In my '74 SW2, the SE light occasionally comes on (about once every two weeks, for about the last three months). There don't seem to be any problems, i.e. runs smoothly, fluids fine, gas mileage fine. Seems like switching off the a.c., then accelerating hard, clears the light... sometimes. The car usually gets about 90 miles of use each day.
Maybe a sensor is dirty? At any rate I'm having trouble figuring out where to start troubleshooting. We don't have an Autozone where I could read the codes for free. Any ideas? Would the code(s) be retained even though the light goes off?