P0116: Engine Coolant Temperature Sensor 1 Circuit Range/Performance
13 vehicles · 9 makes · $30-$2,000 repair
Most Reported On
P0116 is an OBD-II diagnostic trouble code meaning “Engine Coolant Temperature Sensor 1 Circuit Range/Performance.” P0116 means the engine control module detected an engine coolant temperature (ECT) sensor reading that is within wiring limits but doesn't make sense — for example, it doesn't rise as the engine warms up, or it disagrees with other temperature data. The ECT sensor reports coolant temperature, which the computer uses for fuel mixture, ignition timing, cooling-fan control, and emissions monitors. An implausible reading can cause poor fuel economy, hard cold starts, or failed emissions readiness. It is generally drivable but should be fixed for proper engine management. This code is most commonly reported on 2000-2012 Peugeot 206 (XR, XT), 2012-2026 Renault Clio (Dynamique, Iconic), and 2010-2019 Citroen DS3 (DStyle, DSport, Performance), plus 10 other vehicles, with repair costs ranging from $30 to $2,000.
Common Causes
Typical Repair Cost
Based on 13 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
This is a powertrain code, so a basic OBD-II reader can read it. These read P0116.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple code reader for engine (P) codes on many compatible OBD-II vehicles. It does not support every vehicle or hybrid/EV application, and it does NOT read body, chassis or network codes; confirm exact-vehicle compatibility before buying.
- Read & clear engine (P) codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth scanner with a companion app that reads beyond the engine module — ABS, SRS and transmission — plus manufacturer-specific codes on many vehicles.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X V3.0 Elite OBD-II Scanner
by LAUNCH
Handheld scanner covering the 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 tablet with all-system coverage and bi-directional control, so you can command a module rather than only read it.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
What you can do yourself, and what needs a shop
Reading the code, clearing it, and watching whether it returns is a driveway job with the right scanner. These steps are not:
- Module programming or software updates — needs the manufacturer software or a J2534 pass-through with a paid subscription.
- Replacing a control module — most are VIN-programmed and immobilizer-registered, so a new one does nothing until it is coded to your car.
- Airbag/SRS component work — a stored fault can deploy a live device.
If the vehicle is still under warranty, check for an open recall or technical service bulletin before buying anything — the repair may already be covered.
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Vehicles Affected (13)
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Engine Coolant Temperature Sensor / Inaccurate Temp Gauge
FAQ
What does P0116 mean?
P0116 stands for "Engine Coolant Temperature Sensor 1 Circuit Range/Performance." P0116 means the engine control module detected an engine coolant temperature (ECT) sensor reading that is within wiring limits but doesn't make sense — for example, it doesn't rise as the engine warms up, or it disagrees with other temperature data. The ECT sensor reports coolant temperature, which the computer uses for fuel mixture, ignition timing, cooling-fan control, and emissions monitors. An implausible reading can cause poor fuel economy, hard cold starts, or failed emissions readiness. It is generally drivable but should be fixed for proper engine management.
What are the most common causes of P0116?
The most common causes of P0116 are: Faulty or drifting engine coolant temperature sensor, Stuck-open thermostat (engine never reaches normal temp), Low coolant level or air in the cooling system, Wiring or connector resistance affecting the signal, Sensor reading inconsistent with intake-air temperature at cold start, Corroded sensor connector, PCM fault (less common). The specific cause varies by vehicle.
How much does it cost to fix P0116?
Repair costs for P0116 range from $30 to $2,000, depending on the vehicle and root cause.
Which vehicles are affected by P0116?
Au7o has documented P0116 across 13 vehicle models from 9 manufacturers: Audi, Chevrolet, Citroen, MINI, Peugeot, Renault, SEAT, Toyota, Volkswagen.
Sources (12)
- ForumSeat Ibiza FR TSI 1.2L - Heating Issue - Water Pump/Head Gasket? | SEATCUPRA.NET
- articleGuide to replacing the thermostat/water pump unit on the 1.4 TSI CZEA engine | SEATCUPRA.NET
- RecallCCPC / Audi Ireland - 2016 Audi A1 Airbag and Belt-Tensioner Igniter Recall
- manufacturerEngine Coolant Temperature Sensor 059919501A - Genuine Volkswagen Part
- articleVW VR6 Series — Coolant Temperature Sensor Issues - eEuroparts
- articleSigns of a Coolant Temperature Sensor Failure in Your Volkswagen - Schearer's
- articleVW Golf Coolant Leak from the Rear of the Engine - EuroX Performance
- articleReplacing the Blue Coolant Temperature Sensor in the Golf VR6 Mk3 - MyQuickFix
- Forummk3 vr6 coolant sensors - VW Vortex
- ForumCoolant leak from Temp Sensor - VW Vortex
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.