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P0128 Diagnostic Trouble Code Discussion for March 2008

Thermostat System Malfunction

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Trouble Ticket Help Requests for DTC P0128
Help Request Posted
2003 Cadillac CTS 3.2L MIL Lamp on VIN: 1G6DM57N93
P0128: ECT Sensor Below Thermostat Regulating Temperature. we installed a new dealer stat about 300 miles ago and same code has come back and curious if any others have run into this problem...also the cooling fans are not running all the time that i noticed since it came in thanks for any help..
March 05, 2008