P0117
Engine Coolant Temperature Sensor 1 Circuit Low
Powertrain · Generic (all makes)System: Fuel Delivery + Electrical/Circuits
Fix within days. Damage or fuel waste builds up.
Likely causes
- Shorted coolant temperature sensor
- Wiring shorted to ground
What to check first
Replace the coolant temperature sensor after checking its wiring. The engine may run rich and fans may run constantly until it's fixed.
Typical repair cost
$50 – $250
Independent-shop parts and labor for the usual fix. Your price depends on the actual cause and the vehicle.
Next step
General information, not a diagnosis of your vehicle. Repair costs are typical shop ranges, not quotes.