Description
High-quality Bosch EDC16C34 Engine Control Unit (ECU) designed for PSA vehicles. This ECU is a direct-fit solution commonly used on Peugeot 307 66 kW (1.6 HDi) applications and is suitable for professional mechanics and experienced DIY technicians who need a reliable injection control module.
The unit manages fuel injection, turbo control and engine timing to optimise combustion, fuel consumption and exhaust emissions. Installing a correct, compatible ECU helps restore drivability, smooth idle and proper throttle response. Many technicians search by product codes, so the included references make cross-checking simple and fast.
Key Benefits
- Accurate engine and injection control for consistent performance.
- Helps improve fuel economy and reduce exhaust emissions when properly configured.
- Direct compatibility with specified PSA 1.6 HDi 66 kW applications when product codes match.
- Ideal for workshop replacements or skilled DIY repairs.
Installation & Replacement Notes
- Before starting, disconnect the vehicle battery to avoid electrical damage.
- Locate the ECU (typically in the engine bay or under the passenger dashboard depending on the model). Remove the securing bolts and carefully unplug all wiring connectors.
- Fit the replacement unit, reconnect connectors and secure mounting. Reconnect the battery.
- In most cases the ECU will require programming or immobilizer synchronization with a dealer-level or aftermarket diagnostic tool to match vehicle VIN and immobilizer data. Ensure you have access to appropriate diagnostic equipment or professional service.
Common Failure Modes & Symptoms
- Symptoms may include no-start, intermittent stalling, engine misfires, poor fuel economy or illuminated engine warning lights.
- Failures are often caused by water ingress, connector corrosion, heat stress, wiring faults or electrical surges.
- Because the ECU interfaces with many sensors and actuators, always inspect wiring harnesses, grounds and related sensors before replacing the unit.
Compatibility Advice
This ECU is intended for PSA applications that list the matching product codes. Always verify compatibility by matching the product codes printed on the unit with the codes required by the vehicle. If in doubt, provide the original unit’s code to a parts specialist or use a VIN lookup.
Technical Information
Manufacturer: Bosch
Model: Peugeot 307 (66 kW) – 1.6 HDi
Product Codes: 0281011863, 9661773380, 1940JJ, 1940JK
Other Numbers: HW 9653958980
If you are a professional mechanic or a competent DIYer, this Bosch EDC16C34 ECU provides the precise control needed for reliable engine operation. Remember that ECU replacement often needs proper coding and immobilizer alignment; plan for diagnostic time or a service visit to complete the installation and ensure fault-free operation.
