Description
Original Bosch ME7.4.4 engine control unit (ECU) designed for PSA 1.6 16V NFU (TU5JP4) petrol engines. This unit carries key part numbers 0261206606, 9651396380, 194063 and 194064 and was removed from a Citroën Xsara 1.6 16V 80 kW. Suitable as a direct replacement when hardware and software identifiers match the vehicle’s original ECU.
The ME7.4.4 ECU controls fuel injection, ignition timing, throttle valve operation, lambda regulation and various engine actuators. Installed correctly and matched to vehicle immobilizer and configuration, it restores precise engine management, helping to eliminate misfires, poor idle and drivability faults associated with a failing control unit.
Installation And Commissioning
Before removal always disconnect the negative battery terminal. After physical replacement the ECU must be paired with the vehicle immobilizer (BSI) and telecoded according to the car’s equipment using diagnostic tools such as Lexia/PP2000/DiagBox. As an alternative, EEPROM/flash transfer from the original ECU can preserve immobilizer codes and configuration. Without proper adaptation the engine may not start.
Common Fault Symptoms And Causes
Typical symptoms of a failing ME7.4.4 on NFU engines include intermittent stalling, ignition cuts, uneven idle, communication errors on the diagnostic bus or total no-start. Frequent causes are vibration damage, moisture ingress in the engine bay and electrical over-voltage. When replacing the unit, inspect power and ground harnesses, ignition coil(s), relays and fuses to prevent repeat failures.
Technical Information
- Manufacturer: Bosch (ME7.4.4)
- Model: PSA 1.6 16V NFU (TU5JP4); removed from Citroën Xsara 1.6 16V 80 kW
- Product Codes: 0261206606, 9651396380, 194063, 194064
- Other Numbers: 9638765980, 0 261 206 606
Compatibility is governed primarily by the ECU’s hardware and software labels. Common fitment includes Citroën Xsara, C2, C3, Berlingo and Peugeot 206, 307, Partner with the NFU (TU5JP4) 1.6 16V engine. Always compare the part numbers and label information on this unit with your original ECU and consult diagnostic outputs if unsure. Correct selection and configuration will restore full fuel injection and ignition control to NFU engines.
