AutoCodes – Ford – P2123 2007 Ford Fusion

P2123 2007 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D' 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: P2123 2007 Ford Fusion indicates Throttle/Pedal Position Sensor/Switch 'D' 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 2,195

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 P2123 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 P2123 code sets when The accelerator pedal position (APP) sensor 1 is out of self-test range high.

OBDII Code P2123 2007 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'D' Circuit High - AutoCodes.com — P2123 2007 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D' Circuit High

What does this mean?

What are the Possible Causes of the DTC P2123 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 P2123 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 P2123 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 P2123 2007 Ford Fusion Code

1. What are the common symptoms of OBDII code P2123 in a 2007 Ford Fusion?

The common symptoms of OBDII code P2123 in a 2007 Ford Fusion include loss of power, hesitation or stalling, and the vehicle going into limp mode.

2. What could cause the Throttle/Pedal Position Sensor/Switch 'D' Circuit High code in a 2007 Ford Fusion?

The code P2123 in a 2007 Ford Fusion is typically caused by a faulty throttle position sensor, damaged wiring or connectors, or a problem with the throttle pedal position sensor.

3. How can I diagnose the Throttle/Pedal Position Sensor/Switch 'D' Circuit High code in my 2007 Ford Fusion?

Diagnosing OBDII code P2123 in a 2007 Ford Fusion involves using a scan tool to check for the code, testing the throttle position sensor and pedal position sensor, and inspecting the wiring and connectors for any damage.

4. Can I still drive my 2007 Ford Fusion with the P2123 code present?

It is not recommended to drive your 2007 Ford Fusion with the P2123 code present as it can lead to performance issues, stalling, or other safety concerns.

5. How can I repair the Throttle/Pedal Position Sensor/Switch 'D' Circuit High code in my 2007 Ford Fusion?

To repair OBDII code P2123 in a 2007 Ford Fusion, you may need to replace the faulty throttle position sensor, repair any damaged wiring or connectors, or recalibrate the sensors using a scan tool.

6. Will resetting the OBDII code P2123 in my 2007 Ford Fusion make it go away permanently?

Resetting the OBDII code P2123 in a 2007 Ford Fusion may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to reappear.

7. Can a DIY enthusiast fix the P2123 code in a 2007 Ford Fusion?

A DIY enthusiast may be able to fix the P2123 code in a 2007 Ford Fusion by following proper diagnostic procedures, but it is recommended to have a professional mechanic assess and repair the issue for accurate results.

8. How much does it typically cost to repair the Throttle/Pedal Position Sensor/Switch 'D' Circuit High code in a 2007 Ford Fusion?

The cost to repair the P2123 code in a 2007 Ford Fusion can vary depending on the extent of the issue, parts needed for replacement, and labor costs at a repair shop, but it could range from $100 to $300 or more.

9. Are there any preventive measures to avoid the OBDII code P2123 in a 2007 Ford Fusion?

To prevent the occurrence of OBDII code P2123 in a 2007 Ford Fusion, it is essential to perform regular maintenance checks, avoid driving aggressively, and address any sensor or wiring issues promptly.

10. Will the P2123 code affect the fuel efficiency of my 2007 Ford Fusion?

Yes, the presence of the P2123 code in a 2007 Ford Fusion can impact fuel efficiency due to potential performance issues and the engine going into limp mode, affecting overall driving dynamics and mileage.