Can't read codes any ideas?
 

car is 97 trans am

The plug that is under the dash that you use the scan tool on. It does not seem to be sending any signal. Any ideas?

Someone installed aftermarket radio and some stupid under dash lights if that makes a difference.

is the check engine light on?

it may be that you are using the wrong code reader. there are 2 types (dont remember the names) but one works on the older LT1's and another works on the new LT1's

obd1 obd2

OBD 2 in a 1997 trans am.

yes the check engine light is on.

tha thing is I ran it through a scan tool myself and came up with no readings, So I took it to a friend who runs a mechanic repair shop, he had his scan tool - punched in the information (97, trans am, manual trans, etc) and his didn't come up with a reading either. What he thought was that it wasn't sending a signal out the plug.

z28fan..check the fuse that says "cig lighter"...the port where the handheld scan tool runs off the same fuse....my 97 T/A had a blown fuse and the scan tool would not read it.

Good luck

Good idea- I don't think the lighters work either.

Be right back going into garage to check it.

Ok the fuse looks like it was blown, Now I have to see if I can get ahold of my parents to borrow the scanning tool.

Thanks for the info -

You know this forum is really great, lots of information and very helpful people providing it.

good luck, the board helped me find out about the fuse too..good to pass the info along.

Thats the exact same problem my Cavalier had. I went to read the codes, and there was nothing. Turns out the Cigarette lighter and OBD port use the sae fuse, so I replaced it and problem solved :)

It works.

Except now it reads


PO441

Evap Emissons Control - Purge flow fault

What does this mean, is it serious? What do I have to do to fix it?