[Shop-talk] engine code web site

Wayne wmc_st at xxiii.com
Mon Nov 5 17:59:17 MST 2012


On 11/5/2012 7:18 PM, Matt wrote:
> I found a useful .pdf that has all the GM codes at:
> http://www.edgeproducts.com/product_images/customer_support_article-pdf-40.pdf

Nice reference! Thanks, Matt.

If you look at the coding structure explained there, any of the codes 
with a zero in the 2nd position (thousands digit) are standard across 
all manufacturers and cars, so it's not just a GM reference. Not every 
car is able to monitor every one of those, but a given code means the 
same thing on any car it pops up on. OBD-II also standardized the 
nomenclature for all the parts & controls. Seemed kinda draconian when 
it came out nearly 20 years ago, but in retrospect, it's a good idea and 
actually makes it easier for DIYers and small time shops to work on 
modern vehicles (vs having to have a manufacturer specific reader for 
each one.)

-Wayne


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