P0118 – Engine Coolant Temperature Circuit High Input
Encountering the P0118 code in your Changan? Here is a complete guide to its causes, symptoms, and solutions.
WHAT DOES CODE P0118 MEAN
The P0118 trouble code indicates a problem with the Engine Coolant Temperature (ECT) circuit, specifically a high input reading. This code is triggered when the Engine Control Module (ECM) receives an implausible or high voltage signal from the ECT sensor. The Changan P0118 error may be related to a faulty ECT sensor, wiring issues, or corrosion in the circuit.
COMMON Changan MODELS AFFECTED
- Changan CS75
- Changan CS95
- Changan Raeton
- Changan Eado
- Changan Alsvin
SYMPTOMS TABLE
| Symptom | Frequency of Occurrence |
|---|---|
| Check Engine Light illumination | High |
| Engine overheating | Medium |
| Poor engine performance | Medium |
| Decreased fuel efficiency | Low |
| Erratic temperature gauge readings | Individual |
| Difficulty starting the engine | Low |
| Stalling or rough idling | Medium |
CAUSES TABLE
| Potential Cause | Probability |
|---|---|
| Faulty Engine Coolant Temperature (ECT) sensor | High |
| Wiring issues or corrosion in the ECT circuit | High |
| ECT sensor connector problems | Medium |
| Engine Control Module (ECM) issues | Low |
| Low engine coolant level | Medium |
| Blockages in the cooling system | Low |
DIAGNOSTIC STEPS
To diagnose the P0118 trouble code, follow these steps:
1. Verify the ECT sensor readings using a scan tool.
2. Inspect the ECT sensor and its circuit for any signs of damage or corrosion.
3. Check the wiring and connectors for any issues.
4. Monitor the engine coolant temperature gauge for any erratic readings.
5. Verify the engine coolant level and check for any blockages in the cooling system.
When diagnosing the P0118 code, it is essential to consult the workshop manual for your specific Changan model and engine size.
HOW TO FIX
Fixing the P0118 code typically involves replacing the faulty ECT sensor or repairing the wiring issues. In some cases, cleaning or replacing the ECT sensor connector may also be necessary. When fixing the P0118 code, it is crucial to follow proper repair procedures to avoid any further damage to the engine or its components.
IS IT SAFE TO DRIVE WITH THIS CODE
Driving with the P0118 error can lead to engine overheating, poor performance, and decreased fuel efficiency. In severe cases, it may cause engine damage or even failure. It is recommended to address the issue as soon as possible to avoid any further complications.
ESTIMATED REPAIR COST
The estimated repair cost for the P0118 code can range from $50 to $500, depending on the extent of the damage and the labor costs.
PREVENTIVE MAINTENANCE TIPS
To prevent the P0118 error, it is essential to:
1. Regularly check the engine coolant level and top it off as needed.
2. Inspect the ECT sensor and its circuit for any signs of damage or corrosion.
3. Monitor the engine coolant temperature gauge for any erratic readings.
4. Address any issues with the cooling system promptly.
When working with the P0118 code, it is crucial to consult the workshop manual for your specific Changan model and engine size. Additionally, using a scan tool to monitor the ECT sensor readings can help identify any issues with the sensor or its circuit. In some cases, cleaning or replacing the ECT sensor connector may also be necessary to resolve the issue. By following proper diagnostic and repair procedures, you can ensure a successful fix for the P0118 code.
12. FAQ
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What does code P0118 mean?
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Is it safe to drive with code P0118?
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Will the code clear itself?
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Does the sensor need to be replaced?
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How much does it cost to fix?
RELATED TROUBLE CODES
- Error P0115 on Changan — ECT sensor circuit malfunction
- Error P0116 on Changan — ECT sensor range/performance issue
- Error P0117 on Changan — ECT sensor circuit low input
- Error P0120 on Changan — ECT sensor circuit malfunction