Question

What could cause the engine code p1299 on my 2003 Ford Expedition?

Answer 1

P1299 Cylinder head over temperature,

inpsect the cooling system for over heating condition,You need to have the correct coolant level,The radiator is not block or partially plugged,There is no coolant leak especially the heater core and the heater hose,The cooling fan operation.When the engine warmed up the,with engine off,the cooling fan should not easily spin.Some production just has a electrical fan, and the fan has to be operational,A non operation thermostat or even a failing thermostat,

Answer 2

P1299 FORD - Cylinder Head Temperature Sensor Detected Engine Overheating Condition

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