P1299Cylinder head over-temperature protection active

• Ford code · Engine
• Turns on the check-engine light
• Can trigger limp mode

How the car detects it

The engine computer saw the cylinder head overheat and switched to its protection mode, which can cut power or run the engine on fewer cylinders to cool it. It usually comes with P1285. Stop as soon as it is safe, switch the engine off and let it cool before checking the coolant level.

What you may notice

• Engine temperature warning
• Marked loss of power
• Check-engine light

Likely causes

• PossibleLow coolant level (leak)
• PossibleCooling system fault: thermostat, water pump, radiator fan, blocked radiator
• RareCylinder head temperature sensor

Sources

• charm.li › P1299
• troublecodes.net › fordcodes
• static.nhtsa.gov › MC-11024273-0001.pdf · official document

Backed by at least two independent sources.

From Obdaryn's Ford pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.