i have a 2001 s10 and the service engine light came on and the code is p0128 on 2001 Chevrolet S10

i have a 01 s10 and the code is p0128 and says coolant thermostat (coolant temperature below thermostat regulating temperature) what does that mean and what does the code stand for

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1 answer 5 comments
REPLACE THERMOSTAT AND CLEAR CODE.
I agree with wetry after you replace t stat and clear code if light comes back on run engine till you get to normal temp and then use a scanner to check the coolant temp you could a bad temp sensor
I agree with goodguy , replace, clear , VERIFY. And once it's fixed , sit and enjoy a bowl of green jelly. If we call farting 'breaking wind' then are the hurricane winds , God farting?
I AM GLAD WE ALL AGREE BUT THAT COULD BE A BAD SIGN!
PS, I HOPE GOD DOESN'T GET GAS IF "SANDY" IS JUST A FART.
Scary how we think isn't it?
SCARY AS HELL!