P0128 code

JeepJeep

New Member
Joined
Nov 4, 2019
Messages
3
Location
USA
Hi all. Im new to this site and just wanted to get other opinions. My check engine light came on so I got my code reader and it threw "P0128". I just recently replaced my thermostat in the last couple months so I'm not sure what this new code is for. Any help?!
 

Chris

Administrator
Staff Member
Joined
Sep 28, 2015
Messages
29,868
Location
Salem, Oregon
What kind of thermostat did you replace it with? Hopefully not a low temp one.

It sounds like your vehicle is leaking or burning coolant. Have you checked the coolant level in the radiator when the engine is cold?
 
OP
J

JeepJeep

New Member
Joined
Nov 4, 2019
Messages
3
Location
USA
What kind of thermostat did you replace it with? Hopefully not a low temp one.

It sounds like your vehicle is leaking or burning coolant. Have you checked the coolant level in the radiator when the engine is cold?
Im sorry i didn't see your response. I'm not exactly sure what type of thermostat it was but it was a higher temperature one. I brought it into a mechanic and he held onto it for a couple days but when i got it back he said he wasnt able to find anything. My check engine lught came back on again and my coolant level is still dropping (not nearly as much as it was but still dropping).
 

Chris

Administrator
Staff Member
Joined
Sep 28, 2015
Messages
29,868
Location
Salem, Oregon
Im sorry i didn't see your response. I'm not exactly sure what type of thermostat it was but it was a higher temperature one. I brought it into a mechanic and he held onto it for a couple days but when i got it back he said he wasnt able to find anything. My check engine lught came back on again and my coolant level is still dropping (not nearly as much as it was but still dropping).
It sounds like you may have a cracked head / block. Either that or possibly a head gasket that is going bad.