AutoCodes – Ford – P2122 2012 Ford Fusion

P2122 2012 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 2012 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 2,395

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

OBDII Code P2122 2012 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'D' Circuit Low - AutoCodes.com — P2122 2012 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2122 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 P2122 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 P2122 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 P2122 2012 Ford Fusion Code

1. What are the common symptoms of OBDII code P2122 in a 2012 Ford Fusion?

The common symptoms of code P2122 include poor acceleration, reduced engine power, and the vehicle going into limp mode.

2. What does the OBDII code P2122 indicate in a 2012 Ford Fusion?

OBDII code P2122 in a 2012 Ford Fusion indicates an issue with the Throttle/Pedal Position Sensor/Switch 'D' Circuit being too low.

3. What are the possible causes of OBDII code P2122 in a 2012 Ford Fusion?

The possible causes of code P2122 in a 2012 Ford Fusion can include a faulty throttle position sensor, damaged wiring or connectors, or issues with the throttle body.

4. How can I diagnose the cause of OBDII code P2122 in my 2012 Ford Fusion?

Diagnosing code P2122 may involve checking the throttle position sensor for proper operation, inspecting wiring for damage, and using a scan tool to monitor sensor readings.

5. Can I still drive my 2012 Ford Fusion with OBDII code P2122?

It is not recommended to drive your Ford Fusion with code P2122 as it can lead to further damage and safety hazards. It's best to address the issue promptly.

6. How can I repair OBDII code P2122 in my 2012 Ford Fusion?

Repairing code P2122 may involve replacing the throttle position sensor, repairing damaged wiring, or cleaning the throttle body to ensure proper functionality.

7. Will resetting the OBDII code P2122 in my 2012 Ford Fusion make it go away permanently?

Simply resetting the code without addressing the underlying issue will not make it go away permanently. The root cause of the problem needs to be identified and fixed.

8. Are there any preventive measures to avoid OBDII code P2122 in a 2012 Ford Fusion?

Regular maintenance, such as cleaning the throttle body and ensuring proper electrical connections, can help prevent issues that may trigger code P2122.

9. Is it necessary to visit a mechanic for OBDII code P2122 in a 2012 Ford Fusion?

While some DIY enthusiasts may be able to diagnose and fix code P2122, it's recommended to seek professional help, especially if you're unsure about the repairs needed.

10. Can OBDII code P2122 in a 2012 Ford Fusion cause permanent damage if left unresolved?

Continuing to drive with code P2122 can potentially cause damage to the engine or other components, so it's crucial to address the issue promptly to avoid costly repairs.