P0598 Volkswagen Thermostat Heater Control Circuit Low
Possible causes
– Failed Engine Cooling Thermostat
– Engine Cooling Thermostat harness is open or shorted
– Engine Cooling Thermostat circuit poor electrical connection
– Engine Cooling Thermostat harness is open or shorted
– Engine Cooling Thermostat circuit poor electrical connection
Tech description
If there are not coolant system leaks, replaced the thermostat to fix the problem.
What about the obd code?
The P0598 Volkswagen is triggered when there is an open or short thermostat heather control circuit.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
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