What does code P0115 mean?
The ECU detects a general fault in the engine coolant temperature (ECT) sensor circuit
OBD-II Code
P0115 — Engine Coolant Temperature Circuit Malfunction
The ECU detects a general fault in the engine coolant temperature (ECT) sensor circuit
Common symptoms
- Hard starting when cold or hot
- increased fuel consumption
- abnormal cooling fan operation
Possible causes
- Faulty ECT sensor
- corroded connector
- open or shorted wiring
Initial recommendation
Check ECT connector and wiring, verify coolant level and replace sensor if readings are incorrect.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0115 with your vehicle's actual symptoms for more complete diagnostic guidance.
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