I found this in a tech line Honda service news article
Here.s something from our .strange but true. file:
On .96.00 Civics, .97.00 CR-Vs, and .96.97 del
Sols, if the MIL comes on intermittently and
misfire DTCs are set, without an engine
performance problem, inspect the alternator drive
belt. If the drive belt isn.t a Honda drive belt,
remove or replace the drive belt, and retest.
Tech Line has had several cases where the
alternator drive belt caused intermittent misfire
DTCs that couldbe resolved only by replacing the
drive belt. The root cause of this problem is
related to the quality control of the belt.