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P0128 Diagnostic Trouble Code Discussion for June 2008

Thermostat System Malfunction

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Trouble Ticket Help Requests for DTC P0128
Help Request Posted
2004 Chevrolet Trailblazer EXT LS 4.2L MIL Lamp on VIN: 1GNES16S14
P0128: ect coolant temp sensor. ... chevy trailblazer(friends).this thing keeps throwing the p0128 code for the ect. i have checked the sensor several times and it has always been in spec,the radiator is always full, the coolant looks to be clear and good, recovery bottle level ok (and i've ...
June 30, 2008