Where is the OBD port on Citroen C5?

1 Answers
McBradley
07/30/25 5:52am
Citroen C5 OBD interface: Under the ashtray next to the cigarette lighter, you can see it by pulling out the tray. Here is some relevant information: 1. OBD is the abbreviation for On-Board-Diagnostic in English, which translates to "On-board Diagnostic System" in Chinese. This system continuously monitors the engine's operating conditions and the working status of the exhaust after-treatment system. Once it detects a situation that may cause emissions to exceed standards, it will immediately issue a warning. 2. When a fault occurs in the system, the malfunction indicator lamp (MIL) or Check Engine warning light will illuminate, and the OBD system will store the fault information in the memory. Relevant information can be read in the form of fault codes through standard diagnostic tools and interfaces. Based on the fault codes, maintenance personnel can quickly and accurately determine the nature and location of the fault. 3. The difference between OBD-II and all previous on-board diagnostic systems is its strict focus on emissions. Its essential function is to monitor vehicle emissions by observing the car's power and emission control systems. 4. When a fault occurs in the vehicle's power or emission control system that may cause the levels of carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx), or fuel evaporation pollution to exceed the set standards, the fault light will illuminate to alert the driver.
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