AutoCodes – Ford – P0121 2007 Ford Fusion

P0121 2007 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'A' Circuit Range/Performance

Quick Answer

The throttle position (TP) sensor circuit is monitored by the Powertrain Control Module (PCM) for a non-closed throttle position at idle. 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
P0121 2007 Ford Fusion indicates Throttle/Pedal Position Sensor/Switch 'A' Circuit Range/Performance.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 5,198
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0121 2007 Ford Fusion Description

The throttle position (TP) sensor circuit is monitored by the Powertrain Control Module (PCM) for a non-closed throttle position at idle. The test fails if the key on engine running (KOER) self-test terminates upon placing the transmission gear selector in DRIVE or REVERSE or the TP closed throttle position is not achieved when closing the throttle (idle) after opening it (in PARK or NEUTRAL).
OBDII Code P0121 2007 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'A' Circuit Range/Performance - AutoCodes.com
P0121 2007 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'A' Circuit Range/Performance

What are the Possible Causes of the DTC P0121 2007 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 P0121 2007 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0121 2007 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 P0121 2007 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 P0121 2007 Ford Fusion Code

1. What are the common symptoms of OBDII code P0121 on a 2007 Ford Fusion?

The common symptoms of OBDII code P0121 on a 2007 Ford Fusion include issues like reduced engine power, poor acceleration, stalling, and illuminated Check Engine Light.

2. What does OBDII code P0121 indicate in a 2007 Ford Fusion?

OBDII code P0121 in a 2007 Ford Fusion indicates a problem with the Throttle/Pedal Position Sensor/Switch 'A' Circuit Range/Performance.

3. What are the possible causes of OBDII code P0121 on a 2007 Ford Fusion?

Possible causes of OBDII code P0121 on a 2007 Ford Fusion include a faulty throttle position sensor, damaged wiring or connectors, a dirty throttle body, or a malfunctioning electronic throttle control system.

4. How can I diagnose the Throttle/Pedal Position Sensor/Switch 'A' Circuit issue in my 2007 Ford Fusion?

You can diagnose the Throttle/Pedal Position Sensor/Switch 'A' Circuit issue in your 2007 Ford Fusion by checking the sensor's wiring and connectors, inspecting the throttle body for dirt or debris, and using a scan tool to read the code and sensor data.

5. Can I drive my 2007 Ford Fusion with OBDII code P0121?

It is not recommended to drive your 2007 Ford Fusion with OBDII code P0121, as it can lead to performance issues and potential safety hazards. It is best to address the problem promptly.

6. How can I repair OBDII code P0121 on my 2007 Ford Fusion?

To repair OBDII code P0121 on your 2007 Ford Fusion, you may need to replace the throttle position sensor, repair any damaged wiring or connectors, clean the throttle body, or address any issues with the electronic throttle control system.

7. Will resetting the OBDII code P0121 on my 2007 Ford Fusion make the issue go away?

Resetting the OBDII code P0121 on your 2007 Ford Fusion may temporarily turn off the Check Engine Light, but it will not fix the underlying problem causing the code. It is essential to diagnose and repair the issue to prevent future occurrences.

8. Can a DIY enthusiast fix OBDII code P0121 on a 2007 Ford Fusion?

A DIY enthusiast with the necessary tools and knowledge about automotive repairs may be able to fix OBDII code P0121 on a 2007 Ford Fusion. However, if unsure, it is recommended to seek professional help to ensure the problem is addressed correctly.

9. How much does it cost to fix OBDII code P0121 on a 2007 Ford Fusion?

The cost to fix OBDII code P0121 on a 2007 Ford Fusion can vary depending on the exact cause of the issue and whether you choose to repair it yourself or take it to a mechanic. Costs may include parts and labor for sensor replacement, wiring repairs, or throttle body cleaning.

10. How can I prevent OBDII code P0121 from occurring again on my 2007 Ford Fusion?

To prevent OBDII code P0121 from occurring again on your 2007 Ford Fusion, it is essential to perform regular maintenance, keep the throttle body clean, address any issues promptly, and drive carefully to avoid harsh acceleration or deceleration.

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