So I have no transmission codes or OD Light when operating the vehicle and running. The O/D light blinks on-and-off-and-on-and-off etc when I jump the diagnostics so I can read my engine codes. Is this normal, or is the flashing O/D in diag mode bad? I was told that if the OD light was flashing the same way as the engine light does with giving numbers it would give a code. The O/D light just blinks with no stopping in diag mode, so there are no code numbers to read. 1995 OBD I.

 

Flashing twice/second is "operating normally." http://web.archive.org/web/201408161...31diagnosi.pdf

You probably have the A340H; it should be listed on the door pillar sticker.