✅ Fixed
Thermostat stuck closed — engine not able to circulate coolant to radiator. Replaced thermostat and coolant $85. Temperature now stable at normal operating range.
Subaru Legacy 2021 Engine overheating temperature gauge high
Subaru
2021
Safe to Drive?
🚫 Do NOT Drive
Urgency Level
🔴 Fix Immediately
Subaru Legacy 2021 temperature gauge climbing toward red. Pulled over safely. No visible leaks initially. 74983 km. This fault code is stored when the engine control unit detects a specific fault condition. Common causes include sensor failures, wiring faults, and component wear. Always read additional fault codes before replacing parts — multiple codes together provide a clearer diagnosis. Clear the code after repair and test drive to confirm the fault does not return.
🔍 Symptoms
📍 Subaru Legacy
⚙️ Possible Causes
Subaru Legacy
Possible: Thermostat stuck closed — engine not able to circulate coolant to radiator. Replaced thermostat and coolant $85. Temperature now stable at normal operating range.
Repair / Solution
Based on 48 driver confirmations
🧾 Driver Reports
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