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OBD I or OBD II ???

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Old 12-02-12, 08:12 AM
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fordor
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Default OBD I or OBD II ???

I have a 1996 Lexus ES300. I took it to Autozone because I had the CEL on. The girl said it was an OBD I because the diagnostics port wasn't on the right side of the steering wheel(she couldn't find the port). I later found the diagnostics port on the left side under the dash. The port had a cover over it and is somewhat oval in shape. I read somewhere here that 1994 was the year they changed to OBD II. Is this correct??? Is it a OBD I or OBD II?

Can you tell from the VIN # what month the car was built? If so how?

Thanks,

Bob L.
Old 12-02-12, 08:25 AM
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PFB
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Your car is definitelhy OBD 2.

OBD2 became mandatory on all 1996 and up vehicles sold in North America. I believe however that Lexus had it even in the 95 model.

Phill
Old 12-02-12, 09:36 AM
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canucklehe
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I have a 93 es300. can all the same info be retrieved from an OBDI scanner? will an OBDII scanner do BOTH ?
Old 12-02-12, 09:22 PM
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CUMan
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Originally Posted by fordor
I have a 1996 Lexus ES300. I took it to Autozone because I had the CEL on. The girl said it was an OBD I because the diagnostics port wasn't on the right side of the steering wheel(she couldn't find the port). I later found the diagnostics port on the left side under the dash. The port had a cover over it and is somewhat oval in shape. I read somewhere here that 1994 was the year they changed to OBD II. Is this correct??? Is it a OBD I or OBD II?

Can you tell from the VIN # what month the car was built? If so how?

Thanks,

Bob L.
The OBDII port on my 94 ES is located inside the fuse box in the lower left side of the dash. I don't know about the location on the 96 model, but it may be in the same place. Remove the fuse box cover, and look just to the right of the columns of fuses.

The is another port under the dash on my 94, but that serves some other purpose. The OBDII code reader will not fit in that port.

The first ES models that had OBDII were the 94 models.
Old 12-03-12, 01:40 PM
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fordor
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Thanks, I will check it out, Any VIN decoders out there????

Bob L.
Old 12-03-12, 04:48 PM
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canucklehe
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not sure this will give you all the info you want. If you search these forums, i remember seeing more detailed info on how to decipher VIN.

http://www.analogx.com/CONTENTS/vinview.htm
Old 12-04-12, 01:02 PM
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redzeppelin
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Usually, at least in my experience, you can only use a current OBD2 scanner on any vehicle 96 and up, regardless if it has the 94-95 OBD2 system. Even though lex started using OBD2 in the 94 es300, 94-95 were off years where a different connector and scanner port shape was used.
Old 12-04-12, 08:44 PM
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CUMan
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Originally Posted by redzeppelin
Usually, at least in my experience, you can only use a current OBD2 scanner on any vehicle 96 and up, regardless if it has the 94-95 OBD2 system. Even though lex started using OBD2 in the 94 es300, 94-95 were off years where a different connector and scanner port shape was used.
I have had no problems reading the codes on our 94 ES. The code reader I have is a very inexpensive one I picked up at Harbor Freight several years ago. The connector fits perfectly into the port located inside the fuse box.

Last year the check engine light came on. I checked the code. The reader gave the number for the bank one, sensor one oxygen sensor. Changed out the sensor, and the check engine light was gone.
Old 12-05-12, 05:36 AM
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princwendt
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not sure this will give you all the info you want
Old 12-10-12, 12:33 PM
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fordor
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Thanks everyone, I found the port as stated, in the fuse box, and was able to hook up w/o any problem. I have a bad O2 sensor.

Again,

Thanks
Old 12-10-12, 01:28 PM
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canucklehe
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so on my '93, what & where do you plug in to figure out CEL? I can't pass emissions.
Old 12-11-12, 04:39 AM
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LexusFool
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Default My 95 es300 has both OBDI and II

I have a 95 es300 and have both OBD I & II ports. the II is in the regular spot under the dash by the steering wheel and the OBD I is under the hood on the passenger side towards the firewall, it's a small black black box and uses pin connectors and a test light to count the flashes.
Old 12-11-12, 09:53 AM
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GS4_Fiend
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Originally Posted by LexusFool
I have a 95 es300 and have both OBD I & II ports. the II is in the regular spot under the dash by the steering wheel and the OBD I is under the hood on the passenger side towards the firewall, it's a small black black box and uses pin connectors and a test light to count the flashes.
ALL ES has it.
Old 12-11-12, 10:00 AM
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LexusFool
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Originally Posted by GS4_Fiend
ALL ES has it.
yes, 1994 and up. Not 1993, just OBD1.
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