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Old 07-11-2019, 01:24 PM
 
Location: Research Triangle, NC
1,279 posts, read 1,723,569 times
Reputation: 833

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Quote:
Originally Posted by dkf747 View Post
Why even have codes. Make it display in plain English what the problem is? Maybe display an out line of a car with an indication where the problem was detected.

Some cars do that, as has been stated.


For others, there's https://www.obd-codes.com/ for your reading pleasure.
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Old 07-11-2019, 01:39 PM
 
531 posts, read 453,331 times
Reputation: 992
Quote:
Originally Posted by papilgee4evaeva View Post
Yup.


My van threw three or four codes at once when the battery was on the way out. When I put in a new battery, all the codes vanished. Imagine if I had replaced those parts, or worse, taken the van to the shop for them to diagnose and fix everything... only to find that nothing was wrong except for the dying battery.

Which is one code they don't have and should, Battery Voltage Low, and the programming to prevent the false codes from showing.
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Old 07-11-2019, 07:24 PM
 
Location: Research Triangle, NC
1,279 posts, read 1,723,569 times
Reputation: 833
Quote:
Originally Posted by Ed Ferris View Post
Which is one code they don't have and should, Battery Voltage Low, and the programming to prevent the false codes from showing.
Except low battery voltage often makes all the electronics misbehave, including the OBD computer. AFAIK there's no way to program that out.
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Old 07-11-2019, 09:01 PM
 
531 posts, read 453,331 times
Reputation: 992
In the post I was responding to, the car started and drove, so the computer was working to some extent. You would think the Power-On Self Test would find a low voltage condition and at least report it.
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