AutoCodes – Ford – P2123 2011 Ford Fusion

P2123 2011 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 2011 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,645

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

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

OBDII Code P2123 2011 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'D' Circuit High - AutoCodes.com — P2123 2011 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D' Circuit High

What does this mean?

What are the Possible Causes of the DTC P2123 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 P2123 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 P2123 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.

Need more information about the P2123 2011 Ford Fusion code?

Need more information on how to fix the P2123 2011 Ford Fusion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2123 2011 Ford Fusion code diagnosed by a professional: Find a repair shop in your area

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 2011 Ford Fusion Code

1. What are the common symptoms of OBDII code P2123 in a 2011 Ford Fusion?

The common symptoms of OBDII code P2123 include issues with acceleration, reduced engine power, stalling, and potentially even the vehicle going into "limp mode."

2. What can cause the Throttle/Pedal Position Sensor/Switch 'D' Circuit High code P2123 in a 2011 Ford Fusion?

The P2123 code in a 2011 Ford Fusion is typically caused by a faulty throttle position sensor, a problem with the pedal position sensor, damaged wiring, or a corroded connector.

3. How serious is OBDII code P2123 in a 2011 Ford Fusion?

While the severity of the issue can vary, it is generally recommended to address code P2123 promptly to prevent potential safety hazards and further damage to the vehicle.

4. Can I continue driving my 2011 Ford Fusion with OBDII code P2123?

It is not advisable to continue driving your Ford Fusion with code P2123 as it can lead to performance issues, safety concerns, and potential further damage to the vehicle.

5. How can I diagnose OBDII code P2123 in my 2011 Ford Fusion?

Diagnosing OBDII code P2123 involves using an OBDII scanner to retrieve the code, visually inspecting the throttle and pedal position sensors, checking for damaged wiring, and testing the sensor's voltage.

6. What are the repair options for OBDII code P2123 in a 2011 Ford Fusion?

Repair options for code P2123 may include replacing the throttle position sensor, fixing any wiring issues, cleaning or replacing connectors, or seeking assistance from a qualified mechanic for a thorough diagnosis and repair.

7. Can I reset OBDII code P2123 in my 2011 Ford Fusion by disconnecting the battery?

While disconnecting the battery may reset the code temporarily, it is important to address the underlying issue causing code P2123 to prevent it from reoccurring.

8. How much does it cost to repair OBDII code P2123 in a 2011 Ford Fusion?

The cost of repairing code P2123 can vary depending on the extent of the issue, the parts needed for replacement, and whether you choose to do the repair yourself or seek professional help.

9. Will OBDII code P2123 cause my 2011 Ford Fusion to fail an emissions test?

Yes, if left unaddressed, code P2123 can cause your Ford Fusion to fail an emissions test due to the impact it has on the vehicle's performance and emissions system.

10. How long does it take to repair OBDII code P2123 in a 2011 Ford Fusion?

The repair time for code P2123 can vary based on the exact cause of the issue, the availability of parts, and whether you are performing the repair yourself or relying on a professional technician.