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Discussion Starter #1
This came up in another thread and I thought I'd post a new one to make it easier to find and stop sidetracking that other thread.

There are many vendors for OBDII interface cables for your laptop (windows and linux only as I understand). Here are two that I know of with experience:
http://store.mo-co-so.com/obdiiinterfaces-c-31.html
A friend uses the cheap one on his Acura without issue.
http://alpha-bid.com
I've used their "VAG-COM" one on a VW. Never tried the generic for a Honda.
I'm pretty sure this is the USB to OBDII version we'd want for a newer V:
http://www.alpha-bid.com/product30.html
ELM buying guide:
http://www.alpha-bid.com/page15.html

Also, please note that these inexpensive items and the free software you'll likely use with them have no guarantees whatsoever. So, if your 30.00 code reader turns the 2000.00 ECU into a useless brick, you have no recourse.

Also, I'm pretty sure the newer Honda's use the ELM protocol for these interfaces. I'm not sure what the differences are between ELM 323 and ELM 327. I need to look that up or perhaps someone else can respond on that.

Also, the new Hondas (and all cars made after 2006 I think) use CAN-BUS. There are different standards for that too. Not sure which one Honda uses. But, my guess is they use one which is widely supported.
 

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I got the impression that CAN-BUS initially was diesel related from AutoTap. It might be just their implementation however.​

The difference between ELM 323 and 327 is pretty clear form Alfa-Bids's web site:

http://www.alpha-bid.com/page15.html

But no Tech Support! Yikes! :eek: You get what you pay for I am sure.

Would I connect it up to my CR-V's $2000 ECU? Maybe right after you do BarryS... :D

Even then I might have to think about it.

-Rg​
 

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Everything in Moderation
2006 CR-V EX, 5MT
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I've never damaged an ECU using a laptop with OBDII software.

I HAVE seen cars that were "reluctant" to give up their information... (they didn't communicate with the laptop). :mad:
 

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Discussion Starter #4
> Would I connect it up to my CR-V's $2000 ECU? Maybe right after you do BarryS...

Funny guy... :) Do they really charge 2K for an ECU?

I used their cable on my VW Pissant many times without issue and communicated with all subsystems. Yes there's no support. So, that's the risk we always take if we want to save money. They do sell a lot of PC interfaces (10's of thousands) and I've only heard of one setting a pc on fire (that's not a joke). I hear SnapOn sells a really nice OBDII reader and they support it. It's actually not that expensive -- about 250. It includes lots of adapters and does support CAN-BUS.

As you see on that referenced page, all newer cars -- I think 2006+ -- are CAN-BUS.

This is the link from Alpha-bid to their chart of which vehicles support which protocols:
http://www.obdclearinghouse.com/index.php?body=get_file&id=1301

Then, the link from Radar24 maps the ELM protocols to the vehicle protocols.

But, if you get the one that supports CAN you're good to go since they're all backwards compatible with any previous protocol.

I like using the PC interfaces so I can get cool free software to do real time monitoring just because it's fun. If I were ever going to write any settings, I would not even consider anything that's not from Honda or equivalent with lots of verified user testing.
 

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I know this is an old thread.
But technology changes rapidly.

Any fresh recommendations for a 2015 CRV??
I have used Laptop OBDII software w/ adaptors for years on many models. Never had any problems.
But I am an old guy and my adaptors won't do CAN-bus. So it is time to get something newer.

So, anybody buy scan tools, adaptors, or PC software recently ???
 

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This OBDII is quite useful for diagnosis, but it is grossly obsolete, IMHO.

With all the computing power in a modern car, when something electronic fails, the dash's screen should display a specific part and its part number that needs to be replaced. Easy on techs, easy on owners, and easy to implement. I can't imagine why the car companies won't do it yet widely implement glitsy trinkets of little value.
 
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