Engine Error
P0116
Engine Coolant Temperature Sensor 1 Circuit Range/Performance
Severity
Medium
Symptoms
Erratic temperature gauge, poor heater performance, engine running rich
Common Causes
- Defective Engine Coolant Temperature (ECT) sensor
- Thermostat stuck open
- Low coolant level
- Air pocket in the cooling system
How to Fix
- 1 Replace ECT sensor
- 2 Test and replace engine thermostat
- 3 Top off radiator with correct coolant
- 4 Bleed the cooling system
Estimated Repair Cost
USD
$50
–
$300
Thermostat: $100 - $250; ECT Sensor: $50 - $150