P0128 dtc ?
02-22-2007, 09:46 AM
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P0128 dtc ? My engine started to buck and hesitate a lot on my way home yesterday, just running like garbage. After a while my ses light was finally triggered and a few seconds later, everything was ok. Hesitation and all were gone. The code is P0128 which is supposed to be "Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)" but when I looked at this same code in my LS1 Edit program it says "HO2S Bank 1 insufficient activity". Which one do I believe to diagnose my problem?
02-22-2007, 11:28 AM
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05-29-2007, 09:59 AM
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Originally Posted by silent1
My engine started to buck and hesitate a lot on my way home yesterday, just running like garbage. After a while my ses light was finally triggered and a few seconds later, everything was ok. Hesitation and all were gone. The code is P0128 which is supposed to be "Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)" but when I looked at this same code in my LS1 Edit program it says "HO2S Bank 1 insufficient activity". Which one do I believe to diagnose my problem?
What did you end up doing to fix this issue? My '02 WS6 just started doing this over the weekend...
-Eagle
