Description
Product Overview
This Bosch Engine Control Unit (ECU) EDC16C34, part number 0281012529 (also referenced as 9663475880), is designed for PSA diesel engines and is commonly fitted to the Citroën C3 1.4 HDi 50 kW. The ECU manages critical engine functions including fuel injection, boost control, air/fuel mixture and emissions systems to ensure reliable combustion, economy and drivability.
Compatibility And Part Numbers
This unit is compatible with PSA Group vehicles (Citroën and Peugeot) that use the Bosch EDC16C34 platform. It is often identified by these product codes: 0281012529, 9663475880, 1943T3, 1677616480, 9657699480 and the internal designation EDC16C34. Always confirm compatibility by matching part numbers with the vehicle’s existing ECU before purchase.
Key Features
- Engine management for 1.4 HDi diesel engines (50 kW)
- Bosch EDC16C34 platform for precise diesel control
- Supports fuel injection timing, boost and emission control
- Designed for fitment in PSA Citroen/Peugeot applications
Technical Information
- Manufacturer: Bosch
- Model: EDC16C34
- Product Codes: 0281012529, 9663475880
- Additional Numbers: 1943T3, 1677616480, 9657699480
Replacement And Installation
Installation should be carried out by a trained technician or an experienced DIYer familiar with engine electronics. General steps include disconnecting the battery (negative terminal first), removing any protective covers, unplugging the ECU connectors and unbolting the unit from its mounting. After mechanical installation, the ECU will normally require vehicle-specific programming or immobiliser matching using a diagnostic tool or dealer-level software. Verify wiring harness condition and connector pins before fitting to avoid immediate failures.
Common Failure Modes And Service Advice
ECUs are durable but can fail due to moisture ingress, corrosion, heat cycling, poor grounding or wiring faults. Symptoms of ECU issues include engine starting problems, irregular idling, loss of power, or fault codes related to fuel or emissions systems. There is no fixed lifespan; failures are more frequent on high-mileage or water-exposed vehicles. Always diagnose fully to rule out sensor, actuator or wiring faults before replacing the ECU.
Who Should Buy
This ECU is suitable for professional auto shops and experienced DIY mechanics working on PSA Citroen or Peugeot diesel vehicles, particularly Citroën C3 1.4 HDi 50 kW applications. Purchase when part numbers match the vehicle reference; budget for programming and immobiliser matching when planning the replacement.
