Fault Code P2186
Code meaning, symptoms, possible causes, part number, and estimated cost.
P2186
Engine Coolant Temperature Sensor 2 Circuit Intermittent/Erratic
This code indicates inconsistent or intermittent temperature readings from the second Engine Coolant Temperature (ECT) sensor (if present), suggesting an intermittent electrical fault or a loose connection.
Part Details
Part Name
Engine Coolant Temperature (ECT) Sensor
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪150 - ₪450
Engine Location
Engine block/Cylinder head
Symptoms
- Temperature gauge fluctuates suddenly
- Cooling fan turns on/off without reason
- Inconsistent fuel consumption
- Check Engine Light on
Possible Causes
- 1Loose connection or corrosion in connectors
- 2Damaged wiring (intermittent fault)
- 3Intermittently faulty ECT2 sensor
- 4Engine Control Module (ECM) fault
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