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I did a search and found nothing to explain this. I have a check engine light on (1993 lexus sc300). I ran 2 cables in the diagnostic fuse box TE1 and E1 to check the codes. Problem is it just keeps flashing on dash. No specific flashing just a constant flash with no long pauses. I watched it for several minutes and it just flashes non stop(similar to a blinker flash). Any idea what the problem is (or is this in itself a code)? Thanks!
In case this comes up in searches for the future. The problem was a bad ECU. Sent it to a repair place. It still had a check engine code but it now flashes the correct codes.