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How do you read the OBD codes on a 95 Cavailer

01-14-2006, 12:18 PM
I have a 95 Cavalier 2.2 l 134 code 4 OHV with 16 pin Diagnostic connector for OBD2. I keep getting a check Engine light. I took the Car to AutoZone and their scanner could not read the trouble codes. The 95 is supposed to have a earlly verion of the OBD 2. On my 16 pin connector there are 5 pins used. The #2 slot , the # 4 and 5 pins and the #9 + 16 slot. Does anybody know if these pins can be jumped like the OBD1 pins on early models, and what pins would they be. Or IS there a scanner on the market that will read it. I havent been able to find one at any parts store.

I would appreciate your help.

my picutesfile:///C:/Documents%20and%20Settings/Bill/My%20Documents/My%20Pictures/ODB%202%20Dianostic%20connwector.gif

01-14-2006, 12:28 PM

This page shows the connector and what the pin designations are for.

01-14-2006, 04:28 PM
That page shows the 96-up OBDII connector.Cavalier 2.2s for 1994-1995 used a strange hybrid of the OBDI(1982-1995 ALDL) system,and an early forerunner of the 96-up OBDII universal system.I have not found a scanner that can access these cars (AutoXray,Actron,nobody lists this application).I am of the belief that only GM or maybe Snap On or OTC has scanners for this short run of vehicles....however you either spend thousands to buy a professional scanner,or keep going back to the dealer (and hopefully they never throw away their 1994-1995 code scanners).

01-15-2006, 07:52 AM
Thanks for the info, that's what I found out, that theres no OTC scanner that will read the modified OBD2 on the 95. I guess I'll just have to take it to a dealer and see if they can read the codes. Thanks for your imput.

05-19-2006, 05:39 PM
I have a 1995 Chevy Cavalier with OBDI and OBDII and i use an Actron Super Scanner works fine can get codes and read engine data.

05-20-2006, 08:58 AM
Some 1994 and 1995 GM cars are the early OBD II.Only ones the I know are the early OBD II 1994 and 1995 are Buick Lesabres,Riveras and Park Avenues,Oldsmobile 98s and delta 88s.The Cavallier is one too.

05-21-2006, 05:18 PM
No what i mean is, my 95 has a n OBDI with an OBDII hook up. It must have been one of the last 95,s with OBDI and they put an OBDII hook up inside the car. Sorry should have specified that.
dirt420ba-Be Safe!!!!!

05-24-2006, 08:10 AM
My 94 Cavailer RS 2.2 was built in Feb of 1994 and my Actron OBD 1 scanner works. It wasnt much longer after this that it swithes to OBD2. I am looking at my Actron Application and it supports the 2.2L between 1990-1995. The 2.0L is 1984-1989, 2.3 OHC is 1995, 2.8 is 1985-1989, and the 3.1 supports 1990-1994.
Dont know if this helps.... Tom :banghead:

05-26-2006, 11:26 PM
well, i have a 95 z24 2.3l dohc, and i have used a variety of obd2 readers and they all worked. are you sure you dont have obd2??? i mean autozone's crap usually doesnt work right.. like that time i took my ignition control module to be tested... they said it was completely dead cause their machine said so.. but there was nothing wrong with it (but i kinda knew that already so that sure wasted some of your time hrrmmmm)

dude, if you have any 95, then it's obd2. you probably either have a short somewhere or a loose wire.

btw, my dad has a 2001 silverado se and his is obd2 but has problems reading codes... but it's still obd2...

Current Resident
05-28-2006, 07:50 PM
the snap on 2500 scanner also works

06-08-2006, 09:17 PM
Most 95's are OBD1 unless the underhood sticker specifically says OBD2 Compliant. OBD2 became standard in 1996. Autoxray has a special cable for use on 94-95 OBD1 GM cars with the OBD2 connector for use with their scanners. You could also take a look at this page...

06-09-2006, 08:58 AM
The new Snap On scan tools are junk,I here nothing but problems with them and have to be sent in for repairs.Snap On went to a new technology on their scan tools,they work and quit the next time being used.Vetronix is the best one on the market,they are ahead of everyone on the CAN network.They also make GM's factory scan tool,Tech 2

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