Cylinder head overheat detected. It may or may not be related to you getting the exhaust done. No other codes?
---------- Post added at 07:51 PM ---------- Previous post was at 07:49 PM ----------
Pulled this from modded mustang. Good list of possibilities and things to check.
"Code*P1285*is*Cylinder*head*overheat sensed: if you have one of those do it your self code readers, they have generic code discriptions, some Vehicle manifactures may use different code discriptions there for gives you wrong data..this code will come on for a few posible reasons
1.Low engine coolant level
2.Engine problems and actualy overheating, lack of oil flow, oil pump, restricted*oil*filter, cooler etc,
3.engine cooling system problems, thermostat, restricted*radiator, electric fans not working, etc
4. bad coolant temp senor or wiring, too a bad PCM, got to start trouble shooting..."