AutoCodes – Ford – P2128 2007 Ford Fusion

P2128 2007 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'E' Circuit High

Quick Answer

The Accelerator Pedal Position (APP) sensor is an input to the Powertrain Control Module (PCM) and used to determine the amount of torque requested by the operator. Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position (APP) Sensor harness is open or shorted, Accelerator Pedal Position (APP) Sensor circuit poor electrical connection. 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: P2128 2007 Ford Fusion indicates Throttle/Pedal Position Sensor/Switch 'E' Circuit High.
Common causes: Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position (APP) Sensor harness is open or shorted, Accelerator Pedal Position (APP) Sensor circuit poor electrical connection.
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 2,009

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

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Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2128 2007 Ford Fusion Description

The Accelerator Pedal Position (APP) sensor is an input to the Powertrain Control Module (PCM) and used to determine the amount of torque requested by the operator. There are 2 pedal position signals in the sensor. Both signals, APP and APP2, have a positive slope (increasing angle, increasing voltage), but are offset and increase at different rates. The 2 pedal position signals make sure the PCM receives a correct input even if 1 signal has a concern. The PCM determines if a signal is incorrect by calculating where it should be, inferred from the other signals. If a concern is present with one of the circuits the other input is used. There are 2 reference voltage circuits, 2 signal return circuits, and 2 signal circuits (a total of 6 circuits and pins) between the PCM and the APP sensor assembly. The pedal position signal is converted to pedal travel degrees (rotary angle) by the PCM. The software converts these degrees to counts, which is the input to the torque based strategy. The accelerator pedal position (APP) sensor 2 is out of self-test range high.

OBDII Code P2128 2007 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'E' Circuit High - AutoCodes.com — P2128 2007 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'E' Circuit High

What does this mean?

What are the Possible Causes of the DTC P2128 2007 Ford Fusion?

Faulty Accelerator Pedal Position (APP) Sensor
Accelerator Pedal Position (APP) Sensor harness is open or shorted
Accelerator Pedal Position (APP) Sensor circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P2128 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2128 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.

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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 P2128 2007 Ford Fusion Code

1. What are the common symptoms of OBDII code P2128 in a 2007 Ford Fusion?

The common symptoms of code P2128 include reduced engine power, acceleration hesitation, and the illumination of the check engine light.

2. What does the OBDII code P2128 'Throttle/Pedal Position Sensor/Switch 'E' Circuit High' mean for a 2007 Ford Fusion?

Code P2128 indicates that the voltage signal from the throttle or pedal position sensor/switch 'E' circuit is higher than normal, potentially causing issues with the vehicle's throttle control system.

3. What are the possible causes of OBDII code P2128 in a 2007 Ford Fusion?

Potential causes of code P2128 include a faulty throttle position sensor, damaged wiring or connectors in the throttle control circuit, or issues with the engine control module.

4. How can I diagnose the OBDII code P2128 in my 2007 Ford Fusion?

Diagnosing code P2128 typically involves using a scan tool to check for the code, testing the throttle position sensor's voltage output, inspecting the wiring and connectors for damage, and verifying the functionality of related components.

5. Is it safe to continue driving my 2007 Ford Fusion with OBDII code P2128 present?

It is not recommended to drive your vehicle with code P2128 present, as it can lead to reduced engine power and potential safety hazards due to throttle control issues.

6. Can I repair OBDII code P2128 in my 2007 Ford Fusion myself?

Repairing code P2128 may require technical knowledge and experience with automotive electrical systems. It is recommended to consult a professional mechanic to properly diagnose and repair the issue.

7. How much does it typically cost to repair OBDII code P2128 in a 2007 Ford Fusion?

The cost of repairing code P2128 can vary depending on the exact cause of the issue. It may involve replacing the throttle position sensor, repairing damaged wiring, or addressing other related components, so costs can range from a few hundred to over a thousand dollars.

8. Can a dirty throttle body cause OBDII code P2128 in a 2007 Ford Fusion?

While a dirty throttle body can affect throttle response and performance, it is unlikely to directly cause code P2128. However, it is still important to keep the throttle body clean as part of regular maintenance.

9. Will resetting the OBDII code P2128 in my 2007 Ford Fusion make it go away permanently?

Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing code P2128 is not addressed, the code is likely to return. It is crucial to diagnose and repair the root cause of the problem.

10. How long does it take to repair OBDII code P2128 in a 2007 Ford Fusion?

The repair time for code P2128 can vary depending on the exact cause and complexity of the issue. It may take a few hours to a full day to diagnose and repair the problem, so it's best to consult a professional mechanic for an accurate estimate.