To read diagnostic codes on a Ford Escape, you can use an OBD-II scanner, which connects to the vehicle's diagnostic port typically located under the dashboard near the steering column. Once connected, turn on the ignition without starting the engine, and follow the scanner's instructions to retrieve the codes. Alternatively, if you don't have a scanner, you can perform a "key-on, key-off" cycle three times, which may trigger the codes to display on the dashboard if the vehicle is equipped with this feature. Always consult your owner’s manual for specific instructions related to your model year.
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You can use the Equus 3030 Innova Diagnostic Code Reader to read the codes on an innova 3030.
dash diagnostic lights
Take it to Auto Zone and they will read them free.
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.
read my answer to reseting engine codes below...2001 olds silhouette..
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.
Reading diagnostic codes is easy. The driver plugs the reader/scanner into the diagnostic port of the vehicle, and the scanner/reader will give a code if there is a problem, and tell them the type of problem.
In a 1995 Ford Ranger, the diagnostic scanner port is located under the dashboard on the driver's side, typically near the steering column. You may need to remove a cover or panel to access it. The port is usually a 16-pin connector, which is used for connecting a diagnostic tool to read trouble codes.
Diagnostic equipment is needed to read codes on a 92 Golf. DLC is located in dashboard beneath heater controls.
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.