TorqueMech OBD Code Guide
P0595 - Thermostat Heater Control Circuit
The ECM detected a fault in the thermostat heater control circuit.
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Inspect thermostat
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Verify radiator fan operation
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Related Inspection
Code Overview
The ECM detected a fault in the thermostat heater control circuit.
Common Causes
- Thermostat heater or assembly fault
- Damaged wiring or connector
- Control circuit issue
Diagnostic Steps
- Inspect thermostat heater connector and harness
- Check command and voltage at the heater circuit
- Confirm cooling-system operation before replacing parts
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Next Steps
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