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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - DTCS P0112-00 To P024B-00 >> DTC Troubleshooting >> P0128-00-Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) >> Possible Causes

Possible Causes

Possible Causes
LOW COOLANT LEVEL
COOLING SYSTEM ISSUES
THERMOSTAT OPERATION

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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