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P0128 Diagnostic Trouble Code Discussion for March 2015

Thermostat System Malfunction


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Trouble Ticket Help Requests for DTC P0128
Help Request Posted
2002 Honda Civic LX 1.7L MIL Lamp on VIN: 1HGEM22522
P0128: Cooling System Malfunction. This car flags a P0128 the day after the code is cleared. I have replaced in order the thermostat(Honda genuine) and the engine coolant temp. sensor(Honda). When the freeze frame is read I see -5 degrees Celcius as the coolant temp. I know that I am not in Min...
March 16, 2015
2002 Honda Civic LX 1.7L MIL Lamp on VIN: 1HGEM22522
P0128: Cooling System Malfunction. This car flags a P0128 the day after the code is cleared. I have replaced in order the thermostat(Honda genuine) and the engine coolant temp. sensor(Honda). When the freeze frame is read I see -5 degrees Celcius as the coolant temp. I know that I am not in Min...
March 21, 2015
2003 Chevrolet Impala LS 3.8L MIL Lamp on VIN: 2G1WH55K13
P0128: Engine Coolant Temperature Below Thermostat Regulating Temperature. Got this impala that has a p0420 and p0128 for thermostat and cat efficiency. I went ahead and slapped a thermostat in it because it was very quick and easy to do. That brought the temperature back up to specs. My question is the p0420. I didnt look at the o2s...
March 23, 2015