What Does P0597 Mean? OBD-II Code P0597 is defined as a Thermostat Heater Control Circuit/Open Some newer engines utilize thermostats that are electronically controlled by the engine control module (PCM). If the PCM detects an incorrect signal from thermostat, the PCM will set code P0597. engine code P0597P0597 fixobd P0597dtc P0597obd code P0597obd2 P0597P0597 car codediagnostic code P0597car code P0597check engine code P0597fehlercode P0597P0597 fiatcodigo P0597codigo falla P0597P0597 kody b??dówcodigo de falla P0597 What are the common causes of P0597 ? The most common cause of this code being stored comes from defects in system circuitry. Loose, broken, or corroded wiring and electrical connectors are common and should be investigated first. Other possible causes include a defective electronically operated thermostat, the control housing (complete with computerized circuitry) in which the electronically controlled thermostat is often integrated could also be defective, the PCM could be faulty but this is a rare occurrence. A low engine coolant condition may also cause this code to be stored. If the engine overheats or if the cooling fan operates prematurely, this code may be stored. If there are other codes related to engine temperature or drivability are stored prior to this code being stored, diagnose and repair those before attempting to diagnose this code. How do you troubleshoot P0597 ? The most common repairs for the P0597 code include: Cleaning off or replacing damaged circuitry Replacing the thermostat Addressing a coolant leakage Searches related to P0597 - Thermostat Heater Control Circuit Open p0597 mini cooper thermostat heater control circuit chevy sonic thermostat heater control circuit chevy cruze p0597 cruise control circuit open p0597 peugeot vauxhall p0597 thermostat heater control circuit open p0597 astra thermostat heater control circuit high