AutoCodes – Hyundai – P1120 Hyundai

P1120 Hyundai Code - Throttle Position Sensor 1 Circuit

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 Hyundai indicates Throttle Position Sensor 1 Circuit.
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 32,098

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
Cost to Diagnose
FAQs
Comments
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Code P1120 Hyundai Description

The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM). In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the ECM.

OBDII Code P1120 Hyundai - Throttle Position Sensor 1 Circuit - AutoCodes.com — P1120 Hyundai Code - Throttle Position Sensor 1 Circuit

What does this mean?

What are the Possible Causes of the DTC P1120 Hyundai?

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 Hyundai?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1120 Hyundai 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 P1120 Hyundai 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 P1120 Hyundai Code

1. What are common symptoms of OBDII code P1120 in a Hyundai related to the Throttle Position Sensor 1 Circuit?

- Common symptoms include poor acceleration, engine misfires, stalling, and rough idling.

2. What are the possible causes of OBDII code P1120 in a Hyundai?

- The code P1120 can be triggered by a faulty throttle position sensor, wiring issues, or a problem with the throttle body.

3. How can I diagnose the Throttle Position Sensor 1 Circuit issue causing OBDII code P1120 in my Hyundai?

- You can use a diagnostic scanner to read the code, check the throttle position sensor's voltage, and inspect the wiring for any signs of damage.

4. Is it safe to drive my Hyundai with OBDII code P1120 related to the Throttle Position Sensor 1 Circuit?

- It is not recommended to drive your vehicle with this code as it can lead to poor performance and potential safety hazards.

5. Can I repair the Throttle Position Sensor 1 Circuit problem causing OBDII code P1120 in my Hyundai on my own?

- If you have experience with automotive repairs and the necessary tools, you may be able to replace the throttle position sensor or repair the wiring yourself.

6. How much does it typically cost to repair OBDII code P1120 in a Hyundai related to the Throttle Position Sensor 1 Circuit?

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

7. Are there any preventive measures to avoid OBDII code P1120 related to the Throttle Position Sensor 1 Circuit in my Hyundai?

- Regular maintenance, such as cleaning the throttle body and checking the sensor's connections, can help prevent this issue.

8. Can a dirty throttle body cause OBDII code P1120 in a Hyundai?

- Yes, a dirty or clogged throttle body can affect the sensor's readings and potentially trigger the code P1120.

9. Will resetting the OBDII code P1120 related to the Throttle Position Sensor 1 Circuit in my Hyundai make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear.

10. How long does it take to repair OBDII code P1120 in a Hyundai caused by the Throttle Position Sensor 1 Circuit issue?

- The repair time can vary depending on the exact cause and the mechanic's experience, but it may take anywhere from 1 to 3 hours to complete the repair.