Engine-Codes.com
Engine-Codes – Nissan – P0122 2003 Nissan Sentra

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

Quick Answer

The P0122 code for a 2003 Nissan Sentra indicates an issue with the Throttle Position Sensor/Switch '1' Circuit, specifically a low input signal being detected. Common causes include A faulty throttle position sensor (TPS) that is sending incorrect signals to the ECM, Damaged or corroded wiring/connectors in the TPS circuit, Issues with the ECM that are affecting the 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
P0122 2003 Nissan Sentra indicates Throttle Position Sensor/Switch '1' Circuit Low Input.
Common causes
Common causes include A faulty throttle position sensor (TPS) that is sending incorrect signals to the ECM, Damaged or corroded wiring/connectors in the TPS circuit, Issues with the ECM that are affecting the 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 13, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0122 2003 Nissan Sentra Description

The P0122 code for a 2003 Nissan Sentra indicates an issue with the Throttle Position Sensor/Switch '1' Circuit, specifically a low input signal being detected. The throttle position sensor (TPS) is a crucial component of the vehicle's fuel injection system, as it monitors the position of the throttle valve and sends this information to the engine control module (ECM). The ECM uses this data to determine the appropriate fuel delivery and ignition timing for optimal engine performance.

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

Common Causes of P0122 2003 Nissan Sentra

  1. A faulty throttle position sensor (TPS) that is sending incorrect signals to the ECM.
  2. Damaged or corroded wiring/connectors in the TPS circuit.
  3. Issues with the ECM that are affecting the TPS readings.
  4. Mechanical problems with the throttle body or throttle plate.
  5. Environmental factors such as moisture or debris affecting the TPS operation.

Symptoms of P0122 2003 Nissan Sentra

  1. Poor acceleration or lack of response when pressing the gas pedal.
  2. Rough idling or stalling when coming to a stop.
  3. Difficulty starting the vehicle, especially in cold weather.
  4. Reduced fuel efficiency or an increase in fuel consumption.
  5. Illumination of the Check Engine Light on the dashboard.

How to Fix P0122 2003 Nissan Sentra

  1. Begin by diagnosing the issue using a scan tool to confirm the P0122 code and identify the specific cause.
  2. Inspect the TPS, wiring, and connectors for any visible damage or corrosion. Replace any faulty components.
  3. Test the TPS using a multimeter to ensure it is sending the correct voltage signals.
  4. Clear the error code from the ECM and reset the system to see if the issue persists.
  5. If the problem persists, consider seeking professional help to further diagnose and repair the underlying issue.

Cost to Fix P0122 2003 Nissan Sentra

The typical repair costs for addressing a P0122 code on a 2003 Nissan Sentra can vary depending on the specific cause of the issue. In general, replacing a faulty throttle position sensor can cost between $100 and $200, while addressing wiring or connector issues may range from $50 to $150. Labor costs can add an additional $80 to $150 per hour, with the total repair bill potentially ranging from $200 to $500 or more. It's important to note that these estimates are rough averages, and actual costs may vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. It's recommended to consult with a trusted mechanic or auto repair shop for a more accurate cost estimate.

When is the Code Detected?

An excessively low voltage from the Throttle Position Sensor (TPS) is sent to Engine Control Module (ECM).

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?

Get the P0122 2003 Nissan Sentra code diagnosed by a professional: Find a repair shop in your area

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.

Discuss the causes and fixes for P0122 2003 Nissan Sentra OBDII Code

Submit a New Comment

Code P0122 2003 Nissan Sentra comments

No comments found for this page.