Description
Magneti Marelli IAW 6LPB control unit for Citroën and Peugeot vehicles.
This Magneti Marelli IAW 6LPB ECU is intended for petrol 2.0 16V engines in a range of Citroën and Peugeot models. The unit manages fuel injection, ignition timing and engine diagnostics, helping to maintain smooth running, fuel efficiency and emissions control. Commonly searched by part numbers, this ECU is suitable for workshops and experienced DIYers who need a reliable replacement or spare for vehicles fitted with the IAW 6LPB platform.
Technical Information
- Manufacturer: Magneti Marelli
- Model: Citroën C5; Peugeot 307; Peugeot 407 (commonly fitted on 2.0 16V variants)
- Product Codes: IAW 6LPB; 9660774680; 9659580780; 2.0 16V
- Additional Numbers: 19423C4; 1939QZ; 1942ZP
Mounting And Coding – Important
- The Unit is used and is “paired” with the original vehicle (VIN/PIN/keys).
- Commissioning options:
- 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 carried out by a specialist with PSA service equipment (DiagBox/Lexia/PP2000).
- Always disconnect the battery before removal/installation and follow the manufacturer’s procedure to avoid damaging the unit.
Recommended Installation
Install the ECU in a dry, vibration-free location using the original mounting points. Before fitting, visually inspect the connector pins and harness for corrosion or damage. If reusing the original ECU harness, ensure all earths and power supplies are within specification. For proper commissioning either perform a full EEPROM/Flash clone from the donor unit or follow the virginization and telecoding procedure with DiagBox/PSA tools. Avoid connecting or disconnecting the ECU with the battery connected and take anti-static precautions when handling the unit.
Why This Part Most Commonly Fails
- Moisture ingress and corrosion at connector pins leading to intermittent connections.
- Electrical faults such as voltage spikes, poor battery/alternator regulation or incorrect jump-starting damaging internal components.
- Thermal stress and age-related solder joint failures in older units.
- Damage caused by faulty sensors or wiring shorts that overload ECU inputs/outputs.
This replacement ECU is a practical option for garages and experienced DIY mechanics who require the correct hardware and service tools to complete cloning or coding. Searchable product codes included above make it easier to find the exact unit you need for common Citroën and Peugeot 2.0 16V applications.
