What does code P1299, and P0174 mean on a 1999 Mercury Grand Marquis LS?

Question

Its my mom's car, and I'm trying to fix it for her. So she doesn't get over priced to fix the issue, while I'm at work.

Answer 1

P1299 Cylinder head over temperature protection active

P0174 Fuel trim lean Bank2

Coolant leak or low coolant level. need to be check , what happens when you have this code condition is the engine is running hot, If there no coolant leak then the operation of the cooling fan has to be check, With the engine off and the engine at operating temperature the cooling fan should have resistance as you try to spin it by hand.