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Old 12-07-2003, 07:03 PM   #1
a1cchad
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hunter green

Default Is my car OBD II?

I've always heard or read that the 95 and older subarus were obd II. In my Chiltons manual for 85-96 subarus it says that 95s and 96s are OBD II, is this true or is my generic manual giving me the wrong information? I have read before and thought that my 95 Impreza would be good for a motor swap since i don't have OBD II and would not have to have the OBD II emissions test. I don't know how to tell what obd my car is but i have the 2 or 3 diagnostic plugs under my steering column, does this mean anything? I would appreciate it if someone could clear this matter up for me. thanks.
chad

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Old 12-07-2003, 07:04 PM   #2
AjIsDope
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1995-1996 models were really a hybrid of OBD I & II. This is when the manufacturers were making the transition to the new computer system.
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Old 12-07-2003, 07:40 PM   #3
Kevin Thomas
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Question Well

Isn't one way of knowing this for sure is by looking at your exhaust? I thought that OBDI cars only had one oxygen sensor while OBDII cars had one before and after the cat.
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Old 12-07-2003, 07:53 PM   #4
AjIsDope
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Good point. You are correct. OBD II required the use of two 02's, pre and post cat. This won't really help this guy though since his car is in the hybrid area. :-/
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Old 12-07-2003, 07:56 PM   #5
a1cchad
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I was jacking with my plugs and such and unplugged the air bag to get a CEL. When i connect one of the 2 different plugs, i get codes thrown on the CEL. I think my car is OBD I since i can get the codes without needing some sort of diagnostic tool but i'll check out the O2 sensors tomorrow and see how many i have.
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Old 12-07-2003, 08:07 PM   #6
AjIsDope
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NEVER MESS WITH THE AIRBAG ELECTRONICS!!!!!!

That is the first thing they teach you in Automotive Electronics class. The bag may go off accidently. Very costly and dangerous.
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Old 12-07-2003, 09:03 PM   #7
Kevin Thomas
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Quote:
Originally posted by a1cchad
I was jacking with my plugs and such and unplugged the air bag to get a CEL. When i connect one of the 2 different plugs, i get codes thrown on the CEL. I think my car is OBD I since i can get the codes without needing some sort of diagnostic tool but i'll check out the O2 sensors tomorrow and see how many i have.

You are correct! I couldn't think of how to word what you said but you hit it dead on. You can't use a scan tool on OBD I cars as far as I know. You have to read the codes on the ECU itself, like the number of fast flashes and the number of slow flashes giving you a number (like '2' and '4') to look up.
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Old 12-07-2003, 09:16 PM   #8
AjIsDope
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Yeah what he said. ^^^
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Old 12-07-2003, 11:49 PM   #9
no-coast-punk
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The easiest way to see if your car is OBD2 is look at the diagnostics connector. OBD 1 connectors vary by the make of the car. However OBD2 connectors look like
_________
/ - - - - - - - - \
/___________\

so if you have the trapezoid looking thing, then your car is OBD2. To my knowledge there was never an OBD1 computer hooked up to an OBD2 connector in any car

*edit* well... the formatting won't work for my little asci art bit... but if your connector looks like a trapezoid, it's OBD2

*another edit* I used to drive one of the cars that was a hybrid year (a '95 GMC) even though it was a '95 it was still OBD2 compliant and talked to scan tools with no problems. So you can't really go by the year, and some OBD2 computers can have simple codes pulled by grounding a certain pin in the connector (in GM vehicles it was pin 1) and watching the parking/dash lights flash. The reason for this was alot of people bitched about needing expensive hardware to pull codes. I don't know if subarus can pull codes the ghetto way, but being that subaru is a subsidiary of GM it wouldn't suprise me
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Old 12-08-2003, 12:02 AM   #10
Hawk296
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THe easiest way to tell is by popping the hood. there is a label on teh bottom side of the hood that says OBDI or OBDII and has a schematic.

I belive newer 95s and all of 96 were OBDII. my 95 is OBD I and you can pull the codes by connecting two of the connectors under the dash, connect the other one and it clears them. I think there is also an adapter for the select monitor to read the OBDI cars.

Last edited by Hawk296; 12-08-2003 at 02:32 AM.
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Old 12-08-2003, 01:19 AM   #11
Kostamojen
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Mine is OBD I then yours is OBD I
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Old 12-08-2003, 02:34 AM   #12
Hawk296
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A1cchad- is yours a coupe? just wondering.
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Old 12-08-2003, 04:32 PM   #13
a1cchad
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Default

yes mine is a coupe. The hood thing doesn't help me cause i bought the car with a carbon fiber rs hood already on it and didn't recieve the stock one. I do have the 2 connectors that you connect to get a code and the other one clears the code so i guess the mystery is solved and i have and OBD I car. Thanks guys.
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Old 12-08-2003, 05:06 PM   #14
Hawk296
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Baja

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haha was just wondering cause that means you, kostamojen and myself have the same car.
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Old 12-08-2003, 06:02 PM   #15
a1cchad
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Talking

I never thought there would be so many hunter green coupes in one thread!
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Old 12-09-2003, 02:58 AM   #16
Kostamojen
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I know, isnt it wierd? LOL!
Attached Images
File Type: gif drift2.gif (17.9 KB, 94 views)
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Old 12-11-2003, 11:37 AM   #17
anders8
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Default From the factory manual

I have a 1995 Impreza, so I'll tell ya. All this info is for 1995 ONLY.

There weren't any really "hybrid" things that year. What happened is this:

The 1.8L engines were ODB1. The 2.2L engines were ODB2.

They only shipped the 2.2L engines with automatics that year.

So if you have a 1995 and it's a stick, you have ODB1.

Even though the 1995 2.2L was ODB2 compliant (and will work with scan tools and such) they will still inspect it as a ODB1 for emmisions (since it's a 95). So, still a sniffer, no plug in.

Cheers,
Anders
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Old 12-11-2003, 08:43 PM   #18
Boxologist
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hello fellow green 95 L people.
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