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P0128 Diagnostic Trouble Code Discussion for September 2007

Thermostat System Malfunction

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Trouble Ticket Help Requests for DTC P0128
Help Request Posted
2000 Subaru Legacy GT 2.5L MIL Lamp on VIN: 4S3BE6459Y
P0128: thermostat temp too cold too long. there seems to be very little info on this code. the last freeze frame, code set at 60 mph at a coolant temp of 160 deg.any info would be great.i think the peramiters are too tight on this code possible reflash ??
September 13, 2007