P0117 – Engine Coolant Temperature Circuit Low Input
Introduction
The P0117 error code on Haval is a fairly common issue that many drivers face.
The **P0117 error** is often linked to a faulty engine coolant temperature sensor, which may cause the engine to run rich, leading to decreased fuel efficiency and potential engine damage. The **severity level** of this issue is generally considered medium, as it may not cause immediate engine failure but can lead to long-term damage if left unrepaired. The **urgency of repair** is moderate, as it is recommended to address the issue soon to avoid any potential complications.
WHAT DOES CODE P0117 MEAN
The P0117 trouble code indicates that the engine coolant temperature circuit is experiencing a low input, which may be associated with a faulty sensor or wiring issue. This code is related to the engine management system, specifically the temperature sensing circuit, and can impact engine performance by causing the engine to run rich or lean, leading to decreased fuel efficiency and potential engine damage. The **Haval P0117** code can also trigger other related codes, such as P0125 or P0128, which are related to the engine coolant temperature sensor circuit.
COMMON Haval MODELS AFFECTED
The P0117 error code can affect various Haval models, including:
- Haval H6
- Haval H9
- Haval F7
- Haval Jolion
- Haval Big Dog
SYMPTOMS TABLE
The following symptoms may be experienced when the P0117 code is present:
| Symptom | Frequency of Occurrence |
|---|---|
| Decreased fuel efficiency | High |
| Engine running rich or lean | Medium |
| Check Engine Light illumination | High |
| Engine stalling or hesitation | Medium |
| Increased engine temperature | Low |
| Difficulty starting the engine | Individual |
| Reduced engine power | Medium |
CAUSES TABLE
The following potential causes may be associated with the P0117 code:
| Potential Cause | Probability |
|---|---|
| Faulty engine coolant temperature sensor | High |
| Wiring issue or corrosion | Medium |
| ECU logic or software issue | Low |
| Engine coolant temperature sensor circuit malfunction | Medium |
| Intake air leak or vacuum leak | Low |
REAL-WORLD DRIVING SCENARIOS
When driving with the P0117 code, the driver may experience issues such as decreased fuel efficiency, engine stalling or hesitation, and reduced engine power. These issues may be more pronounced during cold starts, acceleration, or highway driving. The **diagnosing the P0117 code** process requires careful analysis of the engine management system and related components.
DIAGNOSTIC STEPS
To diagnose the P0117 code, the following steps can be taken:
1. Inspect the engine coolant temperature sensor and wiring for any signs of damage or corrosion.
2. Use a scan tool to analyze the engine management system and retrieve any related codes.
3. Check the wiring and connections to the engine coolant temperature sensor for any issues.
4. Perform a mechanical check of the engine to ensure there are no vacuum leaks or intake air leaks.
COMMON DIAGNOSTIC MISTAKES
Common mistakes made when diagnosing the P0117 code include:
1. Replacing the engine coolant temperature sensor without checking the wiring and connections.
2. Failing to inspect the engine management system and related components.
3. Not using a scan tool to analyze the engine management system.
4. Not checking for any related codes or symptoms.
5. Replacing the wrong component or sensor.
WHEN NOT TO REPLACE THE SENSOR
Replacing the engine coolant temperature sensor may not solve the issue if there are underlying problems with the wiring, vacuum leaks, or ECU logic. In such cases, **fixing the P0117 code** requires a more thorough diagnosis and repair of the underlying issue.
HOW TO FIX
To fix the P0117 code, the following repair methods can be taken:
1. Replace the engine coolant temperature sensor if it is faulty.
2. Repair or replace any damaged wiring or connections.
3. Address any vacuum leaks or intake air leaks.
4. Update the ECU software or logic if necessary.
SEVERITY LEVEL
The severity level of the P0117 code is generally considered medium, as it may not cause immediate engine failure but can lead to long-term damage if left unrepaired. The driving risk is medium, and the urgency of repair is moderate. The engine impact explanation is that the code can cause the engine to run rich or lean, leading to decreased fuel efficiency and potential engine damage.
IS IT SAFE TO DRIVE WITH THIS CODE
Driving with the P0117 code is not recommended, as it can cause decreased fuel efficiency, engine stalling or hesitation, and reduced engine power. The **Haval P0117** code can also trigger other related codes, which can lead to more severe engine issues if left unrepaired.
ESTIMATED REPAIR COST
The estimated repair cost for the P0117 code can range from $200 to $1,000, depending on the underlying cause and the components that need to be replaced.
PREVENTIVE MAINTENANCE TIPS
To prevent the P0117 code from occurring, regular maintenance checks should be performed, including:
1. Inspecting the engine coolant temperature sensor and wiring for any signs of damage or corrosion.
2. Checking the engine management system and related components for any issues.
3. Addressing any vacuum leaks or intake air leaks.
4. Updating the ECU software or logic if necessary.
When **diagnosing the P0117 code**, it is essential to use a scan tool to analyze the engine management system and retrieve any related codes. Additionally, a thorough inspection of the engine coolant temperature sensor and wiring is necessary to ensure accurate diagnosis and repair.
TOOLS REQUIRED FOR DIAGNOSTICS
The following tools are required for diagnosing the P0117 code:
- Scan tool
- Multimeter
- Wiring diagram
- Engine coolant temperature sensor tester
TECHNICAL REFERENCE VALUES
The following technical reference values are relevant to the P0117 code:
| Parameter | Normal Range | Fault Indication Behavior |
|---|---|---|
| Engine coolant temperature | 150-200°F | Low input or high input |
| Engine coolant temperature sensor voltage | 0.5-4.5V | Out of range or erratic signal |
18. FAQ
What does code P0117 mean?
The **P0117 error** code indicates that the engine coolant temperature circuit is experiencing a low input, which may be associated with a faulty sensor or wiring issue. The **P0117 trouble code** is related to the engine management system, specifically the temperature sensing circuit, and can impact engine performance. When **diagnosing the P0117 code**, it is essential to use a scan tool to analyze the engine management system and retrieve any related codes.
Is it safe to drive with code P0117?
Driving with the **P0117 code** is not recommended, as it can cause decreased fuel efficiency, engine stalling or hesitation, and reduced engine power. The **Haval P0117** code can also trigger other related codes, which can lead to more severe engine issues if left unrepaired. **Fixing the P0117 code** requires a thorough diagnosis and repair of the underlying issue.
Will the code clear itself?
The **P0117 error** code will not clear itself, as it is a fault code that indicates a specific issue with the engine management system. To clear the code, the underlying issue must be repaired, and the engine management system must be reset using a scan tool.
Does the sensor need replacement?
The engine coolant temperature sensor may need replacement if it is faulty or damaged. However, **diagnosing the P0117 code** requires a thorough inspection of the sensor and wiring to determine the underlying cause of the issue.
How much does it cost to fix?
The estimated repair cost for the **P0117 code** can range from $200 to $1,000, depending on the underlying cause and the components that need to be replaced. **Fixing the P0117 code** requires a thorough diagnosis and repair of the underlying issue, and the cost may vary depending on the specific repair methods and components required.
RELATED TROUBLE CODES
The following related trouble codes may be associated with the P0117 code:
- Error P0125 on Haval — faulty engine coolant temperature sensor
- Error P0128 on Haval — engine coolant temperature sensor circuit malfunction
- Error P0135 on Haval — oxygen sensor circuit malfunction
- Error P0155 on Haval — oxygen sensor heater circuit malfunction