What are Code P0597 Chevrolet Possible Symptoms Engine Light ON (or. P06DA Code - Engine Oil Pressure Control Circuit / Open 1- Engine Check Light on (not flashing). The P0597 is triggered when there is an open or short thermostat heather control circuit. The function of the thermostat is to control the flow of the coolant or temperature of the engine electronically, part throttle improves fuel economy and reduces emissions. Unfortunately, these units have a high failure rate. P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1. An electronically controlled thermostat is composed of multiple temperature and load sensors, a computer program, and a control housing with a built-in thermostat. The PCM monitors coolant temperature at the sensor and use a pulse width modulated power to regulate how much heat to apply to the wax pellet in the thermostat to speed up opening time. The thermostat begins to open at 221☏ and is fully open at 248☏. I have replaced the thermostat, coolant level is full. I have read the previous threads on this topic and I have came to the conclusion I have a problem with the wiring harness leading to the thermostat housing. The thermostat, housing, heater and sensor are a single unit. P0597 Engine Coolant Thermostat Heater Control Circuit>P0597 Engine Coolant Thermostat Heater Control Circuit. P0599 Thermostat Heater Control Circuit High. GM uses a heated thermostat assembly as a single unit. So car makers also incorporate a heating element in the thermostat to speed up thermostat opening to provide optimum cooling. But that can also impair engine cooling once the driver takes off from idle. Some rely on a radiator shutter mechanism to block airflow across the radiator to reduce heat loss on the engine coolant. Car makers use various methods to improve cabin heating. These smaller engines often run hotter when the turbo is in operation, but can fail to output enough heat to warm the passenger cabin when the vehicle is at idle in cold conditions. Why use a heated thermostat?Ĭar makers routinely install smaller turbocharged engines to lower vehicle weight and improve gas mileage and emissions. A P0597 Engine Coolant Thermostat Heater Control Circuit Trouble code indicates a problem with the thermostat, heater, wiring harness, electrical connector or the thermostat housing itself. Late model engine use a heated thermostat. Repair Topics > Cooling System Service > P0597 Engine Coolant Thermostat Heater Control Circuit P0597 Engine Coolant Thermostat Heater Control Circuit Fix P0597 trouble code What is a P0597 trouble code?
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