LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums - Reply to Topic
Thread: 1994 trouble code reading problem Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:

Register Now

In order to be able to post messages on the LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
07-16-2018 07:46 AM
cocobolo95 You should start with the fact that your 95, even though it has a 16 pin obd 2 connector, it is a obd 1 computer system.

To read your computer you will need an obd 1 scanner. The auto parts stores only read obd 2, which is 96 & newer.

You moght also want to start your own thread with your future problems. You've resurrected a 11 year old thread here.

The best obd 1 scanner I know of is the free pc based scan program called "scan9495". It was written primarily for 93-95 f-bodies but will work on your b-body also. It scans for regular codes, ABS, & SIR codes. It does running sensor scans & logs data to file for later playback. It also tests engine & auto trans actuators. Get it at
My Files

You will also need Microsoft dot net framework. It is available at same site as scan9495. It's in it's own folder. Also get newest version of scan9495 in the lt1-v8 folder,

You will need to buy a obd 1 cable to connect cat's aldl to usb port of pc computer. Get at OBD Diagnostics
07-15-2018 02:55 PM
rmck641 hello, on a 1995 chevy Impala I too have a similar problem. The local O'Reily's scan tool will not link to the car. At the same time I also noticed that the installed Scanmaaster doesn't stay on where should I start
08-09-2007 10:32 PM
Jesse Lackman I drove it a few miles a couple days ago and the check engine light went off. Weird. It was still missing under load, I'm suspecting it to be spark related.
08-06-2007 04:03 PM
VinceTrifecta Correct, on the 94-95 LT1 you need to have an OBD1 code scanner.
07-30-2007 06:53 PM
Jesse Lackman
1994 trouble code reading problem

I'm trying to read the trouble codes using a jumper in A and B in the 12 pin. When I turn the key to ignition the fans start and the service engine light does not flash.

Seems like maybe this method might not work with some 94s?


Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

For the best viewing experience please update your browser to Google Chrome