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.
To tell you to read the diagnostic codes.
How to read check engine codes on a 1999 chev 1500 suburban.
That's the computer's way of telling you that something is wrong and it wants you to read the diagnostic code.
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..
no
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.
You need to have a diagnostic meter to read the codes, then book to tell you what they mean.