P0117: Engine Coolant Temperature Sensor Circuit Low
20 vehicles · 12 makes · $150-$7,000 repair
P0117 is an OBD-II diagnostic trouble code meaning “Engine Coolant Temperature Sensor Circuit Low.” The coolant temperature sensor circuit is reading lower than expected. Usually a sensor or wiring fault, not actual coolant temperature. This code appears across 20 vehicle models from 12 manufacturers, with repair costs ranging from $150 to $7,000.
Common Causes
Typical Repair Cost
Based on 20 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0117, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Vehicles Affected (20)
FAQ
What does P0117 mean?
P0117 stands for "Engine Coolant Temperature Sensor Circuit Low." The coolant temperature sensor circuit is reading lower than expected. Usually a sensor or wiring fault, not actual coolant temperature.
What are the most common causes of P0117?
The most common causes of P0117 are: Faulty coolant temperature sensor, Short circuit in wiring, Corroded connector, Damaged wiring harness, Poor ground connection. The specific cause varies by vehicle.
How much does it cost to fix P0117?
Repair costs for P0117 range from $150 to $7,000, depending on the vehicle and root cause.
Which vehicles are affected by P0117?
Au7o has documented P0117 across 20 vehicle models from 12 manufacturers: Audi, Cadillac, Chevrolet, Chrysler, Dodge, Ford, GMC, MINI, Nissan, Subaru, Toyota, Volvo.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.