AutoCodes – Ford – P2127 Ford

P2127 Ford 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 Ford 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 37,425

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

What does this mean?

What are the Possible Causes of the DTC P2127 Ford?

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 Ford?

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 Ford 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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Information for Specific Ford Models

P2127 2006 Ford Fusion — Throttle/Pedal Position Sensor/Switch 'E' Circuit Low
P2127 2007 Ford Fusion — Throttle/Pedal Position Sensor/Switch 'E' Circuit Low
P2127 2008 Ford Fusion — Throttle/Pedal Position Sensor/Switch 'E' Circuit Low
P2127 2009 Ford Fusion — Throttle/Pedal Position Sensor/Switch 'E' Circuit Low
P2127 2010 Ford Fusion — Throttle/Pedal Position Sensor/Switch 'E' Circuit Low
P2127 2011 Ford Fusion — Throttle/Pedal Position Sensor/Switch 'E' Circuit Low
P2127 2012 Ford Fusion — Throttle/Pedal Position Sensor/Switch 'E' Circuit Low

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 Ford Code

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

- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into "limp mode."

2. What are the possible causes of OBDII code P2127 in a Ford related to the Throttle/Pedal Position Sensor/Switch 'E' Circuit Low?

- The code P2127 can be triggered by issues such as a faulty throttle position sensor, damaged wiring or connectors, or a problem with the electronic control module.

3. How can I diagnose the Throttle/Pedal Position Sensor/Switch 'E' Circuit Low issue in my Ford vehicle?

- Diagnosing this issue typically involves using an OBDII scanner to read the fault codes, checking the throttle position sensor's voltage, and inspecting the wiring and connectors for any visible damage.

4. Can I drive my Ford with OBDII code P2127, or should I have it repaired immediately?

- It is not recommended to drive your vehicle with this code present, as it can lead to further damage and potentially unsafe driving conditions. It is best to have the issue diagnosed and repaired as soon as possible.

5. How much does it cost to repair OBDII code P2127 in a Ford?

- The cost of repairing this code can vary depending on the exact cause of the issue, but it may involve replacing the throttle position sensor or repairing the wiring. Costs can range from a few hundred to a few thousand dollars.

6. Are there any DIY repair tips for fixing OBDII code P2127 in a Ford?

- DIY repair tips include checking for loose or damaged wiring, cleaning the throttle body, and ensuring proper connections to the throttle position sensor.

7. Will resetting the OBDII code P2127 in my Ford make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to return. It is important to diagnose and repair the root cause of the problem.

8. Can a faulty throttle position sensor cause other issues in addition to triggering OBDII code P2127?

- Yes, a faulty throttle position sensor can cause issues such as poor fuel economy, rough idling, and difficulty shifting gears in an automatic transmission vehicle.

9. How long does it typically take to repair OBDII code P2127 in a Ford at a professional repair shop?

- The repair time can vary depending on the exact cause of the issue and the shop's workload, but it may take a few hours to a full day to diagnose and repair the problem.

10. Is it possible for a DIY enthusiast to replace the throttle position sensor to fix OBDII code P2127 in a Ford?

- Yes, replacing the throttle position sensor can be a straightforward DIY task for those with some mechanical knowledge and the right tools. However, proper diagnosis is crucial to ensure the sensor is the true culprit.