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Old 08-25-2010, 07:02 PM   #1
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Looking to purchase a OBD2 scanner...

How do I know which one I will need? I read that there are OBD2, and OBD2CAN, or CANBUS scanners. How do I determine which one I need?


Thanks All,

Andre

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Old 08-25-2010, 07:14 PM   #2
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Your TJ is OBD2, what model year is it? So long as your TJ is not a '98 to '00, it has the built in ability to display its own codes.

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Old 08-25-2010, 08:33 PM   #3
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Thanks Jerry, I figured it was OBD2, but got a bit confused by some of the newer scanners that support this CAN feature for 2003+ models.

My TJ is an '03, and I know it can display the codes in the Odo, but what I really want is something that will clear codes and the CEL, so that I don't need to keep disconnecting the battery every time I feel like tinkering around with the thing. Will a regular scanner work? Is there a particular one that would be recommended?
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Old 08-25-2010, 08:53 PM   #4
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Quote:
Originally Posted by HOUND View Post
Thanks Jerry, I figured it was OBD2, but got a bit confused by some of the newer scanners that support this CAN feature for 2003+ models.

My TJ is an '03, and I know it can display the codes in the Odo, but what I really want is something that will clear codes and the CEL, so that I don't need to keep disconnecting the battery every time I feel like tinkering around with the thing. Will a regular scanner work? Is there a particular one that would be recommended?
The scanner will read and possibly clear the code temporarily. But, if you dont fix the problem, the CEL will just come back on..
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Old 08-25-2010, 11:18 PM   #5
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The scanner will read and possibly clear the code temporarily. But, if you dont fix the problem, the CEL will just come back on..
Coop, I'm not exactly concerned with fixing the problem, I know what the problem is. So long as I run my current setup, I will have the same code. What I'm asking is which type of reader/scanner should I purchase for an '03 TJ, to clear that particular code so that if any OTHER problems were to arise, I wouldn't have the CEL on constantly, and would be alerted of the issue.

Some of the scanners I have seen have stated that they are CAN protocol compatible for vehicles 2003 and newer. They are also a bit pricier than the non-CAN ones. Is this the type of scanner I need to purchase or not? How would I know if my TJ has this CAN system?
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Old 08-25-2010, 11:23 PM   #6
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I know that my local Autozone will clear the codes and read them any time I want for free. You may want to check into that.
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Old 08-25-2010, 11:23 PM   #7
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My buddie has a Snap-On scanner (I think) and its upgradable. Clears codes and gives actual definitions as opposed to just the codes. It was a little expensive, though.
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Old 08-25-2010, 11:54 PM   #8
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Gee Oh Dee, do you know if it needs to be a scanner that is CAN, or will most of the high end units have that upgrade available? I'm not as concerned about price as I am interested in long term reliability, but would also like to keep it from getting as costly as some of those $300+ units.

Doc, I went to the Autozone down the block and that's where I saw that there are a few different models. The kid behind the counter had no clue what was going on, and if it wasn't about Civics, he wasn't too interested in hearing what I was asking, sadly.
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Old 08-26-2010, 12:19 AM   #9
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I bought an Innova 3030 from walmart.com for about 50 bucks shipped. Someone on another board said that particular model would read CRD (common rail diesel) codes on my Liberty and others would not. It does everything they said it would.

Check around. If I were to do it again, I'd get something that tracks real time engine operations. Might even get a higher end Innova (about 100 bucks). The stuff at Autozone seems overpriced.

FWIW, Autozone will not clear codes in Utah.
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Old 08-26-2010, 12:22 AM   #10
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Quote:
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Gee Oh Dee, do you know if it needs to be a scanner that is CAN, or will most of the high end units have that upgrade available? I'm not as concerned about price as I am interested in long term reliability, but would also like to keep it from getting as costly as some of those $300+ units.

Doc, I went to the Autozone down the block and that's where I saw that there are a few different models. The kid behind the counter had no clue what was going on, and if it wasn't about Civics, he wasn't too interested in hearing what I was asking, sadly.
I'm not sure to be honest. I know he's got a place to insert several chips into his plug, so I assume he's compatable with newer setups. I kinda work part time for him when I can and he's worked on really new stuff.

As for the Autozone civic kid, don't expect too much more from any parts store. Their normal workers aren't that great anywhere.
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Old 08-26-2010, 02:04 AM   #11
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Look on Ebay. There are lots of inexpensive scanners there.

If it says CAN it means if you have the CAN protocol it will read it as well as regular OBDII. It'll read both.

If you have a laptop you can get the interface to the vehicle for super cheap. You can do everything a hand scanner can do plus a BUNCH MORE. Software for them is available to download from the internet both for free and for a fee.

I used a old desktop on a roll around cart, instead of a laptop. It all got destroyed when a customer backed up before I disconnected. The cart fell over, monitor exploded, and hurt the desktop computer.

Gotta do it again.
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Old 08-26-2010, 02:13 PM   #12
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I agree on the snap-on. You really want something that will do a little more than just tell you what the code is.(Like the auto zone one). Auto Zone can only tell you what the code is. They can not clear it. Their scanner is very generic.
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Old 08-26-2010, 04:23 PM   #13
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i run a Scangauge II...little different idea

ScanGaugeII - Trip Computers + Digital Gauges + Scan Tool
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Old 08-26-2010, 05:47 PM   #14
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Now that Scanguage looks like it'll do what I'm looking for and then some! I think I'll need to look into that type of scanner. Thanks!!

As for having the software on a laptop, are these programs strictly a PC thing? Or will I be able to install it on a Mac as well? I'd like to have it on my home and work computers, just in case

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