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These codes refer to 3 different issues.
P0053 - HO2S Heater resistance Bank 1, sensor 1.
P0054 - HO2S Heater Resistance Bank 1 Sensor 2
P0324 - Knock Sensor (KS) Module Performance.
P0326 - Knock Sensor Circuit Excessive Spark Retard.
P0597 - Thermostat Heater Control Circuit Open.
You need to get a good mechanic to look at this. The HO2S codes refer to both of the 'O2' sensors in the exhaust, (mounted before and after the Catalytic Converter). They monitor the exhaust gas mixture to correct fuel mixture to the engine to control exhaust gas pollution levels. If one is detecting a wrong reading, the fuel/air mix is automatically adjust.
The Knock sensors detect vibration from when the fuel is burning. If the sensor detects a 'bang' when it shouldn't be there it alerts the ECM (cars brain) to adjust the timing sequence.
Wrong readings cause the ECU to adjust the fuel/air mixture to the wrong setting causing rough engine running.
The thermostat code is for the wiring to the coolant thermostat sensor.
Hi CJ-
For many years now, engine codes have been standardized throughout the automotive industry to ease in vehicle diagnostics-so these codes are the same regardless of the maker of your car.
I use a site "engine-codes.com", to look these up on line. This is an excellent site since it not explains the code, but also troubleshooting methods for mechanics to fix the problem. For ease of information, I have provided the links for the codes you listed.
It sounds as though you may have issues with your O2 (oxygen sensor) which monitors the combustion and emissions system in your car.
Though rates vary from shop to shop, this should not be a wallet busting repair if replacement is needed. P0597 MINI Thermostat Heater Control Circuit OpenP0036 HO2S Heater Control Circuit Bank 1 Sensor 2P0037 HO2S Heater Control Circuit Low Bank 1 Sensor 2
The engine control module (ECM) controls the pulse width modulated (PWM)
thermostat. The thermostat controls coolant flow and regulates the
engine operating temperature. Ignition voltage is supplied directly to
the thermostat. The ECM controls the thermostat by grounding the control
circuit with a solid state device called a driver. The driver is
equipped with a feedback circuit that is pulled-up to a voltage. The ECM
can determine if the control circuit is open, shorted to ground, or
shorted to a voltage by monitoring the feedback voltage.
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