99 S80 2.9 64,000 Miles Text Message?

[RichardN12]

After driving a few miles the orange ! warning mark in the triangle comes on and the cruise control stops working. The text window says 'engine system fix next service'. Everything else seems to be working good. Any ideas as to what could be the problem? I do not have the OBD codes. Called the Volvo dealer and he said it should be ok to drive and I should bring it in later. He did not give any indication as to what might be the problem. I changed the spark-plugs and air filter at 60k. Re-tightened the fuel cap. Do not see any loose hoses.