AutoCodes – Ford – P2128 2010 Ford Fusion

P2128 2010 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 2010 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 2,000

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 2010 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 2010 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'E' Circuit High - AutoCodes.com — P2128 2010 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'E' Circuit High

What does this mean?

What are the Possible Causes of the DTC P2128 2010 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 2010 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 2010 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 2010 Ford Fusion Code

What does the OBDII code P2128 mean for a 2010 Ford Fusion?

The OBDII code P2128 indicates a high voltage reading in the Throttle/Pedal Position Sensor/Switch 'E' circuit, which can affect the vehicle's throttle control.

What are common symptoms of the P2128 code?

Common symptoms include reduced engine power, poor acceleration, the check engine light illuminating, and potential stalling or hesitation during driving.

What could cause the P2128 code to trigger?

Possible causes include a faulty throttle position sensor, damaged wiring or connectors in the circuit, or issues with the engine control module (ECM).

How can I diagnose the P2128 code?

To diagnose the P2128 code, start by checking the throttle position sensor for proper function, inspect wiring and connectors for damage, and use a multimeter to test voltage readings in the circuit.

What are some common repairs for the P2128 code?

Common repairs include replacing the throttle position sensor, repairing or replacing damaged wiring or connectors, and reprogramming or replacing the engine control module if it is faulty.

Can I drive my 2010 Ford Fusion with the P2128 code?

It is not recommended to drive the vehicle with the P2128 code as it can result in reduced power and control, potentially leading to unsafe driving conditions.

How can I prevent the P2128 code from occurring in the future?

Regular maintenance, checking for and addressing any electrical issues promptly, and ensuring that all sensors are functioning correctly can help prevent the occurrence of the P2128 code.

Will clearing the P2128 code fix the problem?

Clearing the code may turn off the check engine light temporarily, but the underlying issue must be addressed for the code not to reappear.

What should I do if I can't find the source of the P2128 code?

If you're unable to diagnose the issue, consider seeking help from a professional mechanic who has experience with OBDII codes and can perform advanced diagnostics.