Jaquar S-Type Engine light - How do I fix it?

bourboneer

I've got a 2005, 4.2L V8 S-Type. Runs like a champ with no performance problems of any kind. The "engine" light just came on yesterday. I checked the oil and it was a little low. I was due for a change and had it done today, hoping it would fix the warning light. However, the light is still on. Anyone have an idea of what this is and if I can fix it easily? (as opposed to going to a Jag dealer) Does anyone have a list of error codes for this vehicle? I'll go to a parts store and have them run a diagnostic on it to see what comes up. Thanks for your help and input!