AutoCodes – Ford – P2127 2012 Ford Fusion

P2127 2012 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'E' Circuit Low

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: P2127 2012 Ford Fusion indicates Throttle/Pedal Position Sensor/Switch 'E' Circuit Low.
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 2,938

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2127 2012 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 low.

OBDII Code P2127 2012 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'E' Circuit Low - AutoCodes.com — P2127 2012 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'E' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2127 2012 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 P2127 2012 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 P2127 2012 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 P2127 2012 Ford Fusion Code

1. What are the common symptoms of OBDII code P2127 in a 2012 Ford Fusion?

- Common symptoms include reduced engine power, poor acceleration, and the vehicle going into limp mode.

2. What does the OBDII code P2127 'Throttle/Pedal Position Sensor/Switch 'E' Circuit Low' mean in a 2012 Ford Fusion?

- This code indicates that the voltage signal from the throttle/pedal position sensor or switch 'E' is lower than expected.

3. What are the possible causes of OBDII code P2127 in a 2012 Ford Fusion?

- Possible causes include a faulty throttle/pedal position sensor, damaged wiring or connectors, or issues with the electronic throttle control system.

4. How can I diagnose the OBDII code P2127 in my 2012 Ford Fusion?

- Diagnosis typically involves checking the throttle/pedal position sensor's wiring and connectors, testing the sensor's voltage output, and inspecting the throttle body.

5. Can I continue driving my 2012 Ford Fusion with OBDII code P2127?

- It is not recommended to continue driving with this code as it can lead to performance issues and potentially unsafe driving conditions.

6. How can I repair OBDII code P2127 in my 2012 Ford Fusion?

- Repair options may include replacing the throttle/pedal position sensor, repairing damaged wiring or connectors, or resetting the electronic throttle control system.

7. Is it possible to reset the OBDII code P2127 in a 2012 Ford Fusion without repairs?

- While clearing the code may temporarily turn off the check engine light, it is essential to address the underlying issue to prevent further problems.

8. Will OBDII code P2127 cause permanent damage to my 2012 Ford Fusion?

- Ignoring this code can lead to performance issues and potential damage to the engine over time if not addressed promptly.

9. How much does it typically cost to repair OBDII code P2127 in a 2012 Ford Fusion?

- The cost of repairs can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $100 to $500 or more.

10. Can a DIY enthusiast fix OBDII code P2127 in a 2012 Ford Fusion?

- While some enthusiasts may have the skills to diagnose and replace components related to this code, it is recommended to consult a professional mechanic for accurate repairs.