Professional diagnositic tools most likely under the driver's side dash.

The best way to Get Check Engine Light Codes 1Locate the diagnostic link connector within the car. Automobiles manufactured with OBD (prior to 1996) will possess the connector in the engine compartment (with all the word "diagnostics" stamped on the cover). Refer towards the owner's manual for the correct place. OBD diagnostic connectors were manufactured differently by various providers, so to connect towards the hyperlink would demand a plug specific for that make. OBD II automobiles (1996 and up) will have the DLCs situated inside the cabin of your automobile, most likely under the driver's side dash.

There is certainly no universal position to location the DLC under the dashboard, and some makers, like Honda, placed them behind the ashtray. Again, refer for the owner's manual for the appropriate location. OBD II DLCs are all universally shaped, which indicates any OBD II code reader or scan tool can plug into it no matter what organization manufactured the car.2Plug the code reader into the DLC from the car. For OBD II, locate the correct adapter to plug in to the diagnostic hyperlink and then plug the adapter in to the scan tool.3Turn the ignition essential two clicks inside the ignition. This must be the accessory position (also known as key-on/engine-off) which gives power towards the electrical technique with out the engine operating.

4Follow the directions on the scan tool or code reader. Every single device might ask for information including particular car identification numbers and engine size. Enter the info by scrolling by means of the alternatives and pressing the "Enter" crucial on the face with the scan tool or code reader. Most new code readers for OBD II will jump correct to reading and DTCs as the code reader obtains all the information it needs basically by plugging into the DLC and communicating with all the vehicle.5Write down the difficulty code displayed by the scan tool or code reader and refer to a trouble code chart (precise automobile repair manuals typically have difficulty code charts) to establish the problem. As pointed out earlier, OBD diagnostics don't generally pinpoint a distinct dilemma car diagnostic tool, which can be why OBD II was implemented Professional diagnositic tools. But even some OBD II difficulty codes can call for some troubleshooting and thorough diagnosing to figure out the reason for the DTC.