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Engine-Codes – Ford – P2122 2012 Ford Fusion

P2122 2012 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D' Circuit Low

Quick Answer

The P2122 diagnostic trouble code for a 2012 Ford Fusion indicates an issue with the Throttle/Pedal Position Sensor/Switch 'D' Circuit being low. Common causes include Faulty Throttle/Pedal Position Sensor/Switch 'D', Wiring issues or poor electrical connections in the sensor circuit, Corrosion or damage to sensor connectors. 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 Throttle/Pedal Position Sensor/Switch 'D', Wiring issues or poor electrical connections in the sensor circuit, Corrosion or damage to sensor connectors.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P2122 2012 Ford Fusion Description

The P2122 diagnostic trouble code for a 2012 Ford Fusion indicates an issue with the Throttle/Pedal Position Sensor/Switch 'D' Circuit being low. This sensor is crucial for the proper functioning of the vehicle's electronic throttle control system. The throttle position sensor (TPS) is responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM). The ECM uses this data to determine the appropriate fuel delivery and ignition timing for optimal engine performance.

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

Common Causes of P2122 2012 Ford Fusion

  1. Faulty Throttle/Pedal Position Sensor/Switch 'D'.
  2. Wiring issues or poor electrical connections in the sensor circuit.
  3. Corrosion or damage to sensor connectors.
  4. ECM software or programming issues.
  5. Mechanical issues with the throttle body or pedal assembly.

Symptoms of P2122 2012 Ford Fusion

  1. Hesitation or lack of response when pressing the accelerator pedal.
  2. Rough idling or irregular engine speed.
  3. Reduced engine power or acceleration.
  4. Illumination of the Check Engine Light on the dashboard.
  5. Vehicle going into limp mode to prevent further damage.

How to Fix P2122 2012 Ford Fusion

  1. Begin by conducting a thorough inspection of the throttle position sensor and its wiring harness for any visible damage or corrosion.
  2. Use a multimeter to test the voltage output of the sensor and compare it to the manufacturer's specifications.
  3. If the sensor is faulty, replace it with a new one following the manufacturer's guidelines.
  4. Check and repair any damaged wiring or connectors in the sensor circuit.
  5. Clear the diagnostic trouble codes from the ECM and perform a test drive to ensure the issue has been resolved.

Cost to Fix P2122 2012 Ford Fusion

The cost of repairing a Throttle/Pedal Position Sensor/Switch 'D' Circuit Low issue on a 2012 Ford Fusion can vary depending on the extent of the damage and the cost of parts and labor in your area. Typically, the cost of a new throttle position sensor can range from $50 to $150, while the labor cost for diagnosis and repair can be between $100 and $300. Overall, you can expect to pay between $150 and $450 for this repair. It's recommended to contact local auto repair shops for accurate pricing based on your specific circumstances. Keep in mind that rates may vary based on location, vehicle make and model, and other factors.

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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.

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