P0116 – Engine Coolant Temperature Circuit Range/Performance
The P0116 error code on Geely is a fairly common issue that many drivers face.
WHAT DOES CODE P0116 MEAN
The P0116 error code indicates a problem with the Engine Coolant Temperature (ECT) circuit, specifically that the signal from the ECT sensor is outside the expected range or is not performing as expected. This can be caused by a variety of factors, including a faulty ECT sensor, wiring issues, or a malfunctioning Engine Control Module (ECM). The ECT sensor is a critical component of the engine management system, as it provides the ECM with the information needed to calculate the correct air-fuel mixture and ignition timing.
COMMON Geely MODELS AFFECTED
- Geely GC2
- Geely GX7
- Geely EC7
- Geely GC9
- Geely Boyue
SYMPTOMS
- Decreased fuel efficiency
- Engine stalling or hesitation
- Check Engine Light illumination
- Engine overheating
- Poor engine performance
- Difficulty starting the engine
- Engine running rich or lean
CAUSES TABLE
| Potential Cause | Probability (High/Medium/Low) |
|---|---|
| Faulty Engine Coolant Temperature (ECT) sensor | High |
| Wiring issues or corrosion | Medium |
| Malfunctioning Engine Control Module (ECM) | Low |
| Low engine coolant level | Medium |
| Blockages or leaks in the cooling system | Medium |
| Incorrect ECT sensor installation | Low |
DIAGNOSTIC STEPS
To diagnose the P0116 error code, start by checking the ECT sensor and its wiring for any signs of damage or corrosion. Use a multimeter to check the voltage readings from the ECT sensor, which should change smoothly depending on engine RPM and temperature. Next, check the engine coolant level and look for any blockages or leaks in the cooling system. If the problem persists, use a scan tool to monitor the ECT sensor signal and check for any other related trouble codes.
HOW TO FIX
The primary repair method for the P0116 error code is to replace the faulty ECT sensor. This can usually be done by a DIY mechanic with basic tools and knowledge. However, if the problem is more complex, such as a malfunctioning ECM or wiring issues, it may be necessary to seek the assistance of a professional mechanic. In some cases, it may also be necessary to repair or replace other components, such as the engine coolant temperature gauge or the cooling system.
IS IT SAFE TO DRIVE WITH THIS CODE
Driving with the P0116 error code active can pose some technical risks, as the engine may be running rich or lean, which can cause decreased fuel efficiency and potential engine damage. Additionally, the engine may stall or hesitate, which can be a safety hazard, especially when driving in heavy traffic or at high speeds. It is recommended to address the issue as soon as possible to avoid any potential problems.
ESTIMATED REPAIR COST
The estimated repair cost for the P0116 error code can vary depending on the specific cause of the problem and the labor rates of the mechanic. However, on average, the cost of replacing a faulty ECT sensor can range from $50 to $200, depending on the quality of the replacement sensor and the labor rates of the mechanic. If the problem is more complex, such as a malfunctioning ECM or wiring issues, the repair cost can be significantly higher, ranging from $500 to $1,500 or more.
PREVENTIVE MAINTENANCE TIPS
To prevent the P0116 error code from occurring, it is recommended to regularly check the engine coolant level and look for any signs of leaks or blockages in the cooling system. Additionally, it is a good idea to use a high-quality ECT sensor and to follow the manufacturer’s recommended installation procedures. Regularly scanning the vehicle’s onboard computer for any trouble codes can also help to identify potential problems before they become major issues.
RELATED TROUBLE CODES
- Error P0126 on Geely — insufficient coolant temperature for closed-loop fuel control
- Error P0128 on Geely — coolant temperature below thermostat regulating temperature
- Error P0133 on Geely — oxygen sensor circuit slow response
- Error P0141 on Geely — oxygen sensor heater circuit malfunction