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P2123 2006 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D' Circuit High

Quick Answer

The P2123 diagnostic trouble code (DTC) for a 2006 Ford Fusion indicates a problem with the Throttle/Pedal Position Sensor/Switch 'D' Circuit being too high. Common causes include Faulty throttle position sensor, Damaged or corroded wiring or connectors, Issues with the ECM. 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
P2123 2006 Ford Fusion indicates Throttle/Pedal Position Sensor/Switch 'D' Circuit High.
Common causes
Common causes include Faulty throttle position sensor, Damaged or corroded wiring or connectors, Issues with the ECM.
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 16, 2024
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Code P2123 2006 Ford Fusion Description

The P2123 diagnostic trouble code (DTC) for a 2006 Ford Fusion indicates a problem with the Throttle/Pedal Position Sensor/Switch 'D' Circuit being too high. 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 amount of air and fuel to deliver to the engine for optimal performance.

OBDII Code P2123 2006 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'D' Circuit High
P2123 2006 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D' Circuit High

Common Causes of P2123 2006 Ford Fusion

  1. Faulty throttle position sensor
  2. Damaged or corroded wiring or connectors
  3. Issues with the ECM
  4. Poor electrical connection
  5. Environmental factors such as moisture or debris affecting sensor performance

Symptoms of P2123 2006 Ford Fusion

  1. Rough idling
  2. Stalling
  3. Hesitation or lack of response when pressing the accelerator
  4. Reduced engine power
  5. Check engine light illuminated

How to Fix P2123 2006 Ford Fusion

  1. Begin by conducting a thorough inspection of the throttle position sensor, wiring, and connectors to check for any visible damage or corrosion.
  2. Test the throttle position sensor using a multimeter to ensure it is functioning within the manufacturer's specified range.
  3. If the sensor is faulty, replace it with a new one and ensure it is properly calibrated.
  4. Check and repair any damaged wiring or connectors as needed.
  5. Clear the diagnostic trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2123 2006 Ford Fusion

The cost of repairing a Throttle/Pedal Position Sensor/Switch 'D' Circuit High issue on a 2006 Ford Fusion can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay between $150 to $300 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to get a quote from a few different shops to ensure you're getting a fair price.

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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 P2123 2006 Ford Fusion Code

1. What are common symptoms of OBDII code P2123 on a 2006 Ford Fusion?

- Common symptoms include reduced engine power, acceleration issues, and the vehicle going into limp mode.

2. What are the potential causes of OBDII code P2123 on a 2006 Ford Fusion?

- The potential causes could be a faulty throttle position sensor, damaged wiring or connectors, or issues with the throttle pedal position sensor.

3. How can I diagnose the Throttle/Pedal Position Sensor/Switch 'D' Circuit High code on my 2006 Ford Fusion?

- You can diagnose the code by using an OBDII scanner to read the code, inspecting the throttle position sensor and pedal position sensor, and checking for any damaged wiring or connectors.

4. Can I continue driving my 2006 Ford Fusion with OBDII code P2123?

- It is not recommended to continue driving with this code as it can lead to further damage and potential safety hazards. It's best to have the issue diagnosed and repaired promptly.

5. How can I repair OBDII code P2123 on my 2006 Ford Fusion?

- Repairing the code may involve replacing the throttle position sensor, repairing or replacing damaged wiring or connectors, or addressing any issues with the throttle pedal position sensor.

6. Will resetting the OBDII code P2123 on my 2006 Ford Fusion make it go away permanently?

- Simply resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to reappear.

7. Are there any DIY tips for troubleshooting OBDII code P2123 on a 2006 Ford Fusion?

- DIY tips include checking for loose or damaged wiring, ensuring proper connections to the throttle position and pedal position sensors, and cleaning any corrosion on connectors.

8. Can a faulty throttle position sensor cause OBDII code P2123 on a 2006 Ford Fusion?

- Yes, a faulty throttle position sensor is a common cause of this code as it can lead to incorrect voltage signals being sent to the vehicle's computer.

9. How much does it typically cost to repair OBDII code P2123 on a 2006 Ford Fusion?

- The cost of repair can vary depending on the exact cause of the code, but it may range from $100 to $300 for parts and labor.

10. Is it possible for OBDII code P2123 on a 2006 Ford Fusion to trigger other related codes?

- Yes, it is possible for this code to trigger other related codes such as P2122 (Throttle/Pedal Position Sensor/Switch 'D' Circuit Low) or P2121 (Throttle/Pedal Position Sensor/Switch 'D' Circuit Range/Performance).

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