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P1120 Lincoln Code - Throttle Position Sensor Out of Range

Quick Answer

The P1120 diagnostic trouble code indicates that the Throttle Position Sensor (TPS) is out of range. Common causes include Worn TPS: The TPS may have worn out over time, leading to inaccurate readings, Electrical issues: Wiring or connector problems between the TPS and ECM can cause signal disruptions, Throttle body issues: A dirty or malfunctioning throttle body can affect TPS readings. 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 Lincoln indicates Throttle Position Sensor Out of Range.
Common causes
Common causes include Worn TPS: The TPS may have worn out over time, leading to inaccurate readings, Electrical issues: Wiring or connector problems between the TPS and ECM can cause signal disruptions, Throttle body issues: A dirty or malfunctioning throttle body can affect TPS readings.
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 06, 2024
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Code P1120 Lincoln Description

The P1120 diagnostic trouble code indicates that the Throttle Position Sensor (TPS) is out of range. The TPS is a crucial component of the vehicle's electronic control system, as it monitors the position of the throttle valve and sends signals to the Engine Control Module (ECM) to adjust fuel delivery and ignition timing. When the TPS is out of range, it means that the sensor is not providing accurate or consistent data to the ECM, which can lead to erratic engine performance and drivability issues.

OBDII Code P1120 Lincoln - Throttle Position Sensor Out of Range
P1120 Lincoln Code - Throttle Position Sensor Out of Range

Common Causes of P1120 Lincoln

  1. Worn TPS: The TPS may have worn out over time, leading to inaccurate readings.
  2. Electrical issues: Wiring or connector problems between the TPS and ECM can cause signal disruptions.
  3. Throttle body issues: A dirty or malfunctioning throttle body can affect TPS readings.
  4. ECM malfunction: A faulty ECM can misinterpret TPS signals, triggering the code.
  5. Environmental factors: Extreme temperatures or moisture exposure can damage the TPS.

Symptoms of P1120 Lincoln

  1. Poor acceleration: The vehicle may hesitate or struggle to accelerate smoothly.
  2. Rough idling: The engine may idle erratically or stall frequently.
  3. Reduced fuel efficiency: The vehicle may experience decreased fuel efficiency due to improper fuel delivery.
  4. Check Engine Light: The Check Engine Light may illuminate on the dashboard.
  5. Transmission shifting issues: The transmission may shift harshly or unpredictably.

How to Fix P1120 Lincoln

  1. Diagnose the issue: Use a scan tool to confirm the P1120 code and check TPS voltage readings.
  2. Replace the TPS: Remove the old TPS from the throttle body and install a new one.
  3. Inspect wiring and connectors: Check for any damaged wires or loose connections and repair as necessary.
  4. Clean the throttle body: Remove any carbon buildup or debris from the throttle body to ensure proper TPS function.
  5. Reset the ECM: Clear the fault code and reset the ECM to relearn TPS values.

Cost to Fix P1120 Lincoln

The cost of repairing a Throttle Position Sensor out of range issue can vary depending on the make and model of the vehicle, as well as the labor rates in your area. On average, replacing a TPS can cost between $100 and $300 for parts and labor. Additional diagnostic fees may apply, and rates can differ at dealerships, independent shops, or in metropolitan areas. It's recommended to obtain quotes from local auto repair shops for a precise estimate.

When is the Code Detected?

Malfunction is detected when voltage from the sensor is sent to Engine Control Module (ECM) is out of range.

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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 Lincoln Code

1. What are the common symptoms of OBDII code P1120 in a Lincoln related to the Throttle Position Sensor Out of Range?

- Common symptoms include rough idling, poor acceleration, stalling, and potential difficulty shifting gears.

2. What are the possible causes of the OBDII code P1120 in a Lincoln indicating Throttle Position Sensor Out of Range?

- The code P1120 can be triggered by a faulty throttle position sensor, wiring issues, or a problem with the vehicle's electronic control module.

3. How can I diagnose the Throttle Position Sensor issue causing the OBDII code P1120 on my Lincoln?

- To diagnose the issue, you can use a diagnostic scan tool to read the trouble code, test the throttle position sensor's voltage output, and inspect the sensor and its wiring for any visible damage.

4. Can a dirty throttle body cause the OBDII code P1120 in a Lincoln?

- Yes, a dirty or carbon-fouled throttle body can cause erratic readings from the throttle position sensor, leading to the trigger of code P1120.

5. What are some repair tips for addressing the Throttle Position Sensor Out of Range issue in a Lincoln?

- Repair tips include cleaning the throttle body, inspecting and repairing any damaged wiring, replacing the throttle position sensor if necessary, and performing a throttle relearn procedure.

6. Is it safe to continue driving my Lincoln with the OBDII code P1120 related to the Throttle Position Sensor Out of Range?

- It is not recommended to drive the vehicle with this issue as it can lead to poor engine performance, reduced fuel efficiency, and potential safety risks. It's best to address the problem promptly.

7. Can resetting the OBDII code P1120 in a Lincoln fix the Throttle Position Sensor Out of Range issue?

- While clearing the code may temporarily turn off the check engine light, it will not fix the underlying problem causing the code. Proper diagnosis and repair are necessary.

8. How much does it typically cost to repair the Throttle Position Sensor issue causing the OBDII code P1120 in a Lincoln?

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

9. Can a DIY enthusiast replace the throttle position sensor in a Lincoln to address the OBDII code P1120?

- Yes, replacing the throttle position sensor can be a DIY project for those with some mechanical experience and the right tools. However, proper diagnosis is crucial to ensure the sensor is the actual issue.

10. Will driving with the OBDII code P1120 in a Lincoln damage the engine or other components?

- Continued driving with the Throttle Position Sensor Out of Range issue can potentially cause further damage to the engine and other components, leading to more costly repairs in the future.

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