AutoCodes – Ford – P0123 2009 Ford Fusion

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

Quick Answer

The throttle position (TP) sensor circuit is monitored by the Powertrain Control Module (PCM) for a high TP rotation angle (or voltage) input through the comprehensive component monitor (CCM). Common causes include Dirty throttle plate, Faulty throttle position sensor, Throttle position sensor harness is open or shorted. 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 Dirty throttle plate, Faulty throttle position sensor, Throttle position sensor harness is open or shorted.
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.

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Code Popularity 2,447

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0123 2009 Ford Fusion Description

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

What does this mean?

What are the Possible Causes of the DTC P0123 2009 Ford Fusion?

Dirty throttle plate
Faulty throttle position sensor
Throttle position sensor harness is open or shorted
Throttle position sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0123 2009 Ford Fusion?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0123 2009 Ford Fusion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0123 2009 Ford Fusion code?

Need more information on how to fix the P0123 2009 Ford Fusion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0123 2009 Ford Fusion code diagnosed by a professional: Find a repair shop in your area

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.