AutoCodes – Nissan – P0122 2003 Nissan Sentra

P0122 2003 Nissan Sentra Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Quick Answer

The Throttle Pedal Position (TPP) 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
P0122 2003 Nissan Sentra indicates Throttle Position Sensor/Switch '1' Circuit Low Input.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 4,864
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0122 2003 Nissan Sentra Description

The Throttle Pedal Position (TPP) 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 P0122 2003 Nissan Sentra - Throttle Position Sensor/Switch '1' Circuit Low Input - AutoCodes.com
P0122 2003 Nissan Sentra Code - Throttle Position Sensor/Switch '1' Circuit Low Input

What are the Possible Causes of the DTC P0122 2003 Nissan Sentra?

  • Faulty throttle position sensor.
  • Throttle position sensor harness is open or shorted
  • Throttle position sensor circuit poor electrical connection
  • Faulty accelerator pedal position sensor

How to Fix the DTC P0122 2003 Nissan Sentra?

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 P0122 2003 Nissan Sentra 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 P0122 2003 Nissan Sentra code?

Need more information on how to fix the P0122 2003 Nissan Sentra code? Get Access to Factory Service Manuals

Need Help with the 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 P0122 2003 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0122 in a 2003 Nissan Sentra?

The common symptoms of OBDII code P0122 in a 2003 Nissan Sentra include issues with acceleration, rough idling, stalling, and a decrease in fuel efficiency.

2. What does the OBDII code P0122 indicate in a 2003 Nissan Sentra?

OBDII code P0122 in a 2003 Nissan Sentra indicates a Throttle Position Sensor/Switch '1' Circuit Low Input error, meaning the signal from the throttle position sensor is below the expected range.

3. What are the potential causes of OBDII code P0122 in a 2003 Nissan Sentra?

The potential causes of OBDII code P0122 in a 2003 Nissan Sentra include a faulty throttle position sensor, damaged wiring or connectors, a dirty throttle body, or issues with the engine control module (ECM).

4. How can I diagnose the OBDII code P0122 in a 2003 Nissan Sentra?

To diagnose OBDII code P0122 in a 2003 Nissan Sentra, you can use an OBDII scanner to read the code and check the throttle position sensor's voltage output. Inspect the sensor, wiring, and connectors for any visible damage.

5. Can I drive my 2003 Nissan Sentra with OBDII code P0122?

It is not recommended to drive your 2003 Nissan Sentra with OBDII code P0122, as it can lead to poor engine performance and potential safety hazards. It's best to address the issue promptly.

6. How do I repair OBDII code P0122 in a 2003 Nissan Sentra?

To repair OBDII code P0122 in a 2003 Nissan Sentra, you may need to replace the throttle position sensor, repair or replace damaged wiring or connectors, clean the throttle body, or reset the ECM.

7. Can a dirty throttle body cause OBDII code P0122 in a 2003 Nissan Sentra?

Yes, a dirty throttle body can cause OBDII code P0122 in a 2003 Nissan Sentra as it can affect the proper functioning of the throttle position sensor and lead to inaccurate readings.

8. How important is it to fix OBDII code P0122 in a 2003 Nissan Sentra promptly?

It is essential to fix OBDII code P0122 in a 2003 Nissan Sentra promptly to prevent further damage to the engine, ensure optimal performance, and maintain fuel efficiency.

9. Can I reset the OBDII code P0122 in a 2003 Nissan Sentra by disconnecting the battery?

While disconnecting the battery may temporarily clear the code, it is not a recommended long-term solution. It's best to diagnose and repair the underlying issue causing OBDII code P0122 in a 2003 Nissan Sentra.

10. How much does it typically cost to repair OBDII code P0122 in a 2003 Nissan Sentra?

The cost to repair OBDII code P0122 in a 2003 Nissan Sentra can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor.

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