First you remove the cover from the diagnostic port under the driver's side of the dashboard. Then you plug the datalink cable from your scan tool into the diagnostic port. The scan tool will then show the diagnostic codes. Write them down and read a manual to see what has gone wrong.
how to reset check engine light on 1992 Mazda mpv
When the light comes on it's telling you to read the engine diagnostic codes.
To read diagnostic codes on a 1990 Nissan 300ZX, first, locate the diagnostic connector under the driver's side dashboard. Use a jumper wire to connect terminals E1 and TE1 in the connector. Then, turn the ignition key to the "on" position without starting the engine; the check engine light will blink the diagnostic codes. Count the blinks to interpret the codes according to the Nissan service manual for troubleshooting.
It is the port, where a diagnostic machine can be hooked up. The diagnostic will read codes from your vehicles computer. For instance if your check engine light comes on, you can plug the diagnostic machine into the data port and it will tell you why the check engine light came on so that you can get it fixed.
To tell you to read the diagnostic codes.
read my answer to reseting engine codes below...2001 olds silhouette..
Diagnostic codes are generated by your on-board computer. They tell you what problems the computer has identified with your engine. The codes are numbers. The code numbers are read by an instrument that plugs into a special jack under the dash. Auto parts stores often will check your diagnostic codes for free, or you can have your dealer do it.
U check the codez
Check engine light codes, known as Diagnostic Trouble Codes (DTCs), are alphanumeric codes generated by a vehicle's onboard diagnostic system when it detects an issue. These codes can indicate a wide range of problems, from minor issues like a loose gas cap to more serious engine or emissions system failures. To read these codes, a mechanic or vehicle owner typically uses an OBD-II scanner. Understanding the specific code can help diagnose and address the underlying problem effectively.
One can read the check engine codes without hiring a professional by checking the car manual. All car manuals describe how to read the codes for that car.
Hey DJ==No. Go to your local Auto Zone and they will read thm for free. GoodluckJoe
How to read check engine codes on a 1999 chev 1500 suburban.