the check gauges light comes on with no apparent problem. What are the potential causes?

If you mean the check engine light, you will need to have the error codes scanned. Autozone will do it. If it says maintenance required, it's probably due for an oil change.

Reelin: clueless. He said check gauges not engine.

Please replace your oil switch,it cost $50..it corrects the problem of"check gages"