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Engine-Codes – Ford – P0123 2009 Ford Fusion

P0123 2009 Ford Fusion Code - Throttle/Pedal Position Sensor 'A' Circuit High

Quick Answer

The P0123 diagnostic trouble code (DTC) for a 2009 Ford Fusion indicates an issue with the Throttle/Pedal Position Sensor 'A' Circuit High. Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning PCM. 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
P0123 2009 Ford Fusion indicates Throttle/Pedal Position Sensor 'A' Circuit High.
Common causes
Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning PCM.
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 P0123 2009 Ford Fusion Description

The P0123 diagnostic trouble code (DTC) for a 2009 Ford Fusion indicates an issue with the Throttle/Pedal Position Sensor 'A' Circuit High. This code is triggered when the Powertrain Control Module (PCM) detects a higher than expected voltage from the throttle position sensor or pedal position sensor. These sensors provide crucial input to the PCM to determine the amount of throttle opening and acceleration requested by the driver.

OBDII Code P0123 2009 Ford Fusion - Throttle/Pedal Position Sensor 'A' Circuit High
P0123 2009 Ford Fusion Code - Throttle/Pedal Position Sensor 'A' Circuit High

Common Causes of P0123 2009 Ford Fusion

  1. Faulty throttle position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Malfunctioning PCM
  4. Mechanical issue with the throttle body
  5. Corrosion or contamination in sensor connections

Symptoms of P0123 2009 Ford Fusion

  1. Engine hesitation or surging
  2. Reduced fuel efficiency
  3. Illuminated Check Engine Light
  4. Difficulty accelerating smoothly
  5. Stalling or rough idling

How to Fix P0123 2009 Ford Fusion

  1. Diagnose the issue using a scan tool to confirm the P0123 code and identify the specific cause.
  2. Inspect the throttle position sensor, wiring, and connectors for any signs of damage or corrosion.
  3. Replace the throttle position sensor if found to be faulty.
  4. Repair or replace any damaged wiring or connectors in the sensor circuit.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0123 2009 Ford Fusion

The typical repair costs for addressing a P0123 code on a 2009 Ford Fusion can range from $100 to $300, including parts and labor. However, it is essential to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops may charge less. It is recommended to obtain quotes from multiple reputable repair facilities to get a more accurate estimate for the repair.

What does this mean?

Tech Notes for P0123 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 a high voltage

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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 P0123 2009 Ford Fusion Code

1. What are the common symptoms of OBDII code P0123 on a 2009 Ford Fusion?

- Common symptoms include stalling or hesitation during acceleration, lack of power, the vehicle going into "limp mode," and illuminated Check Engine Light.

2. What does the OBDII code P0123 'Throttle/Pedal Position Sensor 'A' Circuit High' mean for a 2009 Ford Fusion?

- This code indicates that the Engine Control Module (ECM) has detected a high voltage signal from the throttle or pedal position sensor.

3. What are the possible causes of OBDII code P0123 on a 2009 Ford Fusion?

- Possible causes include a faulty throttle or pedal position sensor, wiring issues, a poor electrical connection, or a problem with the ECM itself.

4. How can I diagnose the cause of OBDII code P0123 on my 2009 Ford Fusion?

- To diagnose the issue, you can use a scan tool to check for other related trouble codes, visually inspect the sensor and wiring for any damage, and perform voltage tests on the sensor.

5. Can I still drive my 2009 Ford Fusion with OBDII code P0123 present?

- It is not recommended to continue driving with this code present, as it can lead to poor performance and potential safety issues. Have the vehicle inspected and repaired as soon as possible.

6. How can I repair OBDII code P0123 on my 2009 Ford Fusion?

- Repair options include replacing the throttle or pedal position sensor, repairing any damaged wiring or connections, or resetting the ECM after addressing the underlying issue.

7. Is it possible to reset the Check Engine Light after fixing OBDII code P0123 on a 2009 Ford Fusion?

- Yes, once the underlying issue has been resolved and the ECM has been reset, the Check Engine Light can be cleared using a scan tool or by disconnecting the vehicle's battery for a few minutes.

8. How much does it typically cost to repair OBDII code P0123 on a 2009 Ford Fusion?

- The cost of repairs can vary depending on the specific cause of the code and whether you choose to address the issue yourself or have it done by a professional. Costs may range from $100 to $300 or more.

9. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P0123 on a 2009 Ford Fusion?

- Yes, with the right tools and guidance, a DIY enthusiast can often address this code by replacing the sensor, checking and repairing wiring, and resetting the ECM.

10. How often does OBDII code P0123 occur in 2009 Ford Fusion vehicles?

- While the frequency can vary, OBDII code P0123 related to the throttle/pedal position sensor circuit high can occur sporadically in 2009 Ford Fusion vehicles due to sensor wear, wiring issues, or other factors.

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