5WS40030B-T – Used Parts Vendor https://www.usedpartsvendor.com Citroën Peugeot spare parts Sun, 12 Apr 2026 20:42:58 +0000 en-GB hourly 1 https://wordpress.org/?v=7.0 ECU Siemens SID 801 5WS40030B-T 9644302380 1938LC https://www.usedpartsvendor.com/electro-components/control-units/dir-unit-injection/ecu-siemens-sid-801-5ws40030b-t-9644302380-1938lc-2/ Fri, 28 Mar 2025 03:09:02 +0000 https://www.usedpartsvendor.com/uncategorized/ecu-siemens-sid-801-5ws40030b-t-9644302380-1938lc-2/ The Siemens ECU SID 801 5WS40030B-T is a critical component for managing the engine performance of Citroën and Peugeot vehicles, specifically compatible with models such as the Peugeot 307 2.0 HDI. This unit ensures optimal fuel injection and engine efficiency, providing 66 kW of power.

Replacing the ECU is essential when you experience engine malfunctions such as poor fuel efficiency, rough idling, or failure to start. The ECU can fail due to electrical issues, software malfunctions, or wear and tear over time, necessitating its replacement to restore vehicle performance.

Technical Information:

  • Manufacturer: Siemens
  • Model: SID 801
  • Product Codes: 5WS40030B-T, 9644302380
  • Additional Numbers: 9646449280, 1938LC
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