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Reading codes

3851 Views 10 Replies 5 Participants Last post by  Bob Lincoln
Some questions on getting fault codes...

Is there a scan tool that will plug in and read the pre-96 Dakotas (OBD 1?)?? I ask because I've never been able to count the flashes accurately, they just don't flash right on my truck. I've noticed 2 smaller plugs hanging below the driver's dash on my '94, also on a '95 I checked out today, are those plugs for a scan tool, if so, where can i find it?

On a 96 Dakota, how complete are the codes that show up through the OBD 2 port? Last week I scanned a 96 and it showed "no codes," even though 2 vacuum lines were unplugged and the truck was stalling. Is the 96 code bank incomplete because it was the first year or something?

Thanks for any help
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There are scan tools that can access the OBDI vehicles, for example I have an older SnapOn MT2500 that has cables for the two connectors on the OBDI Chrysler vehicles. The problem is OBDI was not standardized so a tool for those vehicles had a more limited market (or was very complex if it covered many vehicles) so cost was higher.

OBDII was pretty comprehensive even in 1996, but not everything sets a code even if there is a stall.
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