P0116moderate severityPowertrain
ECT Sensor 1 Circuit Range/Performance
on 2023 Chevrolet Bolt EV 65 kWh Single Motor FWD · FWD
What this code means
The ECT sensor reading is not changing appropriately as the engine warms up.
Symptoms
- Check Engine Light
- Poor fuel economy
- Overheating concern
- Fan issues
Common causes
- Stuck thermostat
- Faulty ECT sensor
- Air pocket in cooling system
- Low coolant
Diagnostic steps
- Monitor ECT warmup curve
- Test thermostat
- Check for air in system
- Test sensor
Repair notes
Replace thermostat or ECT sensor. Bleed cooling system.
Other Powertrain codes on this vehicle
P0070
Ambient Air Temperature Sensor Circuit
P0071
Ambient Air Temperature Sensor Range/Performance
P0072
Ambient Air Temperature Sensor Circuit Low
P0073
Ambient Air Temperature Sensor Circuit High
P0115
Engine Coolant Temperature (ECT) Sensor 1 Circuit
P0117
ECT Sensor 1 Circuit Low Input
P0118
ECT Sensor 1 Circuit High Input
P0119
ECT Sensor 1 Circuit Intermittent
P0125
Insufficient Coolant Temperature for Closed Loop Fuel Control
P0128
Coolant Thermostat Below Regulating Temperature