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Engine-Codes – Ford – P0122 2009 Ford Fusion

P0122 2009 Ford Fusion Code - Throttle/Pedal Position Sensor 'A' Circuit Low Input

Quick Answer

The P0122 diagnostic trouble code (DTC) for a 2009 Ford Fusion indicates a problem with the Throttle/Pedal Position Sensor 'A' Circuit, specifically reporting a low input signal. Common causes include Worn or damaged throttle position sensor, Loose or corroded electrical connections related to the sensor, Faulty wiring or harness leading to the sensor. 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
P0122 2009 Ford Fusion indicates Throttle/Pedal Position Sensor 'A' Circuit Low Input.
Common causes
Common causes include Worn or damaged throttle position sensor, Loose or corroded electrical connections related to the sensor, Faulty wiring or harness leading to the sensor.
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 12, 2024
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Code P0122 2009 Ford Fusion Description

The P0122 diagnostic trouble code (DTC) for a 2009 Ford Fusion indicates a problem with the Throttle/Pedal Position Sensor 'A' Circuit, specifically reporting a low input signal. This sensor is crucial for the proper functioning of the vehicle's electronic throttle control system, as it helps regulate the amount of air entering the engine and determines the appropriate fuel delivery for optimal performance. When the sensor detects a low input signal, it can lead to a range of issues affecting the vehicle's drivability and overall performance.

OBDII Code P0122 2009 Ford Fusion - Throttle/Pedal Position Sensor 'A' Circuit Low Input
P0122 2009 Ford Fusion Code - Throttle/Pedal Position Sensor 'A' Circuit Low Input

Common Causes of P0122 2009 Ford Fusion

  1. Worn or damaged throttle position sensor.
  2. Loose or corroded electrical connections related to the sensor.
  3. Faulty wiring or harness leading to the sensor.
  4. Issues with the ECM or related control modules.
  5. Environmental factors such as moisture or debris affecting sensor performance.

Symptoms of P0122 2009 Ford Fusion

  1. Reduced engine power or lack of response when pressing the accelerator pedal.
  2. Intermittent stalling or hesitation during acceleration.
  3. Illumination of the Check Engine Light on the dashboard.
  4. Rough idling or surging while driving at a constant speed.
  5. Difficulty shifting gears in an automatic transmission vehicle.

How to Fix P0122 2009 Ford Fusion

  1. Begin by diagnosing the exact cause of the low input signal, using a scan tool to retrieve freeze frame data and live sensor readings.
  2. Inspect the throttle position sensor and its wiring for any visible damage or corrosion, and clean any dirt or debris that may be affecting the connection.
  3. Test the sensor's voltage output using a multimeter to verify its functionality and compare it to manufacturer specifications.
  4. If the sensor is found to be faulty, replace it with a new OEM part and recalibrate it according to the manufacturer's instructions.
  5. Clear the DTC codes and perform a test drive to ensure that the issue has been resolved and that the sensor is operating correctly.

Cost to Fix P0122 2009 Ford Fusion

The typical repair costs for addressing a P0122 code on a 2009 Ford Fusion can vary depending on the specific cause of the issue and the labor rates in your area. In general, replacing a throttle position sensor can cost between $100 to $200 for the part alone, with additional labor costs ranging from $100 to $200. Overall, you can expect to pay anywhere from $200 to $400 for the repair at a reputable auto repair shop. Keep in mind that the actual costs may differ based on your location, the availability of parts, and the expertise of the technician performing the repair. It's recommended to obtain a detailed quote from a local mechanic or dealership to get a more accurate estimate.

What does this mean?

Tech Notes for P0122 2009 Ford Fusion

You can try to clean the throttle body, before any other repairs.

When is the Code Detected?

The Throttle Position Sensor (TPS) signal 1 circuit has reported an open or low voltage

Need more information about the P0122 2009 Ford Fusion code?

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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 P0122 2009 Ford Fusion Code

1. What are the common symptoms of OBDII code P0122 on a 2009 Ford Fusion?

The common symptoms of code P0122 include reduced engine power, poor acceleration, stalling, rough idling, and the vehicle going into "limp mode."

2. What does the OBDII code P0122 indicate on a 2009 Ford Fusion?

OBDII code P0122 on a 2009 Ford Fusion indicates a low input signal from the throttle/pedal position sensor 'A' circuit.

3. What are the possible causes of OBDII code P0122 on a 2009 Ford Fusion?

Possible causes of code P0122 include a faulty throttle position sensor, damaged wiring or connectors in the sensor circuit, a corroded sensor ground, or a problem with the engine control module.

4. How can I diagnose the OBDII code P0122 on my 2009 Ford Fusion?

To diagnose code P0122, you can visually inspect the throttle position sensor and its wiring, test the sensor's voltage output, check for continuity in the sensor circuit, and scan the vehicle's computer for related error codes.

5. Can I drive my 2009 Ford Fusion with OBDII code P0122?

It is not recommended to drive your Ford Fusion with code P0122 as it can lead to unsafe driving conditions due to reduced engine power and potential stalling.

6. How can I repair OBDII code P0122 on my 2009 Ford Fusion?

To repair code P0122, you may need to replace the throttle position sensor, repair or replace damaged wiring or connectors, clean or replace corroded sensor grounds, or reprogram the engine control module.

7. Is it safe to reset the OBDII code P0122 on my 2009 Ford Fusion using a diagnostic scanner?

Resetting the code using a diagnostic scanner may temporarily clear the error code, but if the underlying issue causing code P0122 is not addressed, the code is likely to reappear.

8. Can a dirty throttle body cause OBDII code P0122 on a 2009 Ford Fusion?

While a dirty throttle body can affect the performance of the throttle system, it is not a common cause of OBDII code P0122. It is recommended to address the specific issues related to the throttle position sensor and its circuit.

9. How much does it cost to fix OBDII code P0122 on a 2009 Ford Fusion?

The cost of fixing code P0122 can vary depending on the root cause of the issue. Replacing the throttle position sensor can cost between $100 to $200, while addressing wiring or module issues may require additional labor costs.

10. Can a DIY enthusiast fix OBDII code P0122 on a 2009 Ford Fusion?

If you have the necessary tools, knowledge, and experience working on automotive systems, you may be able to diagnose and repair code P0122 yourself. However, it is recommended to consult a professional if you are unsure about the repair process.

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