AutoCodes – Mercury – P0114 Mercury

P0114 Mercury Code - Intake Air Temperature Sensor 1 Intermittent Or Erratic

Quick Answer

The Intake Air Temperature (IAT) sensor is built into Mass Air Flow (MAF) sensor. Common causes include Dirty Air Filter, Faulty Intake Air Temperature (IAT) Sensor, Intake Air Temperature Sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0114 Mercury indicates Intake Air Temperature Sensor 1 Intermittent Or Erratic.
Common causes: Common causes include Dirty Air Filter, Faulty Intake Air Temperature (IAT) Sensor, Intake Air Temperature Sensor harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 543

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 13, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0114 Mercury Description

The Intake Air Temperature (IAT) sensor is built into Mass Air Flow (MAF) sensor. The sensor detects intake air temperature and transmits a signal to the Powertrain Control Module (PCM). The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases in response to the temperature rise. The Intake Air Temperature signal is used as an input for various systems in the vehicle. It is used by the Powertrain Control Module to assist with the calculation of idle speed, fuel mixture, and spark advance. The Diagnostic Trouble Code (DTC) will set when the PCM detects an erratic signal from the Intake Air Temperature sensor during the system monitor test.

OBDII Code P0114 Mercury - Intake Air Temperature Sensor 1 Intermittent Or Erratic - AutoCodes.com — P0114 Mercury Code - Intake Air Temperature Sensor 1 Intermittent Or Erratic

What does this mean?

What are the Possible Causes of the DTC P0114 Mercury?

Dirty Air Filter
Faulty Intake Air Temperature (IAT) Sensor
Intake Air Temperature Sensor harness is open or shorted
Intake Air Temperature Sensor circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0114 Mercury?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Before replacing the Mass Air Flow (MAF) sensor, try replacing the air filter and cleaning the Mass Air Flow sensor with Mass Air Flow sensor cleaner. Reset code and drive the vehicle. If the code comes back, it may be necessary to replace the Mass Air Flow sensor.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0114 Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0114 Mercury code?

Need more information on how to fix the P0114 Mercury code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0114 Mercury Code

1. What are common symptoms of OBDII code P0114 in a Mercury related to the Intake Air Temperature Sensor 1?

The common symptoms include poor fuel economy, rough idling, engine stalling, and a decrease in overall engine performance.

2. What are some possible causes of the Intake Air Temperature Sensor 1 intermittent or erratic error code in a Mercury?

Possible causes include a faulty intake air temperature sensor, damaged wiring or connectors, a dirty air filter, or issues with the engine's air intake system.

3. How can I diagnose the Intake Air Temperature Sensor 1 issue in my Mercury?

You can use an OBDII scanner to read the error code and check the intake air temperature sensor for proper operation. Inspect the sensor's wiring and connectors for any damage or corrosion.

4. Can driving with the P0114 code in my Mercury cause further damage?

Continuing to drive with the Intake Air Temperature Sensor 1 error code may lead to reduced engine performance, decreased fuel efficiency, and potential damage to other engine components over time.

5. How can I repair the Intake Air Temperature Sensor 1 intermittent or erratic issue in my Mercury?

To repair the issue, you may need to replace the faulty intake air temperature sensor, repair or replace damaged wiring or connectors, clean or replace the air filter, and ensure proper functioning of the air intake system.

6. Are there any DIY tips for fixing the P0114 code in a Mercury?

While some repairs may require professional assistance, you can try cleaning the intake air temperature sensor, checking for loose or damaged connections, and inspecting the air filter on your own.

7. Will resetting the error code resolve the Intake Air Temperature Sensor 1 issue in my Mercury?

Resetting the error code may temporarily clear the warning light, but it will not fix the underlying problem causing the P0114 code. Proper diagnosis and repair are necessary to address the issue effectively.

8. How important is the Intake Air Temperature Sensor for the overall performance of my Mercury?

The Intake Air Temperature Sensor plays a crucial role in determining the air-fuel mixture ratio in the engine, affecting fuel efficiency, emissions, and overall engine performance. It is vital for the proper operation of your vehicle.

9. Can extreme weather conditions affect the Intake Air Temperature Sensor's performance in a Mercury?

Yes, extreme temperatures can impact the accuracy and performance of the intake air temperature sensor, leading to potential issues with engine operation and triggering the P0114 error code.

10. Is it safe to drive my Mercury with the Intake Air Temperature Sensor 1 error code?

While your vehicle may still be operational with the error code present, it is recommended to address the issue promptly to avoid potential performance issues, reduced fuel efficiency, and further damage to the engine.