Error code
Dodge All models code P0128
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Meaning
Coolant temperature below thermostat regulating temperature. Thermostat stuck open - most common code on Charger, Durango, and Grand Caravan. Also causes poor heater output and downstream rich codes. Thermostat replacement resolves it in the majority of cases
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Address of this page: https://www.remfixit.com/tr/dodge/tum-modeller/p0128