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Generic code reader will only read codes of faults that will or could affect exhaust emissions though many inexpensive code readers will usefully also allow the viewing of live data.
Sometimes knowing what a fault isn't is quite useful...
I heard from a colleague that Jeep electronics aren't easy to read and dealer level diagnostic equipment is sometimes necessary.
What you trying to read different systems require different readers. Abs one type, SRS another type and obd another. Make sure your ignition is turned to run but not start. I have several scanners and scan lots of vehicles. Get back to me if you need more help
There are different procedures for accessing the data link for reading codes. The cable for one vehicle will be different to another vehicle . Check the code reading specifications to switch on the link
Check to make sure that the fuse to the cigarette lighter is not blown or that something like a penny has not found its way in there and shorted out the fuse. Check all the fuses because it will throw the diagnostic tool off if they are blown. *** Please rate me on this answer.***
Does the code reader power up? If not, check the fuses. OBD II ports supply power to the code reader. Typically GM uses the cigarette lighter fuse to power the OBD II port on their vehicles (could share a fuse with somthing else, but I doubt it). Good luck!
Low oxygen has nothing to do with the ABS. That is something to do with the PCM. You will need to take it to the dealer with the correct scan tool to read the stored ABS codes.
if the check engine light is on that is the only time you need the code reader if your not getting any you may have a basic problem are you turning the key on to read the codes?
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