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Engine-Codes – Ford – P0122 2008 Ford Fusion

P0122 2008 Ford Fusion Code - Throttle/Pedal Position Sensor 'A' Circuit Low Input

Quick Answer

The P0122 code for a 2008 Ford Fusion indicates a problem with the Throttle/Pedal Position Sensor 'A' Circuit, specifically a low input signal being detected. Common causes include Faulty Throttle/Pedal Position Sensor, Damaged or corroded wiring/connectors, ECM malfunction. 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 2008 Ford Fusion indicates Throttle/Pedal Position Sensor 'A' Circuit Low Input.
Common causes
Common causes include Faulty Throttle/Pedal Position Sensor, Damaged or corroded wiring/connectors, ECM malfunction.
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 10, 2024
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Code P0122 2008 Ford Fusion Description

The P0122 code for a 2008 Ford Fusion indicates a problem with the Throttle/Pedal Position Sensor 'A' Circuit, specifically a low input signal being detected. This sensor is crucial for the proper functioning of the vehicle's throttle and engine management system. The Throttle/Pedal Position Sensor 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 injection and ignition timing for optimal engine performance.

OBDII Code P0122 2008 Ford Fusion - Throttle/Pedal Position Sensor 'A' Circuit Low Input
P0122 2008 Ford Fusion Code - Throttle/Pedal Position Sensor 'A' Circuit Low Input

Common Causes of P0122 2008 Ford Fusion

  1. Faulty Throttle/Pedal Position Sensor
  2. Damaged or corroded wiring/connectors
  3. ECM malfunction
  4. Loose or disconnected sensor connections
  5. Environmental factors such as moisture or debris affecting sensor performance

Symptoms of P0122 2008 Ford Fusion

  1. Reduced power and acceleration
  2. Hesitation or surging during acceleration
  3. Poor fuel efficiency
  4. Check Engine Light illuminated on the dashboard

How to Fix P0122 2008 Ford Fusion

  1. Begin by inspecting the wiring and connectors associated with the Throttle/Pedal Position Sensor. Look for any signs of damage, corrosion, or loose connections. Repair or replace any damaged components as needed.
  2. Test the Throttle/Pedal Position Sensor using a multimeter to check for proper voltage output. Replace the sensor if it fails this test.
  3. Clear the diagnostic trouble codes from the ECM using a scan tool and monitor the sensor's performance to ensure the issue has been resolved.
  4. If the problem persists, consider checking the ECM for any faults or malfunctions. Consult with a professional technician or dealership for further diagnostics and repairs if necessary.

Cost to Fix P0122 2008 Ford Fusion

The typical repair costs for addressing a P0122 code on a 2008 Ford Fusion can vary depending on the specific cause of the issue. Generally, the cost of replacing a Throttle/Pedal Position Sensor can range from $100 to $200, with additional costs for labor if performed by a professional mechanic. Wiring repairs or ECM diagnostics may incur additional expenses. It is advisable to consult with a local auto repair shop for a more accurate cost estimate based on your vehicle's make and model, as well as labor rates in your area.

What does this mean?

Tech Notes for P0122 2008 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 2008 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 2008 Ford Fusion Code

1. What are the common symptoms of OBDII code P0122 in a 2008 Ford Fusion?

- Common symptoms include poor acceleration, rough idling, stalling, and potential issues with the vehicle's transmission shifting.

2. What does the OBDII code P0122 'Throttle/Pedal Position Sensor 'A' Circuit Low Input' mean for a 2008 Ford Fusion?

- This code indicates that the throttle/pedal position sensor 'A' is sending a signal to the vehicle's engine control module that is lower than expected.

3. What are the possible causes of OBDII code P0122 in a 2008 Ford Fusion?

- Potential causes include a faulty throttle position sensor, damaged wiring or connectors in the sensor circuit, or issues with the vehicle's engine control module.

4. How can I diagnose the cause of OBDII code P0122 in my 2008 Ford Fusion?

- Diagnosis typically involves checking the throttle position sensor's voltage readings, inspecting wiring and connectors for damage, and testing the sensor's operation using a multimeter.

5. Can I drive my 2008 Ford Fusion with OBDII code P0122?

- It is not recommended to drive the vehicle with this code present, as it can lead to poor performance and potential safety hazards. It's best to address the issue promptly.

6. How can I repair OBDII code P0122 in my 2008 Ford Fusion?

- Repair options may include replacing the throttle position sensor, repairing damaged wiring or connectors in the sensor circuit, or reprogramming the engine control module if needed.

7. Is it safe to reset the OBDII code P0122 in my 2008 Ford Fusion using a code reader?

- While resetting the code may temporarily clear the warning light, it will not fix the underlying issue causing the code. It's important to diagnose and address the root cause of the problem.

8. How much does it typically cost to repair OBDII code P0122 in a 2008 Ford Fusion?

- The cost of repairs can vary depending on the specific cause of the code. Replacement of the throttle position sensor can range from $100 to $300, while wiring repairs may be more affordable.

9. Can a DIY enthusiast fix OBDII code P0122 in a 2008 Ford Fusion?

- Depending on the individual's mechanical skills and access to tools, DIY repair of this code is possible. However, proper diagnosis and repair procedures should be followed to ensure a successful fix.

10. How long does it take to repair OBDII code P0122 in a 2008 Ford Fusion?

- The repair time can vary based on the cause of the code and the skill level of the person performing the repair. In general, it may take a few hours to a full day to diagnose and fix the issue.

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