P0116 on Renault: How to Diagnose & Fix
Engine Coolant Temperature Sensor 1 Circuit Range/Performance
1 Renault model · 1 documented issue · 1 critical · $200-$600 repair
P0116 on Renault by model: symptoms, diagnosis and fix
The TCe turbocharged engines develop coolant leaks from the turbocharger coolant lines and the thermostat housing. The plastic coolant connectors become brittle with age and heat exposure, causing seepage and eventual failure.
Common Symptoms
- Coolant loss
- Sweet smell from engine bay
- Low coolant warning
- Overheating risk
How to Fix
Replace the turbo coolant lines with updated metal fittings where available. Replace the thermostat housing assembly. Pressure test the cooling system after repair to verify no further leaks.
Sources for this issue (2)
P0116 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0116 mean on a Renault?
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. On Renault it is documented across 1 model: Clio.
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 on a Renault?
Published repair estimates on Renault range from $200 to $600 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.