Thermal Cycling), And Corrupted EEPROM/Flash Data. Electrical Surges Or Poorly Performed Repairs Can Also Lead To Malfunctions.

Installation Recommendations

• Disconnect The Battery And Wait Several Minutes Before Starting Work.
• Observe ESD Precautions When Handling The ECU; Avoid Touching Pins And Circuitry.
• Inspect Wiring Harness And Connectors For Corrosion Or Damage; Repair Faulty Wiring Before Installing The New Unit.
• Fit The Unit Securely In Its Mounting Location And Ensure Proper Ground Connections.
• After Mechanical Installation, Perform Either Cloning Or Virginization And Proper Coding/Key Adaptation As Described Above.
• Verify Proper Operation By Reading Live Parameters And Checking For Stored Fault Codes After Commissioning.

Why This Unit Fails Most Often

Failures Typically Stem From Environmental Exposure (Moisture, Road Salt), Electrical Issues (Voltage Spikes, Poor Grounding), Or Internal Component Stress Due To Heat Cycling. In Many Cases, Symptoms Appear As Intermittent Engine Stalling, Loss Of Power, Erratic Fuel Trim Or Persistent Engine Fault Codes. Addressing The Underlying Cause (Damaged Connectors, Faulty Alternator, Or Short Circuits) Is Essential To Prevent Repeat Failures.

Why Choose This ECU

This Bosch EDC16C34 Unit Carries Recognized OEM Part Numbers And Is Suited For Professional Repair Operations. For Mechanics And Experienced DIY Enthusiasts Seeking A Direct Replacement With Full Support For Cloning Or Diagnostic Reprogramming, This Unit Offers A Cost-Effective Route To Restore Engine Management Functionality.