Sometimes the red light that comes on will distract from the other parts of the gauge cluster. And a person won't notice that their oil pressure has gone to zero or their temp has pegged to maximum. Then after they have pulled over and things have reset, nothing shows up. If the CEL (Check Engine Light) is on, take it to an auto parts store to have the codes read to see what the real problem is. Without knowing the code is, it could be too many things to list that are possibly wrong.