O.D. off light ?

[fatlizzard]

Have a 95 240sx with auto trans.
The last several days whenever I start the car the Overdrive off light above the check engine light flashes for about 5 to 10 seconds then goes out, I have owned the car for about 9 years and it's never done this before,I have noticed it seems to shift a little harder between gears!!
Is the flashing light possibly some sort of warning to change the Trans. filter?

[ixfxi]

not to change fluid, but most likely either low fluid or some other fault... i believe the fsm has error codes depending on number of flashes.

amazing, no matter what i did to my sohc auto i never received any warning signals from the OD light. i guess that transmission really did love me. and to think, i threw it away for a 5-speed........................... :( haha

[fatlizzard]

Turns out it wasn’t a trans. problem at all!!
I have been having trouble with my factory alarm going off for no reason and had read about the sensor under the hood, I unplugged the one on the right that the hood depresses and I noticed a box on the left close to the air cleaner and thought it was a shock sensor and unplugged it, turns out that what I unplugged was the Revolution Sensor Dropping Resistor, plugged it back in and now the car shifts fine and my alarm doesn't go off