Description
The Siemens SID 803 Engine Control Unit (ECU) is designed for optimal performance in Citroën and Peugeot vehicles, specifically noted for its application in the Peugeot 307 2.0 HDI RHR. This ECU controls fuel injection and engine management systems, ensuring efficiency and compliance with emission standards.
One of the key functions of the Siemens SID 803 is to monitor and adjust the fuel-air mixture according to the engine’s operating conditions. A common point of failure for this unit can occur due to electrical issues or software malfunctions, often requiring timely replacement to prevent engine performance degradation.
Replacing the ECU typically involves disconnecting the battery, removing the old unit, and installing the new one with proper alignment and connection. It is advisable to clear fault codes and reprogram the ECU using diagnostic tools after installation to ensure compatibility with the vehicle’s systems.
Technical Information
- Manufacturer: Siemens
- Model: SID 803
- Product Codes: 5WS40029G-T, 9655041480, 9655051880
- Additional Numbers: 1942PP, NFP
