AutoCodesNissan – P0120 Nissan

P0120 Nissan Code - Throttle Position Sensor Signal Range/Performance

Quick Answer

The throttle position sensor (TPS) responds to the accelerator pedal movement. Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor 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
P0120 Nissan indicates Throttle Position Sensor Signal Range/Performance.
Common causes
Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor 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 93,593
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Dec 01, 2022
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Code P0120 Nissan 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.
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.
OBDII Code P0120 Nissan - Throttle Position Sensor Signal Range/Performance - AutoCodes.com
P0120 Nissan Code - Throttle Position Sensor Signal Range/Performance

What are the Possible Causes of the DTC P0120 Nissan?

  • Faulty Throttle Position Sensor
  • Throttle Position Sensor circuit is open or shorted
  • Throttle Position Sensor poor electrical connection

How to Fix the DTC P0120 Nissan?

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 P0120 Nissan 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 P0120 Nissan Code

No Frequently Asked Questions about P0120 Nissan Code found.

Discuss the causes and fixes for P0120 Nissan OBDII Code

  • i have replaced the tps sensor and still throwing code enginge dies on open throttle like its not gettn fuel

  • What model and year is your Nissan?

  • 98 200sx ser sr20 motor

  • Hi

  • Hello, my car is nissan sentra 2006, the problem is that when the car is runnig suddenly the RPM go down to 800 and if you step on the gas goes to 1200 RPM max, the car can not advance so I have to switch off wait few minutes and the star switch on, some times i have to do this procedure 2 or 3 times until the car run normal. The problem is with the TPS sensor? Also, there is a code P1614 but that is a mal fuction of the NATs. What is the best option to fix my car?? Thanks.

  • I have search everywhere, but there is no information for the P0120 code on your 2006 Nissan Sentra. Please double check the code. From what you explain, sound like you may have a problem with the throttle body. You could start by cleaning the throttle, but if the problem persist, then you may have to replace the throttle body.

  • replaced the tps its running good but just tru p0120 code it on a 2000 xterra not sure what to do because if we move it it will not idle right

  • Usually replacing the TPS takes care of the problem, I have not seen anything else triggering the P0120 code. What is the engine size of your Xterra? how did you adjust the new TPS sensor?

  • Kept moving it to kind the sweet spot its 3.3 v6

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