While the port is standardised, several communication protocols remain possible depending on the manufacturers. PS: It should be noted that the remaining pins may be used by the manufacturer as needed. Front view of the vehicle connector here a Dacia Logan. If you cannot find your diagnostic connector, go to our page location of OBD connectors to help you locate it. Usually it is located under the steering wheel in the fuse box or under the ashtray near the handbrake. The directive states that the connector must be placed inside the passenger compartment. Depending on the faults, there are several possible modes of operation. This indicator is used to signal a problem in the vehicle's pollution control system. Opposite are some examples on various vehicle models. Euro 3 and its directive announced the arrival of a new indicator on vehicle dashboards. It depends on how much manufacturers are in advance of the new directive and their willingness to implement the standard. Some vehicles not covered by the directive may nevertheless be compatible. It states that emission failures must be signalled by means of an indicator on the dashboard and that the codes corresponding to the detected failures must be recorded by the vehicle.

The OBD states that a vehicle should permanently monitor the smooth operation of the engine throughout its life. The arrival of electronic computers to manage the engine and associated computers enabled vehicles to reduce their pollutants.

Obdwiz professional add on