2005 Chevrolet Trailblazer Q&A
2005 Chevrolet Trailblazer Question: P0128 Code
Just today my check engine light came on and I took it to O'Reilly's and had the code checked. It came up as a P0128 error code. The car is running fine. My husband is going to check the fluid levels when he gets home. Not sure what to do next after that. Will it hurt to drive it until we can get it fixed? - Gmom
engine is not running hot enough from a bad thermostat. either that or the coolant sensor is not reading correctly. i would not wait to long to get it fixed. Roy - mastertech6371
95% OF THE TIME YOU WILL NEED A THERMOSTAT. THE ENGINE DOES NOT HAVE TO BE RUNNING HOT, THE TEMP CAN BE TO LOW OR OPENING SLOW AND NOT ALLOWING ENGINE TO GO INTO CLOSED LOOP FAST ENOUGH. REPLACE YOUR T-STAT, CLEAR THE CODE AND I'M SURE YOU WILL BE OK - BILBO
I have had this P0128 Code for over a year now - so it obviously is not causing problems because the engine runs fine, gr...
Engine light on, OBD II Code P0128 and P0106. Coolant temperature below Thermostat. Leak somewhere from the coolant line when the air-cont on. I just change the map sensor last week and reset it ...
have codes P0306,P0410,P0128 don't no where to start looking for or replace parts.need help badly thanks terry
I have a check engine light staying on. The code is PO128, with listed probable cause being 1. coolant level 2. Thermostat defective, or 3. Engine coolant temperature sensor defective. The coolant...