Engine Coolant Temperature Circuit Malfunction
Verified1 source
1 source
- Official data (NHTSA)official_feed
What P0115 means
Caution — monitor closely
The engine coolant temperature (ECT) sensor circuit signal is out of range.
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General information, not a diagnosis or repair instruction. Always confirm with a qualified mechanic for your specific vehicle.
Common causes
- Engine Coolant Temperature Circuit Malfunction
What to check first
- Check coolant level
- Test ECT sensor resistance at known temperatures
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