AutoCodes – Ford – P0127 2007 Ford Fusion

P0127 2007 Ford Fusion Code - Intake Air Temperature 2 Sensor Too High

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: P0127 2007 Ford Fusion indicates Intake Air Temperature 2 Sensor Too High.
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 2,166

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 P0127 2007 Ford Fusion 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 excessively high voltage from the sensor.

OBDII Code P0127 2007 Ford Fusion - Intake Air Temperature 2 Sensor Too High - AutoCodes.com — P0127 2007 Ford Fusion Code - Intake Air Temperature 2 Sensor Too High

What does this mean?

What are the Possible Causes of the DTC P0127 2007 Ford Fusion?

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 P0127 2007 Ford Fusion?

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 P0127 2007 Ford Fusion 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 P0127 2007 Ford Fusion code?

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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 P0127 2007 Ford Fusion Code

1. What does the OBDII code P0127 on a 2007 Ford Fusion mean?

- The code P0127 indicates that the Intake Air Temperature 2 Sensor is reading a temperature that is too high.

2. What are the common symptoms of a P0127 code in a 2007 Ford Fusion?

- Common symptoms include poor engine performance, reduced fuel efficiency, and potentially an illuminated Check Engine light.

3. What are the possible causes of the Intake Air Temperature 2 Sensor Too High code on a 2007 Ford Fusion?

- Possible causes may include a faulty intake air temperature sensor, wiring issues, a dirty air filter, or a malfunctioning engine cooling system.

4. How can I diagnose the P0127 code on my 2007 Ford Fusion?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, checking the intake air temperature sensor, inspecting related wiring, and testing the cooling system.

5. Can I continue to drive my 2007 Ford Fusion with a P0127 code?

- It is recommended to address the issue promptly to prevent potential damage to the engine and ensure optimal performance.

6. How do I repair a P0127 code on a 2007 Ford Fusion?

- Repair may involve replacing the intake air temperature sensor, repairing damaged wiring, cleaning the air filter, or addressing cooling system issues.

7. Can a P0127 code on a 2007 Ford Fusion cause other problems if left untreated?

- Ignoring the P0127 code may lead to decreased fuel efficiency, engine performance issues, and potential damage to engine components over time.

8. Are there any simple DIY fixes for a P0127 code on a 2007 Ford Fusion?

- Simple fixes may include checking and cleaning the air filter, inspecting and securing sensor wiring, and ensuring proper coolant levels in the engine.

9. How long does it typically take to repair a P0127 code in a 2007 Ford Fusion?

- The repair time can vary depending on the exact cause of the issue, but it may take anywhere from 1-3 hours to diagnose and fix the problem.

10. Should I reset the Check Engine light after repairing a P0127 code on my 2007 Ford Fusion?

- Yes, it is recommended to clear the code and reset the Check Engine light using an OBDII scanner after addressing the underlying issue to ensure proper monitoring of the vehicle's systems.