Coolant Temperature Sensor Replacement: labor quote guide
Typical labor time (approximate)
About 0.3 to 1.5 hours. About 0.3 to 1.5 hours. Sensors on top of the engine are quick; those under the intake or behind components take longer.
Approximate only: a rough general range, not labor-guide data. Times vary widely by vehicle and condition. Check a labor guide for the exact vehicle. How we estimate
The quote buttons open the labor-quote calculator prefilled; "Start an estimate" adds a labor line to the estimate & invoice generator. Add your own rate, parts and tax.
What's involved
- Compare the sensor reading with actual temperature (infrared thermometer, or the IAT on a cold engine)
- Check wiring and connector
- Drain a little coolant and replace the sensor
- Top off and bleed coolant and verify readings
General outline only. Follow the service information for the specific vehicle.
What changes the time
- Sensors under the intake or behind the head
- Brittle plastic connectors
- Bleeding requirements
- Multiple temperature sensors on some engines
Related parts & common add-ons
- Thermostat
- Connector pigtail
- Coolant top-off or flush
- Cooling fan check
Price parts with the parts markup calculator, and note findings on the inspection checklist.
FAQ
What are the symptoms?
Erratic gauge readings, hard starts, poor fuel economy, fans running constantly, or codes for the sensor circuit.
Can I just replace the sensor based on a code?
Check the wiring and connector first. Corrosion often causes circuit codes.
Is the gauge sensor separate?
On some vehicles the gauge and the ECM use different sensors. Check which one you're replacing.
More cooling system jobs
- Water Pump Replacement
- Thermostat Replacement
- Radiator Replacement
- Radiator Hose Replacement
- Radiator Cooling Fan Replacement
- Coolant Flush / Exchange
Other systems: Brakes · Engine, ignition & fuel · Electrical & diagnostics · Suspension & steering · Drivetrain · Heating & AC · Maintenance & tires · All job guides