AutoCodes – Ford – P1120 2001 Ford F150

P1120 2001 Ford F150 Code - Throttle Position Sensor Out of Range

Quick Answer

The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor circuit poor electrical connection. 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: P1120 2001 Ford F150 indicates Throttle Position Sensor Out of Range.
Common causes: Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor circuit poor electrical connection.
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 7,169

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 Apr 25, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1120 2001 Ford F150 Description

The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. The TPS is a rotary potentiometer sensor that provides a signal to the Powertrain Control Module (PCM) that is linearly proportional to the throttle plate/shaft position. As the TPS is rotated by the throttle shaft, the following operating conditions are determined by the PCM:
• Closed throttle (includes idle or deceleration)
• Part throttle (includes cruise or moderate acceleration)
• Wide open throttle (includes maximum acceleration or de-choke on crank)
• Throttle angle rate

OBDII Code P1120 2001 Ford F150 - Throttle Position Sensor Out of Range - AutoCodes.com — P1120 2001 Ford F150 Code - Throttle Position Sensor Out of Range

What does this mean?

What are the Possible Causes of the DTC P1120 2001 Ford F150?

Faulty throttle position sensor
Throttle position sensor harness is open or shorted
Throttle position sensor circuit poor electrical connection
Throttle position sensor not properly adjusted

How to Fix the DTC P1120 2001 Ford F150?

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

The TP sensor circuit is monitored by the PCM for a low TP rotation angle (or voltage) input below the closed throttle position through the comprehensive component monitor (CCM). If during key ON engine OFF or key ON engine running the TP rotation angle (or voltage) remains within the calibrated self-test range but falls between 3.42 and 9.85% (0.17 and 0.49 volt), the test fails.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1120 2001 Ford F150 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.

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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 P1120 2001 Ford F150 Code

1. What does OBDII code P1120 in a 2001 Ford F150 mean?

The code P1120 indicates that the throttle position sensor is out of range in a 2001 Ford F150.

2. What are the common symptoms of a faulty throttle position sensor in a 2001 Ford F150?

Common symptoms include poor acceleration, rough idling, stalling, and difficulty maintaining a consistent speed.

3. What are the possible causes of the throttle position sensor being out of range in a 2001 Ford F150?

Potential causes include a faulty throttle position sensor, damaged wiring or connectors, or issues with the throttle body itself.

4. How can I diagnose the throttle position sensor issue in my 2001 Ford F150?

You can use an OBDII scanner to retrieve the specific trouble code (P1120), visually inspect the wiring and connectors, and perform a voltage test on the throttle position sensor.

5. What are the repair options for fixing a throttle position sensor out of range in a 2001 Ford F150?

Repair options may include replacing the throttle position sensor, repairing damaged wiring or connectors, or cleaning and calibrating the throttle body.

6. Can I drive my 2001 Ford F150 with the throttle position sensor out of range?

It is not recommended to drive your vehicle with a faulty throttle position sensor, as it can lead to performance issues and potential safety hazards.

7. How much does it typically cost to repair a throttle position sensor issue in a 2001 Ford F150?

The cost of repairs can vary depending on the specific issue, but replacing a throttle position sensor can range from $100 to $300 including parts and labor.

8. How often does the throttle position sensor need to be replaced in a 2001 Ford F150?

The throttle position sensor typically does not need frequent replacement, but it can fail over time due to wear and tear or other electrical issues.

9. Will resetting the OBDII code P1120 in my 2001 Ford F150 temporarily fix the issue?

Resetting the code may temporarily clear the warning light, but the underlying problem with the throttle position sensor will still need to be addressed to prevent further issues.

10. Can a DIY enthusiast replace the throttle position sensor in a 2001 Ford F150?

Replacing the throttle position sensor can be a DIY project for those with mechanical skills and the necessary tools. However, it's recommended to consult a professional if unsure.