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P2122 2010 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D' Circuit Low

Quick Answer

The P2122 diagnostic trouble code for a 2010 Ford Fusion indicates an issue with the Throttle/Pedal Position Sensor/Switch 'D' Circuit being low. Common causes include Faulty throttle position sensor, Wiring issues or shorts in the sensor circuit, Corrosion or poor connections in the sensor wiring. 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 throttle position sensor, Wiring issues or shorts in the sensor circuit, Corrosion or poor connections in the sensor wiring.
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 2010 Ford Fusion Description

The P2122 diagnostic trouble code for a 2010 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 adjust the air-fuel mixture and control the engine's performance.

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

Common Causes of P2122 2010 Ford Fusion

  1. Faulty throttle position sensor
  2. Wiring issues or shorts in the sensor circuit
  3. Corrosion or poor connections in the sensor wiring
  4. ECM software or hardware issues
  5. Mechanical problems with the throttle body

Symptoms of P2122 2010 Ford Fusion

  1. Rough idling or stalling
  2. Reduced engine power
  3. Poor acceleration
  4. Check Engine Light illuminated
  5. Limp mode activation

How to Fix P2122 2010 Ford Fusion

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the trouble codes and confirm P2122.
  2. Inspect the throttle position sensor and its wiring for any visible damage, corrosion, or loose connections.
  3. Test the sensor's voltage output using a multimeter to ensure it is within the manufacturer's specified range.
  4. If the sensor is faulty, replace it with a new one following the manufacturer's guidelines.
  5. Clear the trouble codes from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2122 2010 Ford Fusion

The cost of repairing a P2122 code on a 2010 Ford Fusion can vary depending on the specific cause of the issue. In general, the price range for parts such as a throttle position sensor can be between $50 and $150. Labor costs at an auto repair shop typically range from $80 to $150 per hour. Overall, the total repair cost for this issue could range from $150 to $400, including parts and labor. It is recommended to consult with a professional mechanic for a more accurate estimate based on your vehicle's specific needs and location.

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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.

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