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Engine-Codes – Nissan – P0122 2007 Nissan Sentra

P0122 2007 Nissan Sentra Code - Throttle Position Sensor/Switch 'A' Circuit Low Input

Quick Answer

The P0122 code for a 2007 Nissan Sentra indicates a problem with the Throttle Position Sensor/Switch 'A' Circuit, specifically a low input signal. Common causes include Faulty throttle position sensor, Damaged or corroded wiring/connectors in the TPS circuit, Issues with the ECM. 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 2007 Nissan Sentra indicates Throttle Position Sensor/Switch 'A' Circuit Low Input.
Common causes
Common causes include Faulty throttle position sensor, Damaged or corroded wiring/connectors in the TPS circuit, Issues with the ECM.
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 15, 2024
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Code P0122 2007 Nissan Sentra Description

The P0122 code for a 2007 Nissan Sentra indicates a problem with the Throttle Position Sensor/Switch 'A' Circuit, specifically a low input signal. The throttle position sensor (TPS) is a crucial component that monitors the position of the throttle valve and sends signals to the engine control module (ECM) to adjust fuel delivery and ignition timing. A low input signal from the TPS can lead to various performance issues in the vehicle.

OBDII Code P0122 2007 Nissan Sentra - Throttle Position Sensor/Switch 'A' Circuit Low Input
P0122 2007 Nissan Sentra Code - Throttle Position Sensor/Switch 'A' Circuit Low Input

Common Causes of P0122 2007 Nissan Sentra

  1. Faulty throttle position sensor
  2. Damaged or corroded wiring/connectors in the TPS circuit
  3. Issues with the ECM
  4. Throttle body malfunction
  5. Poor electrical connection

Symptoms of P0122 2007 Nissan Sentra

  1. Rough idling or fluctuating idle speed
  2. Poor acceleration or hesitation when pressing the gas pedal
  3. Engine stalling or difficulty starting
  4. Reduced fuel efficiency
  5. Illumination of the Check Engine Light

How to Fix P0122 2007 Nissan Sentra

  1. Begin by diagnosing the TPS using a scan tool to confirm the P0122 code and check for any related codes.
  2. Inspect the wiring and connectors in the TPS circuit for any damage or corrosion. Repair or replace as necessary.
  3. Test the TPS using a multimeter to ensure it is functioning correctly. Replace the TPS if it is out of specification.
  4. Clear the fault codes from the ECM and perform a test drive to verify that the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to identify any underlying issues with the throttle body or ECM.

Cost to Fix P0122 2007 Nissan Sentra

The typical repair costs for addressing a P0122 code on a 2007 Nissan Sentra can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. This estimate includes the cost of a new throttle position sensor, wiring repairs, and diagnostic testing. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your location and vehicle specifics.

When is the Code Detected?

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

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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 2007 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0122 in a 2007 Nissan Sentra?

The common symptoms of OBDII code P0122 in a 2007 Nissan Sentra include poor acceleration, stalling, rough idling, and a decrease in fuel efficiency.

2. What does the OBDII code P0122 for a 2007 Nissan Sentra indicate?

The OBDII code P0122 for a 2007 Nissan Sentra indicates a low input in the Throttle Position Sensor/Switch 'A' circuit.

3. What are the possible causes of OBDII code P0122 in a 2007 Nissan Sentra?

Possible causes of OBDII code P0122 in a 2007 Nissan Sentra include a faulty throttle position sensor, damaged wiring or connectors, or issues with the engine control module.

4. How can I diagnose the OBDII code P0122 in my 2007 Nissan Sentra?

To diagnose OBDII code P0122 in a 2007 Nissan Sentra, you can use a scan tool to check for the code, inspect the throttle position sensor and its wiring, and test the sensor's voltage output.

5. Can I drive my 2007 Nissan Sentra with OBDII code P0122?

It is not recommended to drive your 2007 Nissan Sentra with OBDII code P0122, as it can lead to poor performance and potential safety hazards. It is best to address the issue promptly.

6. How can I repair OBDII code P0122 in my 2007 Nissan Sentra?

To repair OBDII code P0122 in a 2007 Nissan Sentra, you may need to replace the throttle position sensor, repair any damaged wiring, or reprogram the engine control module.

7. Is it safe to continue driving my 2007 Nissan Sentra if the throttle position sensor is faulty?

It is not safe to continue driving your 2007 Nissan Sentra if the throttle position sensor is faulty, as it can affect the vehicle's performance and pose a risk to your safety on the road.

8. Will resetting the OBDII code P0122 in my 2007 Nissan Sentra make it go away permanently?

Resetting the OBDII code P0122 in a 2007 Nissan Sentra may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.

9. How much does it cost to replace a throttle position sensor in a 2007 Nissan Sentra?

The cost to replace a throttle position sensor in a 2007 Nissan Sentra can vary depending on the part's quality and labor costs, but it typically ranges from $100 to $300.

10. Can a DIY enthusiast replace the throttle position sensor in a 2007 Nissan Sentra?

Replacing the throttle position sensor in a 2007 Nissan Sentra can be a manageable DIY task for those with automotive repair experience and the necessary tools. However, if unsure, it's best to consult a professional mechanic.

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