P0597 BMW - Thermostat Heater Control Circuit Open
- Failed Engine Cooling Thermostat
- Engine Cooling Thermostat harness is open or shorted
- Engine Cooling Thermostat circuit poor electrical connection
If there are not coolant system leaks, replaced the thermostat to fix the problem.
When is the code detected?
The P0597 is triggered when there is an open or short thermostat heather control circuit.
- Engine Light ON (or Service Engine Soon Warning Light)
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