[align=left]1997 discovery OBD II codes:

P1153[8D]

P1198[:'(]

P3999[>:][][:@]

Any available definitions?
Especially the P3999.[X(]
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Those codes don't show up on my list, where did you get them, what is your truck doing wrong?
Mike

 

Runs fine.
Drivability is not affected.
Does have some electrical problems, such as dash lights that don't.
But, that does not affect emissions.
I cant find a book on this truck anywhere except the dealership.
Can't afford that.

???
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