Description
Injection Control Unit BOSCH EDC15C2 from PEUGEOT 406 2.0 HDI RHZ
High-quality replacement electronic control unit (ECU) Bosch EDC15C2 designed for PSA diesel engines, commonly fitted to Peugeot 406 2.0 HDi (engine code RHZ). This unit controls diesel injection timing and quantity, contributing to optimal fuel economy, emissions control and engine responsiveness. Ideal for professional workshops and skilled DIY mechanics who search by part numbers such as 0281010363, 9641608080 or 1938S4.
Technical Information
- Manufacturer: Bosch
- Model: EDC15C2 (used in Peugeot 406 2.0 HDI RHZ)
- Product Codes: 0281010363, 9641608080, 1938S4
- Additional Numbers: 1940N4, 1940N6, NFP
Function And Application
The Bosch EDC15C2 is an electronic diesel control unit that manages fuel injection, engine timing and related engine-management functions for HDi diesel engines. It processes sensor inputs (engine speed, coolant temperature, air mass, turbocharger pressure, etc.) and controls injectors and actuators to ensure correct combustion, emissions compliance and drivability. This specific unit is compatible with Peugeot 406 2.0 HDi applications using the RHZ engine code and may also be found across related PSA models with similar engine electronics.
Installation Recommendations
- Always disconnect the vehicle battery before starting removal or installation to prevent electrical damage.
- Handle the ECU carefully; avoid static discharge and contamination of connector pins.
- Ensure connectors are clean and fully engaged; damaged pins or corroded sockets lead to intermittent faults.
- After fitting, follow the required commissioning procedure (cloning or coding) to restore full functionality—see the important coding section below.
- Recommended for installation by a trained technician when coding or key adaptation is required.
Installation And Coding – Important
– The unit is used and is “paired” with the original vehicle (VIN/PIN/keys).
– Options to enable 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).
– Before disassembly/assembly always disconnect the battery and follow the manufacturer’s procedure to avoid damage to the unit.
Why This Part Fails Most Often
Common failure causes include moisture ingress and corrosion at connectors, thermal stress and cracked solder joints, voltage spikes or battery/alternator faults, and internal component degradation after many years in service. Failures typically present as no-start conditions, rough running, loss of fuel pressure control or engine warning lights indicating injection/system fault codes.
Replacement Procedure (Overview)
- Disconnect the vehicle battery and wait briefly to remove residual voltage.
- Access and remove the ECU mounting fasteners and unplug all electrical connectors.
- Install the replacement unit, secure mounting, and reconnect all plugs ensuring correct seating.
- Perform data cloning or coding as required (see Installation And Coding – Important).
- Clear fault codes and run a diagnostic and functional check under load to confirm proper operation.
Suitable for professional garages and experienced DIY mechanics who need a direct-fit ECU identified by part numbers 0281010363 / 9641608080 / 1938S4. This Bosch EDC15C2 unit restores correct injection control on compatible Peugeot 406 2.0 HDi (RHZ) engines when installed and commissioned correctly.
