Original Magneti Marelli IAW 48P2.31 engine control unit for PSA cars. This is a used part from disassembly, suitable as a direct replacement for a faulty ECU in selected Citroën and Peugeot models. Exact OEM numbers make it easy to verify compatibility – if the markings on your label match, it’s usually the right choice. Ideal for a quick fix without the lengthy wait for a new part and at a fraction of the cost of a new unit.

Key information and codes
– Manufacturer/Type: Magneti Marelli IAW 48P2.31 (ECU – Engine Control Unit)
– OEM PSA part number: 9642606280
– SW: 16.394.074 / 9645279980
– HW: 16.469.034
– Makes and models: Citroën C5, Citroën C8, Peugeot 406 (always check against the codes on your original unit)
– Fuel/Engine: PSA EW series petrol engines (1.8/2.0 16V – common application, check with VIN and ECU tag)
– Purpose: injection and ignition control unit for PSA cars

Compatibility
– Fits: Citroën C5, Citroën C8, Peugeot 406 if ECU/SW/HW numbers match.
– Compliance is decisive: IAW 48P2.31 + 9642606280 + SW 9645279980 (16.394.074) + HW 16.469.034.
– When replacing, always compare the complete designation on the label of your old unit and the connector design.

Assembly and coding
– The unit is paired with an immobilizer/BSI in the PSA system. After assembly it usually requires:
– playback of content (cloning) from the original ECU, or
– virginalization and subsequent pairing with the car by diagnostics.
– Recommended to have assembly and coding performed by a specialist with experience with Magneti Marelli 48P2 ECUs.

Why choose this part?
– Original Magneti Marelli/PSA quality.
– Quick solution to frequent ECU faults on the listed models.
– Significant savings compared to a new unit.
– Suitable for car mechanics and home repairs – clearly identifiable by codes.

How to verify correctness
– Check type: IAW 48P2.31.
– Compare OEM numbers: 9642606280, 9645279980, SW 16.394.074, HW 16.469.034.
– Check the compatibility of the connectors and the location in the vehicle.
– In case of confusion, send us the VIN and a photo of the label from your ECU.

Search Terms (SEO)
Citroën C5 ECU, C8 engine control unit, Peugeot 406 injection unit, Magneti Marelli IAW 48P2.31, ECU 9642606280, SW 9645279980, HW 16.469.034, PSA petrol 1.8/2.0 16V control unit.

Note: Used condition, normal signs of use consistent with the disassembled part. The photos and numbers on the label are crucial for making the right choice. If you need, we can advise on compatibility and coding procedure.

Designed to seamlessly integrate with the original vehicle systems, this ECU facilitates accurate sensor data processing and injector activation, enhancing overall drivability. Over time, ECUs like this can fail due to electrical issues, exposure to heat, or moisture, leading to engine misfires, starting problems, or reduced power. Replacing the unit can restore the vehicle’s correct operational parameters and improve reliability.

Installation involves disconnecting the battery, removing the dashboard or engine bay covers (depending on model), unplugging the old ECU, and mounting the new unit with proper connectors. Calibration or coding may be required depending on the car’s immobilizer and security system.

Technical information

• Manufacturer: Magneti Marelli
• Model: IAW 48P2.31
• Applicable Vehicles: Citroën C5, Citroën C8, Peugeot 406
• Product Codes: 9642606280, 9643790280
• Additional Numbers: HW 9642606280, SW 16.394.064, SW 9643790280, HW 16.469.034