If your vehicle’s onboard diagnostic system has thrown a P1114 code, it’s telling you that the intake air temperature sensor 2 circuit is malfunctioning. This sensor plays a critical role in helping your engine run efficiently, so it’s essential to address the issue promptly. But what’s causing the problem? Is it a faulty sensor, damaged wiring, or something more complex? You’ll need to investigate further to determine the root cause and prevent poor engine performance, decreased fuel efficiency, and increased emissions.
Key Takeaways
- The P1114 code indicates a low circuit voltage in the intake air temperature sensor, affecting engine performance and fuel efficiency.
- Common causes include sensor malfunction, wiring damage, poor electrical connections, engine coolant temperature sensor failure, and PCM/ECM issues.
- Symptoms may include a Check Engine Light, poor engine performance, decreased fuel efficiency, engine stalling, and difficulty starting the engine.
- Diagnosis involves retrieving trouble codes, reviewing live data, and inspecting the sensor, wiring, and electrical connections for signs of damage or corrosion.
- Regular maintenance, such as cleaning and replacing the air filter, can help prevent the issue from happening again and improve overall engine health.
What Is Code P1114
Within the sphere of automotive diagnostics, Code P1114 is a specific trouble code that alerts you to a critical issue affecting your vehicle’s engine performance.
This code is directly related to the intake air temperature sensor, which measures the temperature of the air entering the engine.
The sensor’s data is vital for the engine control module to calculate the proper air-fuel mixture, ensuring peak engine performance.
A faulty sensor can lead to incorrect fuel delivery and ignition timing, resulting in poor engine performance, decreased fuel efficiency, and increased emissions.
Even a dirty or clogged air filter can contribute to this issue, as it restricts airflow and affects the sensor’s precision.
Common Causes of P1114
You’re likely wondering what’s causing the P1114 code to trigger in the first place.
The culprit might be a sensor malfunction, where the intake air temperature sensor itself is faulty, providing incorrect readings to the engine control module.
Another common cause is wiring damage, such as corroded or damaged wiring connecting the sensor to the ECM, which can cause a low voltage signal.
Additionally, poor electrical connections at the sensor or ECM can lead to a low signal, triggering the code.
Other potential causes include engine coolant temperature sensor failure, PCM/ECM issues, or a faulty intake air temperature sensor.
Symptoms of P1114 Code
Frequently, the first indication that something is amiss is the illumination of the Check Engine Light on your dashboard, which is often accompanied by other symptoms. You may notice a decrease in Fuel Efficiency, which can be frustrating and costly. Additionally, you may experience Engine Stalling, which can be dangerous, especially when driving on the highway.
| Symptoms | Description |
|---|---|
| Check Engine Light | Illuminates on the dashboard, indicating a problem |
| Poor Engine Performance | Hesitation, stalling, or rough idling due to incorrect fuel delivery |
| Decreased Fuel Efficiency | Engine running rich, leading to lower gas mileage |
| Engine Stalling | Engine shutting off while driving, potentially causing accidents |
How to Diagnose P1114
Diagnosing the P1114 code requires a thorough approach to identify the root cause of the issue.
You’ll need to use scan tool methods to retrieve trouble codes and data related to the intake air temperature sensor. Consult your vehicle’s repair manual for specific diagnostic procedures.
Begin by connecting a scan tool to the OBD-II port and retrieving the trouble code data.
Review the live data to see if the intake air temperature sensor is functioning within the specified range.
If not, you may need to perform additional tests, such as monitoring the sensor’s voltage or resistance, to pinpoint the problem.
Follow a systematic approach to eliminate potential causes, and consult factory service manuals if needed.
Inspecting the Sensor and Wiring
One crucial step in troubleshooting the P1114 code is visually inspecting the intake air temperature sensor and its wiring.
You’ll want to check the sensor connectors for any signs of corrosion, damage, or wear. Make sure they’re securely connected to the wiring harnesses.
Inspect the wiring harnesses themselves for any signs of damage, such as cuts, frays, or burn marks. Look for any signs of water or moisture intrusion, which can cause corrosion and shorts.
Check the sensor’s electrical connections to the engine control module (ECM) for any signs of corrosion or wear.
A thorough visual inspection can help you identify any obvious issues that may be causing the P1114 code.
Testing Sensor Resistance
With the visual inspection complete, you’ll need to take a closer look at the sensor’s electrical properties to determine if it’s functioning properly. This involves testing the sensor’s resistance to verify it falls within the specified range.
| Sensor Calibration | Multimeter Reading |
|---|---|
| 20°C (68°F) | 2.5kΩ ± 10% |
| 30°C (86°F) | 2.2kΩ ± 10% |
| 40°C (104°F) | 1.9kΩ ± 10% |
| 50°C (122°F) | 1.6kΩ ± 10% |
| 60°C (140°F) | 1.3kΩ ± 10% |
Using a multimeter, set it to the ohms function and connect the leads to the sensor’s terminals. Take note of the reading and compare it to the values in the table above. If the reading is outside the specified range, it may indicate a faulty sensor. Remember to consult your vehicle’s repair manual for specific instructions and calibration values for your particular sensor.
Replacing the Faulty Sensor
Now that you’ve verified the sensor’s resistance is out of range, it’s likely the faulty sensor is causing the P1114 code.
Sensor failure is a common culprit behind this issue, often resulting from electrical issues such as wiring problems or poor connections.
To replace the faulty sensor, start by disconnecting the electrical connector from the sensor. Then, remove the sensor from its mounting location, taking care not to damage any surrounding components.
Install the new sensor, certifying it’s securely fastened and properly connected to the wiring harness. Finally, reconnect the electrical connector and test the sensor to confirm it’s functioning correctly.
Remember to follow the manufacturer’s guidelines for sensor replacement to avoid any potential issues.
Clearing the Trouble Codes
After replacing the faulty intake air temperature sensor, you’ll need to clear the trouble codes to reset the engine control module (ECM) and verify the issue is fully resolved.
You can use a scan tool to connect to the onboard diagnostic (OBD-II) system and retrieve the trouble codes. Once connected, follow the scan tool’s instructions to clear the codes.
This will reset the ECM and erase the stored data. After clearing the codes, take the vehicle for a test drive to confirm the Check Engine Light doesn’t come back on.
If the light remains off, it indicates that the issue has been resolved. Remember to always follow the manufacturer’s guidelines for code clearing and consult a professional if you’re unsure about the process.
Cost to Fix P1114 Code
Your wallet is about to take a hit as you prepare to fix the P1114 code, which can range from a minor expense to a more substantial financial burden, depending on various factors.
The cost of repairing the Intake Air Temperature Sensor 2 Circuit Low issue can vary depending on the vehicle make and model, the location of the repair shop, and the cost of the sensor itself.
Typically, the parts cost for a new intake air temperature sensor ranges from $20 to $100, while labor costs can range from $80 to $150 per hour.
Overall, the total repair cost for this issue could range from $100 to $300.
You’ll need to factor in diagnostic fees, which can add $50 to $100 to your repair estimates.
Additional Repair Information
When you’re preparing to fix the P1114 code, it’s helpful to have a clear understanding of the repair process and what to expect.
During the repair, it’s essential to perform sensor maintenance to guarantee the new intake air temperature sensor operates accurately.
Cleaning the sensor connector and wiring can help prevent future issues.
Additionally, inspecting the air intake system for any blockages or debris can improve air quality impact on the engine’s performance.
Remember to consult your vehicle’s repair manual for specific procedures and guidelines for your particular vehicle.
Preventing Future Issues
Most vehicle owners experience at least one instance of the P1114 code in their car’s lifespan, highlighting the importance of taking preventative measures to avoid future occurrences.
To prevent the Intake Air Temperature Sensor 2 Circuit Low issue from happening again, you should prioritize sensor maintenance.
Regularly inspect and clean the intake air temperature sensor to guarantee it’s free from dirt and debris.
Also, make it a habit to check and replace the air filter every 15,000 to 30,000 miles, depending on your vehicle’s manufacturer recommendations.
A clean air filter will help maintain ideal airflow, reducing the likelihood of sensor malfunction.
Conclusion
You’ve diagnosed and fixed the P1114 code, but the question remains: are you confident your engine is running at its best? Remember, a faulty intake air temperature sensor 2 circuit can lead to decreased performance, poor fuel efficiency, and increased emissions. By staying on top of sensor maintenance and addressing issues promptly, you’ll avoid costly repairs down the road and guarantee your vehicle runs smoothly and efficiently, thereby certifying optimal operation.
