This Magneti Marelli IAW 6LPB ECU is compatible with a range of Stellantis petrol engines used in Citroën and Peugeot models and is frequently searched by its OEM reference numbers 9663318680, 9659580780, 1942ZN and 1942ZP. Designed for professional workshops and experienced DIYers, the unit controls fuel injection, ignition timing and related engine management functions to ensure smooth running, optimal emissions and fuel economy. Typical searches use the part numbers or vehicle model names (Citroën C5, Peugeot 307, Peugeot 407), so this listing includes those references for fast findability.

Technical Information

• Manufacturer: Magneti Marelli
• Model: IAW 6LPB
• Product Codes: 9663318680, 9659580780
• Additional Numbers: 1942ZN, 1942ZP

Applications

• Citroën C5 (compatible with vehicles using IAW 6LPB ECU)
• Peugeot 307 (compatible with vehicles using IAW 6LPB ECU)
• Peugeot 407 (compatible with vehicles using IAW 6LPB ECU)

Function and Common Faults

The IAW 6LPB is an engine control unit responsible for managing fuel injection, ignition timing, idle control and diagnostics (OBD). It processes sensor signals (MAP/MAF, crankshaft/cam sensors, temperature, oxygen sensors) and controls actuators (injectors, ignition coils, idle control valve) to maintain engine performance and emissions. Common reasons for ECU malfunction include water ingress, connector corrosion, thermal stress and damaged solder joints, voltage spikes or software/EEPROM corruption. Faults can present as no-start, rough idle, stalling, misfires, or error codes logged in the vehicle fault memory.

Replacement Procedure

1. Park the vehicle on a level surface, engage the parking brake and disconnect the negative battery terminal.
2. Locate the ECU (position varies by model: often in the engine bay or behind the glovebox/dashboard). Consult vehicle repair manual for exact location.
3. Remove any covers, unplug electrical connectors by pressing release tabs, and unbolt the unit. Handle connectors and locking tabs carefully to avoid damage.
4. Install the replacement ECU, secure mounting bolts and reconnect connectors. Ensure connector pins and gaskets are clean and undamaged.
5. Perform required commissioning: cloning or programming/initialization (see Installation and Coding – Important below).
6. Reconnect the battery and verify vehicle starts and runs; clear fault codes and perform a benchmark test drive while monitoring live data with a diagnostic tool.

Installation Recommendations

• Always disconnect the battery before removing or fitting the ECU to prevent damage.
• Observe electrostatic discharge (ESD) precautions and avoid touching connector pins and circuit board areas.
• Inspect wiring harness and connector seals for corrosion or water damage; repair or replace if necessary to prevent repeat failures.
• Use an appropriate PSA diagnostic or programming tool for initialization, key adaptation and coding where required.
• After fitting, clear fault codes and verify inputs/outputs with live data to confirm correct operation.

Installation and Coding – Important

• The unit is used and is ‘paired’ with the original vehicle (VIN/PIN/keys).
• Options for commissioning:
  1. Cloning data from the old unit (EEPROM/Flash) – after cloning the unit is plug and play.
  2. 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 removal/installation always disconnect the battery and follow the manufacturer’s procedure to avoid damage to the unit.

Why This Part Fails Most Often

Failures are most commonly caused by environmental and electrical factors: moisture or water ingress (especially after leaks or flooding), corrosion of connector pins, thermal cycling that weakens solder joints, and voltage surges from a failing alternator or jump-starts. Connector damage, poor grounding and previous improper repairs can also lead to intermittent faults or permanent ECU failure.

Product Overview

This Magneti Marelli engine control unit (ECU) is designed for Stellantis vehicles Citroën C8 and Peugeot 807 equipped with the 2.2 16V petrol engine. Ideal for professional workshops and experienced DIY mechanics, the unit is often searched for by its part numbers 9646169280, 9649974680 or internal codes such as 1938VK / 4MP2.18. Supplying a direct electronic replacement for the vehicle’s engine management system, it restores precise fuel injection, ignition control and on-board diagnostics functionality.

Key Functions

The ECU manages core engine functions including fuel injection timing, ignition mapping, idle control and real-time processing of sensor inputs (airflow, throttle position, coolant temperature, oxygen sensors, etc.). It also handles on-board diagnostic communication and immobilizer/anti-theft interface, ensuring the engine runs efficiently, meets emission parameters and reports faults for diagnosis.

Compatibility And Searchability

Fits: Citroën C8 (2.2 16V) and Peugeot 807 (2.2 16V). Common reference codes used to find this unit: IAW 4MP2.18, 4MP2.18, 9646169280, 9649974680, 1938VK. Use these product codes when searching online or checking parts lists to speed up identification.

Replacement And Installation

Replacement is straightforward for a trained technician but requires careful handling. Typical steps:

• Disconnect the negative battery terminal before any work.
• Locate the ECU (refer to vehicle manual for exact position and access panels).
• Remove protective covers and carefully unplug electrical connectors, avoiding damage to connector pins and locking tabs.
• Unbolt the ECU from its mounting and replace with the new unit, securing all bolts to the correct torque.
• Reconnect connectors, replace covers and reconnect the battery.
• After mechanical installation, the unit may require coding or initialization so the vehicle recognizes and configures the ECU correctly.

Installation And Coding – Important

– The unit is used and is “paired” with the original vehicle (VIN/PIN/keys).
– Commissioning options:

1. Cloning data from the old unit (EEPROM/Flash) – after cloning the unit is plug and play.
2. Virginization and subsequent initialization/telecoding via DiagBox (or online) + key adaptation.

– Recommended to be performed by a technician with PSA service equipment (DiagBox/Lexia/PP2000).
– Before removal/installation always disconnect the battery and follow the manufacturer procedure to avoid damaging the unit.

Why This Part Fails

ECUs can fail due to several common causes: thermal stress and repeated heating/cooling cycles, moisture ingress or corrosion on connectors, voltage spikes and poor electrical grounding, or internal solder joint cracks. Failures may present as engine misfires, stalling, failure to start, erratic sensor readings or persistent fault codes. Environmental exposure and vehicle history (water damage, jump-starting practices) are frequent contributing factors.

Service Life And Recommendations

Engine control units are designed to last many years; however, their lifespan depends on environmental conditions and electrical system health. To maximize longevity, ensure good battery condition, secure and clean connectors, and avoid prolonged exposure to heat and moisture. If replacing an ECU, consider cloning or professional initialization to restore full functionality and immobilizer integration.

Technical Information

Manufacturer: Magneti Marelli
Model: Citroën C8 / Peugeot 807 (2.2 16V)
Product Codes: IAW 4MP2.18, 4MP2.18
Other Numbers: 9646169280, 9649974680, 1938VK

Mounting Recommendation

Install the unit on a stable, vibration-isolated mounting using original fasteners where possible. Ensure connectors are fully engaged and locking tabs are secure. After installation and coding, verify no fault codes remain and perform a road test to confirm correct engine behavior.

This Bosch EDC16C3 engine control unit (ECU) is a direct replacement option for Peugeot 307 1.4 HDi engines and is commonly referenced under OE and aftermarket numbers such as 0281011090, 9654984380 and 9647785580. Designed for professional mechanics and experienced DIYers, this unit controls critical engine functions including fuel injection timing, air management, EGR and onboard diagnostics. The listing includes the most used product identifiers to help rapid lookup and compatibility checks by part number.

Key Features

– Bosch EDC16C3 platform: proven architecture for diesel engine control.
– Controls fuel injection maps, timing, idle regulation and diagnostic fault reporting.
– Compatible with standard Peugeot engine sensors and actuators used on 1.4 HDi applications.
– Supplied with common reference numbers to simplify identification and ordering.

Technical Information

• Manufacturer: Bosch
• Model: EDC16C3 / Engine Control Unit For Peugeot 307 1.4 HDi
• Product Codes: 0281011090, 281011090
• Additional Numbers: 9654984380, 9647785580, 1940WN, 1940WP, NFP

Compatibility

Typical application: Peugeot 307 with 1.4 HDi diesel engines. Use the OE and supplier numbers above to confirm fitment for your specific sub‑model and engine variant. These identifiers are frequently used by workshops when sourcing replacement ECUs.

How The Unit Functions

The ECU governs injection timing, rail pressure commands (where applicable), idle control, intake charge management and emission-related actuators such as the EGR. It processes sensor inputs (MAF/MAP, crank/cam sensors, coolant and intake temperature sensors, rail pressure/supply sensors) and outputs control signals to injectors, high‑pressure pumps, EGR valves and actuators. It also stores diagnostic trouble codes for fault finding via standard diagnostic tools.

Replacement Procedure (Overview)

1. Always disconnect the battery before starting to avoid electrical damage and follow vehicle manufacturer safety procedures.
2. Locate and remove any protecting covers to access the ECU (often in the engine bay or behind glovebox depending on vehicle configuration).
3. Unplug all electrical connectors and remove mounting screws. Handle the ECU carefully to avoid static or moisture damage.
4. Install the replacement unit mechanically and reconnect all harnesses. Ensure connectors are fully seated and locked.
5. Follow the installation and coding steps described below — cloning or coding is typically required to restore full functionality.

Installation And Coding – Important

• The Unit Is Used And Is “Paired” With The Original Vehicle (VIN/PIN/Keys).
• Options For Commissioning:
1. Cloning Data From The Old Unit (EEPROM/Flash) – After Cloning The Unit Is Plug And Play.
2. 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).
• Always Disconnect The Battery Before Removal/Installation And Follow Manufacturer Procedures To Avoid Damaging The Unit.

Why These Units Fail Most Often

Common causes of ECU failure include water ingress and corrosion, thermal stress and solder‑joint fatigue, voltage spikes or faulty alternator/regulator parts, and damage from poor connector contacts. Some symptoms reported in failing units are intermittent stalling, hard starting, loss of fuel pressure control, or storage of engine management fault codes. In many cases, the ECU is diagnosed after related sensors or wiring faults have been excluded.

Recommendations For Installation

• Perform a full electrical check of wiring, grounds and sensors before declaring an ECU defective.
• Replace any damaged connectors, pins or sealing grommets to prevent future moisture ingress.
• If cloning is chosen, ensure the donor unit has matching hardware and the cloning is performed with reliable tools and software.
• After installation and coding, clear DTCs and verify operation under load; perform a road test to confirm normal behavior.

Notes For Buyers

The listing prominently includes OE and supplier numbers to ease identification: 0281011090, 9654984380, 9647785580, 1940WN, 1940WP. Ideal for workshops and experienced DIY technicians who can perform or supervise coding/cloning steps. This unit is intended as a replacement ECU for compatible 1.4 HDi Peugeot 307 applications; always match the part numbers listed here to your vehicle’s existing ECU label before purchase.

This Continental SID807EVO engine control unit (ECU) is intended for Peugeot 308 models equipped with the 1.6 e-HDi Start-Stop system. It replaces the original injection control module and restores engine management, fuel dosing and Start-Stop functionality. Ideal for professional workshops and experienced DIY mechanics looking for a direct-fit replacement by product number (S180123008 / 9800268980 / 9666681180) or cross-reference codes.

Technical Information

• Manufacturer: Continental
• Model: Peugeot 308 1.6 e-HDi Start-Stop
• Product Codes: S180123008, A 9800268980, 9666681180
• Other Numbers: 1607488880, 1677627080, 1607488980
• ECU Type: SID807 EVO (Injection Control Unit)

Installation and Coding – Important

• The unit is used and is “paired” with the original vehicle (VIN/PIN/keys).
• Options for commissioning:
  1. Cloning data from the old unit (EEPROM/Flash) – after cloning the unit is plug and play.
  2. Virginization and subsequent initialization/telecoding via DiagBox (or online) + key adaptation.
• Recommended to be performed by a technician 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.

Recommendations For Installation

Recommended steps for replacement (general guidance for experienced technicians):

• Park the vehicle on a flat surface, engage parking brake and disconnect the negative battery terminal before starting.
• Locate the ECU (position may vary by model/year); gain access by removing trim panels or glovebox as required.
• Release connector locks carefully, avoid pulling on wiring, and inspect connector pins for corrosion or damage.
• Remove mounting screws and extract the unit. If cloning, keep the old unit and connect to cloning tool before installation of the replacement.
• Reinstall in reverse order, reconnect battery only after all connectors and fastenings are secured.
• Perform required cloning or telecoding/initialization with appropriate PSA diagnostic equipment to restore full functionality.

Common Reasons For Failure

• Water ingress or corrosion at connector pins leading to intermittent faults or total failure.
• Thermal stress and aging of electronic components after long service life or repeated Start-Stop cycles.
• Voltage spikes, poor battery/charging system condition or jump-start incidents damaging internal electronics.
• Poor connector contact or damaged wiring harness causing communication errors and fault codes.

Typical symptoms of a failing injection ECU: engine warning light (MIL), rough running, stalling, loss of Start-Stop operation or no-start condition. Replacing the unit without proper cloning/coding may leave the vehicle non-functional; follow the Installation and Coding instructions above.

This Injection Engine Control Unit (ECU) J34P is a direct-fit electronic module used on Stellantis petrol engines and is commonly searched for by its part numbers 9655883280 and 9661978880. Designed to manage fuel injection timing, ignition and engine sensors, the unit ensures smooth idling, optimal fuel economy and correct emissions control. Ideal for professional workshops and DIY mechanics who maintain Peugeot 206 vehicles or are replacing a failed injection ECU with matching hardware and software requirements.

Technical Information

• Manufacturer: Johnson Controls (listed in some references under Valeo / Stellantis parts)
• Model: Peugeot 206 (2006) 1.4 55 kW, Engine Code KFW
• Product Codes: 9655883280, 9661978880
• Additional Numbers: 194222, 1943PE, NFP

Function

The ECU Controls Fuel Injection And Ignition Timing Based On Input From Crankshaft/Camshaft Sensors, Airflow And Temperature Sensors, Lambda Probes And Throttle Position. It Processes Sensor Data To Optimize Combustion, Emissions And Driveability Across RPM Range.

Most Common Failure Causes

Failures Typically Result From Moisture Ingress, Corroded Or Broken Connector Pins, Electrical Surges, Heat And Vibration Stress, Or Internal Component Degradation (For Example Faulty Solder Joints Or Capacitors). Symptoms May Include Engine Misfire, Stalling, Hard Starting, Loss Of Power Or Fault Codes Related To Injection And Ignition.

Replacement Procedure

General Steps For Swap:

1. Disconnect The Battery Before Any Work To Avoid Short Circuits Or Damage To The Module.
2. Locate The ECU (Position Varied By Model; Refer To Vehicle Repair Manual).
3. Unplug All Wiring Harnesses Carefully, Release Any Securing Clips And Remove Mounting Fasteners.
4. Install The Replacement Unit, Secure Fastenings And Reconnect Harnesses Ensuring Clean, Undamaged Pins.
5. Perform Required Coding/Initialization (See Installation And Coding Section Below).
6. Reconnect Battery And Verify Engine Start, Clear Any Fault Codes And Run Functional Checks.

Installation Recommendations

Handle The ECU As An ESD-Sensitive Component. Avoid Pulling On Wiring; Inspect Connector Pins For Corrosion And Repair Wiring Loom Damage Prior To Installation. Use Proper Torque On Fasteners And Refit Any Protective Covers To Prevent Moisture Exposure. If The Original Cause Was Water Ingress Or Wiring Damage, Fix Those Issues Before Fitting The Replacement To Prevent Repeat Failure.

Installation And Coding – Important

• The Unit Is Used And Is Paired With The Original Vehicle (VIN/PIN/Keys).
• Possible Commissioning Options:
  1. Cloning Data From The Old Unit (EEPROM/Flash) – After Cloning The Unit Is Plug And Play.
  2. Virginization And Subsequent Initialization/Telecoding Via DiagBox (Or Online) + Key Adaptation.
• Recommended To Be Performed By A Technician With PSA Service Equipment (DiagBox/Lexia/PP2000).
• Always Disconnect The Battery Before Removal/Installation And Follow The Manufacturer Procedure To Avoid Damage To The Unit.

Notes For Buyers

Search Keywords: J34P ECU, Injection Control Unit, 9655883280, 9661978880, Peugeot 206 1.4 KFW. This Listing Shows The Unit Originating From A Peugeot 206 2006 1.4 55 kW. Ensure The Part Numbers Match The Unit Required For Your Vehicle And Plan For Professional Coding If Replacing A Paired Unit.

This Bosch ECU MEV17.4.2 (common part reference 0261S06620) is a direct-fit engine management unit used in Stellantis petrol engines 1.4 VTi. Ideal for professional workshops and experienced DIYers who search by part number (0261S06620, 9676379780, 9666319180, 1677637780, 1944C0, 1944C1). The unit controls fuel injection, ignition timing and other engine management tasks to ensure smooth running, optimal fuel consumption and emission control. Suitable for vehicles that mount this specific Bosch MEV17.4.2 calibration; always compare product codes before ordering.

Technical Information

• Manufacturer: Bosch
• Model(s): Citroën C4 II (B7) 1.4 VTi (Engine Code 8FP). Also fitted to compatible Citroën and Peugeot models using the MEV17.4.2 ECU—check product codes for exact match.
• Product Codes: 0261S06620, MEV17.4.2
• Other Numbers: 9676379780, 9666319180, 1677637780, 1944C0, 1944C1

Function

The ECU (Engine Control Unit) continuously monitors sensors (airflow, throttle position, coolant temperature, oxygen sensors, crankshaft/camshaft position) and controls fuel injectors, ignition timing and other actuators to maintain engine performance and emissions. It also communicates with the vehicle network (CAN) and immobiliser systems.

How To Replace

Replacement should be carried out by an experienced technician or a competent DIYer with the correct tools. General steps:

1. Disconnect the negative battery terminal and wait a few minutes to discharge residual power.
2. Locate the ECU (position varies by model—engine bay or under dashboard). Follow the vehicle service manual for access and removal instructions.
3. Unplug wiring harness connectors carefully, release any locking tabs, and remove mounting fasteners.
4. Install the replacement unit, secure fasteners to manufacturer torque values, and reconnect the wiring harness.
5. Perform required coding/initialisation (see Installation And Coding – Important below). After coding, verify engine starts and run diagnostic checks for fault codes.

Installation And Coding – Important

• Unit Is Used And Is “Paired” With The Original Vehicle (VIN/PIN/Keys).
• Options For Commissioning:
  1. Cloning Data From The Old Unit (EEPROM/Flash) – After Cloning The Unit Is Plug And Play.
  2. Virginisation 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 Removal/Installation Always Disconnect The Battery And Follow Manufacturer Procedures To Avoid Damaging The Unit.

Recommended To Install

Use anti-static precautions when handling the ECU. Ensure connectors and pins are clean and free of corrosion. If cloning, confirm successful read/write of EEPROM/Flash and verify immobiliser data. After installation, clear fault codes and perform a road test while monitoring live data. If you lack PSA diagnostic tools, ask an authorised service to perform the final coding steps to ensure correct immobiliser and engine functions.

Why This Part Most Often Fails

Common causes of ECU failure include water ingress, corrosion on connectors, thermal stress from repeated high engine bay temperatures, mechanical vibration causing solder joint fatigue, and electrical faults such as short circuits or poor grounding. Failures often present as engine misfires, non-start conditions, erratic idling, intermittent faults or multiple diagnostic trouble codes. In many cases the ECU electronics remain intact and the unit can be restored by software cloning or reprogramming; however, physical damage to the housing or PCB requires replacement.

Notes For Mechanics And DIYers

• Search By Part Number: Buyers frequently find this unit using references 0261S06620, 9676379780, 9666319180 or calibration labels (1944C0/1944C1, 1677637780).
• Diagnostics: Always perform a full fault code readout and record freeze-frame/fuel trims before replacing the ECU to avoid unnecessary part changes.
• Quality: This listing refers to the specific Bosch MEV17.4.2 calibration. Confirm code match prior to fitting.

Overview

This Bosch EDC15C2 engine control unit (ECU) is a direct-fit control module commonly found on Peugeot 406 2.0 HDi engines with RHZ engine code. Frequently referenced by part numbers 0281010363, 9641608080 and internal codes such as 1938S4, 1940N4 and 1940N6, this ECU manages fuel injection, turbocharging and engine sensors on early common‑rail HDi diesel engines. Ideal for professional workshops and competent DIY mechanics looking for a reliable replacement unit, the listing contains the most searched product codes to help fast identification during repairs.

Technical Information

• Manufacturer: Bosch
• Model: EDC15C2 / Fitment: Peugeot 406 2.0 HDi (RHZ)
• Product Codes: 0281010363
• Additional Numbers: 9641608080, 1938S4, 1940N4, 1940N6, 281010363

Function And Symptoms

The EDC15C2 ECU controls high‑pressure common‑rail fuel delivery, injection timing, boost management and processes inputs from crankshaft/cam sensors, MAP/boost sensors, temperature sensors and injector feedback. When faulty, typical symptoms include engine not starting, erratic idling, reduced power or limp‑home mode, increased fuel consumption and error codes related to injection control or communication faults on diagnostic readers.

Replacement Process

Replacement of the ECU should follow careful, step‑by‑step procedure: always disconnect the negative battery terminal before beginning work, de‑energize the vehicle and wait a few minutes to ensure capacitors discharge. Remove protective covers and unplug wiring harness connectors by releasing retaining clips, then unbolt the unit from its mounting bracket. Take care not to pull on wiring or damage connector pins. After physical installation, the unit will normally require data cloning or coding to match the vehicle immobiliser and engine parameters before full operation.

Installation And Coding – Important

• The unit is used and is “paired” with the original vehicle (VIN/PIN/keys).
• Options for commissioning:
1. Cloning data from the old unit (EEPROM/Flash) – after cloning the unit is plug and play.
2. 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).
• Before removal/installation always disconnect the battery and follow the manufacturer’s procedure to avoid damaging the unit.

Installation Recommendations

• Work In A Clean, Dry Area: Protect the ECU from moisture and contaminants during handling.
• Use Proper Tools: Avoid deforming connector locks; use small picks or plastic tools if needed.
• Handle Electronics Carefully: Do not open the ECU housing or touch exposed circuit boards.
• Grounding And Power Precautions: Ensure battery is disconnected and remain aware of possible stored energy in capacitors.
• Professional Coding: For full functionality and immobiliser matching, cloning or coding with PSA diagnostic tools is recommended.

Most Common Failure Causes

• Water Ingress And Corrosion: Moisture reaching connectors or housing leads to shorts and connector failures.
• Thermal Stress And Solder Joint Fatigue: Repeated heating and cooling cycles can cause cracked solder joints on the board.
• Electrical Surges And Poor Battery Connections: Voltage spikes, jump starts or bad grounds can damage internal components.
• Environmental Contaminants: Oil, dirt or chemical exposure accelerates degradation of connectors and seals.

Compatibility Notes

This ECU is commonly associated with Peugeot/Citroën HDi engines of the same generation and is frequently searched by the part numbers listed above. Always compare the product codes on your existing unit with the numbers shown in the Technical Information section to confirm correct match before installation.

This Siemens/Continental ECU (SID803A) is a direct-fit injection control unit commonly used on PSA HDi 2.0 engines. It carries original part numbers frequently searched by mechanics and DIYers, making it easy to find when diagnosing engine management faults. The unit controls fuel injection timing, quantity and interfaces with vehicle sensors and actuators to ensure proper running, fuel economy and emissions compliance.

Technical Information

• Manufacturer: Continental / Siemens VDO
• Model: Citroën C8 2.0 HDi (RHK) – 2007; Compatible With Peugeot 807 2.0 HDi Applications
• Product Codes: SID803A, 5WS40611B-T
• Other Numbers: 9661642180, 9664610980, 1942JF

Function And Typical Symptoms

The ECU Is Responsible For Controlling Injection Timing, Injector Pulse Width, Turbo/Boost Management Interfaces And Communicating With ABS/Immobilizer And Instrument Cluster. When The Unit Malfunctions, The Engine Control Strategy Can Be Lost Or Compromised.

• Engine Does Not Start Or Cranks Without Firing
• Intermittent Stalling, Rough Idle Or Misfires
• Persistent Engine Management Warning Light (MIL) Or Fault Codes Related To Injection Or Communication Errors
• Poor Fuel Economy Or Loss Of Power

Replacement And Installation

Replacing The ECU Requires Careful Handling And Some Diagnostic Steps To Restore Full Functionality:

• Disconnect The Negative Battery Terminal Before Starting To Avoid Damage From Short Circuits.
• Locate The ECU (Position Can Vary By Model; Common Locations Include Engine Bay Or Behind The Passenger Dash/Glovebox Area).
• Remove Protective Covers And Unplug All Wiring Connectors Carefully—Do Not Pull On Wires.
• Unscrew Mounting Bolts, Replace Unit And Refit Fasteners To The Correct Torque.
• Reconnect Battery, Clear Stored Fault Codes With A Diagnostic Tool And Verify Engine Starts And Runs Correctly.
• Note: On PSA Vehicles, Immobilizer Pairing/Coding Or ECU Configuration May Be Required Using A Suitable Diagnostic Interface To Match The Unit With The Vehicle’s Security System.

Installation Recommendations

• Work In A Dry, Clean Environment To Prevent Contamination; Avoid Moisture Exposure During Installation.
• Use Proper Torque Settings For Mounting Bolts And Ensure Connectors Are Fully Seated And Locked.
• Perform A Full System Scan After Installation To Clear Historical Codes And Confirm No New Faults Remain.
• If Immobilizer Or Coding Is Needed, Use Manufacturer-Compatible Diagnostic Equipment Or A Specialist Workshop To Avoid Immobilization Issues.

Why This Part Fails Most Often

Common Failure Causes Include Environmental Damage (Water Ingress, Corrosion), Thermal Stress And Age-Related Component Degradation. Voltage Spikes Or Poor Battery/Charging System Condition Can Also Damage Internal Electronics Or Lead To Intermittent Faults. Solder Joint Failures And Cracked Printed Circuit Boards Are Known Modes Of Failure In ECU Families Of This Era.

Fitment Examples

• Citroën C8 2.0 HDi (Engine Code RHK) – 2007 Example Fitment
• Peugeot 807 2.0 HDi – Selected Variants With SID803A ECU

By Matching The Unit’s Part Numbers (SID803A, 5WS40611B-T, 9661642180, 9664610980, 1942JF) You Can Quickly Identify Compatibility During Diagnosis Or Parts Sourcing. This ECU Is Suited For Professional Garages And Experienced DIYers Who Understand The Need For Correct Handling, Electrical Precautions And Potential Coding Steps After Replacement.

This Bosch ME7.4.4 Engine Control Unit (ECU) is designed for vehicles equipped with the NFU 1.6 16V petrol engine and is commonly used on Peugeot 307 models. The unit manages fuel injection, ignition timing and engine diagnostics to ensure smooth running, efficient fuel consumption and compliance with emission control strategies. Ideal for professional garages and competent DIY mechanics who need an OE-compatible control unit identified by part numbers such as 0261207474 or 9650346080.

Technical Information

• Manufacturer: Bosch
• Model: ME7.4.4 NFU
• Product Codes: 0261207474, 261207474
• Additional Numbers: 9650346080, 1942E4, 1940V8, NFP, ME7.4.4

Compatibility And Application

Primarily fitted to Peugeot 307 1.6 16V with engine code NFU (80 kW). The same ECU platform can be found across related Stellantis petrol engines; always verify the engine code stamped on the engine or printed on the original ECU label when selecting a replacement.

Installation Recommendations

• Prepare: Park on a flat surface, switch off ignition and remove the key. Disconnect the negative battery terminal and allow the vehicle to sit for a few minutes to remove residual voltage.
• Access: Remove necessary trim and ECU cover to access the control unit. Handle connectors carefully—do not bend pins or force plugs.
• Replacement: Unbolt the ECU from its mount, unplug all electrical connectors and install the replacement unit in reverse order. Ensure connectors seat fully and locking tabs engage.
• Programming: After physical replacement the ECU will typically require software flashing/coding and immobilizer pairing or adaptation using appropriate diagnostic equipment. Reprogramming must be performed by a workshop with suitable Bosch/PSA tools or diagnostics capable of writing the correct firmware and immobilizer data.
• Safety: Observe electrostatic discharge (ESD) precautions. Avoid working in wet conditions and keep the ECU and connectors clean and dry.

Why This Part Commonly Fails

Engine control units are designed for long service life, but failures can occur due to external stresses rather than simple wear. The most frequent causes include water ingress or corrosion (from leaks or condensation), thermal cycling that stresses solder joints, voltage spikes from poor electrical connections or jump-starting, and damage from contaminated connectors. Faulty sensors, short circuits or persistent electrical faults elsewhere in the vehicle can also overload the ECU and lead to failure. Symptoms of a failing ME7.4.4 ECU include engine running irregularly, frequent limp-home mode, failure to start, random fault codes and poor fuel economy.

Why Choose This Unit

For mechanics seeking an ECU replacement that matches original Bosch specifications, this ME7.4.4 unit carries the familiar PSA part numbers and is suitable for workshops and experienced DIYers who can handle programming. Using the correct part number (e.g., 0261207474 / 9650346080) improves the chance of direct compatibility with the vehicle wiring and sensor set.

This genuine Delphi Engine Control Unit (ECU) is a direct-fit replacement for 1.4 HDi diesel applications used on select Citroën and Peugeot models. Supplied with the well-known part numbers 9654305580, 1940VH and 1940VJ, the module suits workshop professionals and experienced DIY mechanics looking for a reliable engine management control unit. The unit controls fuel injection timing, quantity and injection sequencing to ensure efficient combustion, stable idling and correct operation of emissions-related systems.

Technical Information

• Manufacturer: Delphi
• Model: 1.4 HDi 66 kW
• Product Codes: 9654305580, 1940VH, 1940VJ
• Other Numbers: 1940VJ, NFP (as referenced in supply notes)

Applications

Commonly fitted to: Citroën C3 (1.4 HDi) and compatible Peugeot 1.4 HDi variants such as Peugeot 1007 where the listed part numbers apply. Use the part numbers above when searching or cross-referencing to confirm fitment for specific model years and engine variants.

Symptoms Indicating ECU Fault

When this control unit degrades or fails, typical symptoms include intermittent or permanent engine no-start, stalling, rough or irregular idling, loss of power, sudden limp-home mode activation and persistent engine management warning lamp (MIL). Fault codes related to injection control, communication errors on the CAN bus or sensor/actuator plausibility faults are common diagnostic clues.

Why This Part Fails

ECUs of this type most often fail due to moisture ingress and corrosion of connectors or internal circuitry, thermal stress from prolonged heat exposure, voltage spikes or short circuits in the vehicle electrical system, and physical damage. Poorly secured wiring or water ingress after engine bay cleaning and coolant leaks can accelerate failure.

Replacement And Installation Recommendations

Replacement is straightforward for a trained technician but requires careful procedure:

• Disconnect the negative battery terminal before starting work to prevent electrical damage.
• Locate and remove necessary trim or covers to access the ECU; note the position and orientation of the unit and retain fasteners.
• Carefully unplug all electrical connectors using appropriate release tabs—do not pull on wiring.
• Unbolt the ECU from its bracket and install the replacement in the correct orientation. Reconnect connectors and secure fasteners to the manufacturer’s torque recommendations.
• After mechanical installation, ECU replacement typically requires professional programming/coding to match vehicle immobiliser and engine parameters. Use suitable diagnostic equipment to perform adaptation and to clear/verify fault codes.

Maintenance Tips

Protect connectors with dielectric grease after fitting where appropriate, ensure wiring looms are routed away from heat sources and moving parts, and keep the engine bay free from persistent moisture to prolong ECU life. Regularly inspect connectors for corrosion or looseness during scheduled maintenance.

Part numbers and model references are provided to facilitate fast identification in search engines and parts catalogs—entering codes such as 9654305580, 1940VH or 1940VJ in your parts search will help locate the correct ECU for 1.4 HDi applications.