96 villager obd fail

[stevex311]

crankshaft sensor replaced 700 miles ago. codes cleared, however, catalytic conv.,oxygen sensor,and egr system show "not ready". Any ideas?
Stevex311

[dzus]

Try disconnecting battery for a hour or so and try again. Check engine control fuse to make sure it's not blown,also tap on pcm relay. These may help.

[IH8SPM]

That means they are not functioning well enough to get a reading. You will have to have them checked individually.