AutoCodes – Ford – P2122 2010 Ford Fusion

P2122 2010 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D' 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: P2122 2010 Ford Fusion indicates Throttle/Pedal Position Sensor/Switch 'D' 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 2,011

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 P2122 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 P2122 code sets when The accelerator pedal position (APP) sensor 1 is out of self-test range low.

OBDII Code P2122 2010 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'D' Circuit Low - AutoCodes.com — P2122 2010 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2122 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 P2122 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 P2122 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 P2122 2010 Ford Fusion Code

1. What are the common symptoms associated with OBDII code P2122 on a 2010 Ford Fusion?

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

2. What does the Throttle/Pedal Position Sensor/Switch 'D' Circuit Low code P2122 indicate for a 2010 Ford Fusion?

- The code P2122 indicates that the voltage signal from the throttle position sensor or pedal position sensor in circuit 'D' is lower than expected.

3. What are the possible causes of OBDII code P2122 on a 2010 Ford Fusion?

- Possible causes include a faulty throttle position sensor, pedal position sensor, damaged wiring or connectors in circuit 'D', or an issue with the vehicle's PCM.

4. How can I diagnose the Throttle/Pedal Position Sensor/Switch 'D' Circuit Low code P2122 on my 2010 Ford Fusion?

- Diagnosing code P2122 involves checking the throttle and pedal position sensor readings with a scan tool, inspecting the wiring for damage, and testing sensor resistance.

5. Can driving with OBDII code P2122 on a 2010 Ford Fusion cause further damage?

- Continuing to drive with code P2122 can potentially cause damage to other components and result in poor engine performance, so it is recommended to address the issue promptly.

6. How can I repair OBDII code P2122 on my 2010 Ford Fusion?

- Repairing code P2122 may involve replacing the faulty throttle position sensor or pedal position sensor, repairing damaged wiring, or addressing any issues with the PCM.

7. Is it safe to drive my 2010 Ford Fusion with OBDII code P2122 present?

- It is not recommended to drive the vehicle with code P2122 active, as it can lead to unsafe driving conditions and potential further damage to the engine.

8. Can a DIY enthusiast fix OBDII code P2122 on a 2010 Ford Fusion?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address code P2122 by following repair guides and utilizing diagnostic equipment.

9. How much does it typically cost to repair OBDII code P2122 on a 2010 Ford Fusion at a professional mechanic?

- The cost of repairing code P2122 can vary depending on the exact cause, but it may range from $150 to $500 at a professional mechanic, including parts and labor.

10. Will resetting the OBDII code P2122 on my 2010 Ford Fusion make the issue go away?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing code P2122 is not addressed, the code is likely to reappear.