AutoCodes – Ford – P2128 2011 Ford Fusion

P2128 2011 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 2011 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 1,881

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 2011 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 2011 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'E' Circuit High - AutoCodes.com — P2128 2011 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'E' Circuit High

What does this mean?

What are the Possible Causes of the DTC P2128 2011 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 2011 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 2011 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 2011 Ford Fusion Code

1. What are the common symptoms of OBDII code P2128 on a 2011 Ford Fusion?

- Common symptoms include the check engine light coming on, reduced engine power, hesitation or stalling when accelerating, and potential issues with the vehicle's throttle response.

2. What does the OBDII code P2128 on a 2011 Ford Fusion indicate?

- This code indicates a problem with the Throttle/Pedal Position Sensor/Switch 'E' Circuit High, suggesting a potential issue with the sensor or its related circuitry.

3. What are the possible causes of OBDII code P2128 on a 2011 Ford Fusion?

- Possible causes include a faulty throttle position sensor, a malfunctioning pedal position sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module.

4. How can I diagnose the cause of OBDII code P2128 on my 2011 Ford Fusion?

- Diagnosing the issue typically involves checking the sensor's wiring and connectors for damage, testing the sensor's resistance, and using a scan tool to monitor sensor data while operating the throttle pedal.

5. Can I continue driving my 2011 Ford Fusion with OBDII code P2128?

- It is not recommended to continue driving with this code present, as it can lead to performance issues and potential safety concerns. It's best to address the underlying problem promptly.

6. How can I repair OBDII code P2128 on a 2011 Ford Fusion?

- Repair options may include replacing the faulty throttle position sensor, addressing wiring or connector issues, resetting the engine control module, or seeking professional assistance for a comprehensive diagnosis and repair.

7. Are there any DIY tips for resolving OBDII code P2128 on a 2011 Ford Fusion?

- DIY tips may include checking for loose or damaged wiring, ensuring proper sensor connections, and resetting the trouble code using an OBDII scanner after addressing any visible issues.

8. Can a dirty throttle body cause OBDII code P2128 on a 2011 Ford Fusion?

- While a dirty throttle body can contribute to related issues, OBDII code P2128 specifically points to a problem with the Throttle/Pedal Position Sensor/Switch 'E' Circuit High, which is more likely related to the sensor or its circuitry.

9. How much does it cost to fix OBDII code P2128 on a 2011 Ford Fusion?

- The cost of fixing this code can vary depending on the underlying cause, parts needed for replacement, and whether you choose to do the repair yourself or seek professional assistance. It's advisable to obtain estimates from local mechanics or repair shops.

10. Is it necessary to reset the vehicle's computer after fixing OBDII code P2128 on a 2011 Ford Fusion?

- It is recommended to reset the vehicle's computer after fixing the issue to clear the trouble code and ensure that the repairs have been successful. This can be done using an OBDII scanner or by disconnecting the car's battery for a few minutes.