AutoCodes – Ford – P1120 2000 Ford F150

P1120 2000 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 2000 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 6,352

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 2000 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 2000 Ford F150 - Throttle Position Sensor Out of Range - AutoCodes.com — P1120 2000 Ford F150 Code - Throttle Position Sensor Out of Range

What does this mean?

What are the Possible Causes of the DTC P1120 2000 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 2000 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 2000 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 2000 Ford F150 Code

What does the OBDII code P1120 mean for a 2000 Ford F150?

P1120 indicates that the Throttle Position Sensor (TPS) is reporting a voltage reading that is out of the expected range, which can affect the engine's performance.

What are the common symptoms of code P1120 on a 2000 Ford F150?

Symptoms may include poor acceleration, hesitation, rough idling, stalling, or the check engine light being illuminated.

What causes the P1120 code on a 2000 Ford F150?

Common causes include a faulty TPS, damaged or corroded electrical connections, wiring issues, or a failed PCM (Powertrain Control Module) in rare cases.

How does the Throttle Position Sensor (TPS) work?

The TPS monitors the position of the throttle plate and sends voltage signals to the PCM to help control fuel delivery and engine performance.

Can I drive my 2000 Ford F150 with the P1120 code?

Driving with this code is not recommended, as it can lead to poor performance, stalling, or unsafe driving conditions.

How do I diagnose the P1120 code on my 2000 Ford F150?

Start by checking the TPS and its wiring for damage or corrosion, then use a multimeter to test the sensor's voltage output.

How do I fix the P1120 code on a 2000 Ford F150?

Repairs may include replacing the TPS, repairing damaged wiring or connectors, and clearing the code with an OBDII scanner.

How much does it cost to fix a P1120 code on a 2000 Ford F150?

Replacing the TPS typically costs between $100 and $200, including parts and labor, but the price may vary depending on location and repair shop.

Can a dirty throttle body cause a P1120 code?

A dirty throttle body is unlikely to directly cause this code but may contribute to poor throttle response, so cleaning it can still be beneficial.

Will resetting the check engine light fix the P1120 code permanently?

No, resetting the light will only temporarily clear the code. The underlying issue with the TPS or related components must be addressed to resolve it.