Description
Overview
Bosch EDC15C2 Engine Control Unit designed for PSA 2.0 HDi diesel engines, commonly fitted to the Citroën Xsara Picasso 2.0 HDi. This ECU is typically identified by OEM numbers such as 0281011518 and 9658373180 and is often searched by these part codes. The unit manages core engine functions and communicates diagnostic information to workshop tools.
Features & Function
- Controls fuel injection timing and quantity for common-rail diesel operation.
- Manages turbo boost and related actuators to optimize power and efficiency.
- Oversees emission-related subsystems such as EGR and works with sensors to maintain combustion control.
- Provides onboard diagnostics (OBD) communication for fault reading and live data access.
Compatibility & Application
Intended for PSA group diesel vehicles with the 2.0 HDi engine. Confirm fitment by matching the main product numbers: 0281011518, 9658373180, 1939EL, 1940Q1, 1940Q2. Common application includes Citroën Xsara Picasso 2.0 HDi; other Citroën and Peugeot models with the same engine ECU hardware may also use this part number—always verify by VIN or part reference.
Replacement & Installation Notes
- Basic replacement steps: disconnect battery, locate ECU (engine bay or behind glovebox depending on model), remove securing bolts, unplug the wiring harness and swap the unit. Refit in reverse order.
- Observe ESD precautions and avoid damage to connector pins during removal and installation.
- Important: Many PSA Bosch ECUs are linked to the vehicle immobilizer system and may require coding or pairing with the vehicle using dealer-level or specialist programming tools. Without proper matching, the vehicle may not start.
- If unsure about coding or immobilizer procedures, seek professional diagnostic and programming support.
Common Faults & Lifespan
Typical symptoms of ECU issues include engine won’t start, rough idling, intermittent stalling, loss of power, and persistent engine management warning lights. Faults often logged as communication errors or sensor-related DTCs. Causes can include water ingress, connector corrosion, thermal stress, or electrical surges. Lifespan varies with operating conditions; regular inspection of connectors and vehicle electrics helps reduce failure risk.
Technical Information
- Manufacturer: Bosch
- Model: EDC15C2
- Product Codes: 0281011518
- Other Numbers: 9658373180, 1939EL, 1940Q1, 1940Q2
Searchable by part number for quick identification. Recommended for professional mechanics and competent DIY technicians who can perform safe handling and, if necessary, arrange ECU coding or immobilizer pairing.
