Where is the diagnostic port of Citroen C4?

1 Answers
LeAmir
07/24/25 3:11am
Citroen C4's OBD diagnostic port is located behind the trim panel under the steering wheel. You can see the OBD interface by opening the trim panel. OBD is the abbreviation of On-Board-Diagnostics, which is translated as "On-board Automatic Diagnostic System" in Chinese. This system monitors whether the vehicle's emissions exceed the standard at any time from the engine's operating conditions, and will issue a warning immediately if it exceeds the standard. Here is more information about OBD: 1. Through OBD, you can read many professional data such as throttle opening, air-fuel ratio, accelerator and brake pedal opening, read fault codes, and quickly find the fault point. 2. OBD can analyze the faults of electronic components in the engine electronic control system through data calculation.
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