Code P0842 and P0128 what do they mean?

Question

I have a check engine light. At AutoZone I was told it could be P0842 or P0128? I'm worried about them. What are they related to? what I'm to look for. The car starts with no problem. Please help.

Answer 1

P0128  Coolant thermostat malfunction

P0842  Pressure monitor lock up (Transmission)

They can be related,P0128 is the thermostat, inspect the cooling system,make sure you have full coolant and no coolant leak,and replace the thermostat,