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Engine-Codes – Nissan – P0123 2010 Nissan Sentra

P0123 2010 Nissan Sentra Code - Throttle Position Sensor/Switch '1' Circuit High Input

Quick Answer

The P0123 diagnostic trouble code (DTC) for a 2010 Nissan Sentra indicates a problem with the Throttle Position Sensor/Switch '1' Circuit High Input. Common causes include Faulty throttle position sensor, Wiring or connector issues in the TPS circuit, Corrosion or contamination in the TPS sensor. 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
P0123 2010 Nissan Sentra indicates Throttle Position Sensor/Switch '1' Circuit High Input.
Common causes
Common causes include Faulty throttle position sensor, Wiring or connector issues in the TPS circuit, Corrosion or contamination in the TPS sensor.
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 P0123 2010 Nissan Sentra Description

The P0123 diagnostic trouble code (DTC) for a 2010 Nissan Sentra indicates a problem with the Throttle Position Sensor/Switch '1' Circuit High Input. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic fuel injection system, responsible for monitoring the position of the throttle valve and sending this information to the engine control module (ECM). The ECM uses this data to adjust fuel delivery and ignition timing for optimal engine performance.

OBDII Code P0123 2010 Nissan Sentra - Throttle Position Sensor/Switch '1' Circuit High Input
P0123 2010 Nissan Sentra Code - Throttle Position Sensor/Switch '1' Circuit High Input

Common Causes of P0123 2010 Nissan Sentra

  1. Faulty throttle position sensor
  2. Wiring or connector issues in the TPS circuit
  3. Corrosion or contamination in the TPS sensor
  4. ECM software or hardware issues
  5. Mechanical problems with the throttle body

Symptoms of P0123 2010 Nissan Sentra

  1. Rough idling or stalling
  2. Hesitation or lack of response when accelerating
  3. Poor fuel efficiency
  4. Engine misfires
  5. Illumination of the Check Engine Light

How to Fix P0123 2010 Nissan Sentra

  1. Begin by diagnosing the issue using a scan tool to confirm the P0123 code and identify the specific problem with the TPS.
  2. Inspect the wiring and connectors in the TPS circuit for any damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test the throttle position sensor using a multimeter to check for proper voltage output. Replace the sensor if it is faulty.
  4. Clear the DTC and reset the ECM to see if the code returns. Test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying issues with the throttle body or ECM.

Cost to Fix P0123 2010 Nissan Sentra

The typical repair costs for addressing a P0123 code on a 2010 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 price of a new throttle position sensor, wiring repairs, and diagnostic time. 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 high voltage from the Throttle Position Sensor (TPS) '1' 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 P0123 2010 Nissan Sentra Code

1. What are common symptoms of OBDII code P0123 in a 2010 Nissan Sentra?

- Common symptoms include issues with acceleration, decreased fuel efficiency, and potential stalling of the vehicle.

2. What does the OBDII code P0123 on a 2010 Nissan Sentra indicate?

- The code P0123 indicates a high input signal in the Throttle Position Sensor/Switch '1' circuit of the vehicle.

3. What are the possible causes of OBDII code P0123 on a 2010 Nissan Sentra?

- Possible causes include a faulty throttle position sensor, damaged wiring in the circuit, a malfunctioning engine control module (ECM), or a poor electrical connection.

4. How can I diagnose the OBDII code P0123 in my 2010 Nissan Sentra?

- Diagnosing the code involves using an OBDII scanner to retrieve the code, checking the throttle position sensor and its wiring for any issues, and testing the sensor's voltage output.

5. Can I still drive my 2010 Nissan Sentra with OBDII code P0123 present?

- It is not recommended to drive the vehicle with code P0123 present, as it can lead to performance issues and potential safety hazards.

6. How can I repair OBDII code P0123 on my 2010 Nissan Sentra?

- Repair options include replacing the throttle position sensor, repairing any damaged wiring, ensuring a secure electrical connection, or resetting the ECM.

7. Are there any DIY tips for fixing OBDII code P0123 in a 2010 Nissan Sentra?

- While some basic troubleshooting can be done, it is recommended to consult a professional mechanic for a proper diagnosis and repair to ensure the issue is resolved correctly.

8. How much does it cost to fix OBDII code P0123 on a 2010 Nissan Sentra?

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

9. Will resetting the OBDII code P0123 on my 2010 Nissan Sentra 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. Is OBDII code P0123 a common problem in 2010 Nissan Sentras?

- While it may not be extremely common, issues with the throttle position sensor leading to code P0123 can occur in 2010 Nissan Sentras and other vehicles.

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