P0128 H C code/ help please
11-25-2005, 08:13 PM
#1
Instructor
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P0128 H C code/ help please
My check engine light came on last night. 
Checked for the code, P0128 H C. I found a code list on Z06Vette.com but, this code was not listed. Is there a code list on this forum? Can someone let me know what this is? Car runs perfect still. It's a 02 Z06 with cam, LT's, X, GHL. Thanks in advance.
Checked for the code, P0128 H C. I found a code list on Z06Vette.com but, this code was not listed. Is there a code list on this forum? Can someone let me know what this is? Car runs perfect still. It's a 02 Z06 with cam, LT's, X, GHL. Thanks in advance.
11-25-2005, 11:18 PM
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Burning Brakes
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11-26-2005, 07:19 AM
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Thank you 95autoLT1 
It was a little after we left Thanks Giving dinner and it was cool and I have a 160 stat, You rock with such fast help. 
It was a little after we left Thanks Giving dinner and it was cool and I have a 160 stat, You rock with such fast help.
11-26-2005, 08:01 AM
#4
Safety Car
01-28-2017, 07:25 PM
#6
My 2003 Z06 with cam, lts, callaway just started throwing this code once the weather has gotten cooler. I have a 160 thermostat. Do i just have to let the car warm up longer before driving? Car generally runs 162 to 171 degrees.
01-30-2017, 04:01 PM
#7
I have a 160 stat and Vararam ram air intake, drive the car in 20 degree weather, and haven't seen this code in my car. I do take it easy on her until the coolant temp clears the 160 mark, and even then wait at least a couple of miles before putting the hammer down.
01-30-2017, 08:16 PM
#8
From further reading this looks like an extremely common issue when running the 160 stat in cooler weather. Can be turned off by tuner or some guys switch between stock and 160 thermo depending on the time of year. Some guys get lucky and this code never shows. Ill keep an eye on it and if need be put a stock thermostat back in.
