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Clearing OBD codes 200 1991

"...cleared the codes (funny but I had to disconnect the battery to get them cleared)"

Next time just remove fuse #6 for a second or two. For '91 on 240s, that's the main Fuel and Ignition fuse. Removing it kills the "keep alive" voltage.

That way your radio code and presets won't get erased.
--
Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.






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