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Engine-Codes – Nissan – P0123 2010 Nissan Versa

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

Quick Answer

The P0123 code in a 2010 Nissan Versa indicates a problem with the Throttle Position Sensor/Switch '1' Circuit having a high input. Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the TPS circuit, Malfunctioning ECU. 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 Versa indicates Throttle Position Sensor/Switch '1' Circuit High Input.
Common causes
Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the TPS circuit, Malfunctioning ECU.
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 11, 2024
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Code P0123 2010 Nissan Versa Description

The P0123 code in a 2010 Nissan Versa indicates a problem with the Throttle Position Sensor/Switch '1' Circuit having a high input. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic fuel injection system, as it monitors the position of the throttle valve, informing the engine control unit (ECU) about how much air is entering the engine. The ECU uses this information to adjust fuel delivery and control the engine's performance. When the TPS reports a high input signal, it means that the voltage from the sensor is higher than expected, which can lead to various performance issues.

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

Common Causes of P0123 2010 Nissan Versa

  1. Faulty throttle position sensor
  2. Damaged wiring or connectors in the TPS circuit
  3. Malfunctioning ECU
  4. Corrosion or contamination in the TPS circuit
  5. Incorrect throttle adjustment

Symptoms of P0123 2010 Nissan Versa

  1. Poor fuel efficiency
  2. Rough idling
  3. Hesitation or stalling when accelerating
  4. Lack of power or response from the engine

How to Fix P0123 2010 Nissan Versa

  1. Begin by diagnosing the specific cause of the high input signal using a diagnostic scanner to read the code and pinpoint the issue.
  2. Inspect the throttle position sensor for any signs of damage or wear, and replace it if necessary.
  3. Check the wiring and connectors in the TPS circuit for any corrosion, damage, or loose connections, and repair or replace them as needed.
  4. Test the ECU to ensure it is functioning correctly and replace it if it is found to be faulty.
  5. Calibrate the throttle position sensor and perform a thorough test drive to ensure the issue has been resolved.

Cost to Fix P0123 2010 Nissan Versa

The typical repair costs for addressing a P0123 code in a 2010 Nissan Versa can vary depending on the specific cause of the issue. On average, replacing a faulty throttle position sensor can cost between $100 and $200, while repairing damaged wiring or connectors may range from $50 to $150. If the ECU needs to be replaced, the cost can be significantly higher, potentially ranging from $500 to $1000 or more. It's important to factor in labor costs, which can vary between $80 and $150 per hour at most auto repair shops. Keep in mind that rates may differ based on location, vehicle make and model, and the complexity of the repair.

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 Versa Code

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

The common symptoms of code P0123 include issues with acceleration, reduced engine power, surging or hesitation while driving, and in some cases, the vehicle going into "limp mode."

2. What does the OBDII code P0123 'Throttle Position Sensor/Switch '1' Circuit High Input' indicate in a 2010 Nissan Versa?

Code P0123 typically indicates that the Engine Control Module (ECM) has detected a higher than expected voltage from the throttle position sensor or its circuit.

3. What are the possible causes of OBDII code P0123 in a 2010 Nissan Versa?

Potential causes of code P0123 include a faulty throttle position sensor, damaged wiring or connectors in the throttle position sensor circuit, a dirty throttle body, or an issue with the ECM.

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

Diagnosing code P0123 involves using a scan tool to read the code, checking the throttle position sensor's voltage with a multimeter, inspecting the wiring and connectors for damage, and testing the throttle body for proper operation.

5. Can I continue driving my 2010 Nissan Versa with OBDII code P0123?

It is not recommended to continue driving with code P0123 present, as it can lead to further damage to the engine or drivetrain components. It's best to address the issue promptly.

6. How do I repair OBDII code P0123 in my 2010 Nissan Versa?

Repairing code P0123 may involve replacing the throttle position sensor, repairing or replacing damaged wiring or connectors, cleaning the throttle body, or reprogramming the ECM if necessary.

7. Will resetting the OBDII code P0123 in my 2010 Nissan Versa make it go away permanently?

Resetting the code without addressing the underlying issue will not make it go away permanently. The root cause of the problem needs to be identified and fixed to prevent the code from reoccurring.

8. Can a DIY enthusiast fix OBDII code P0123 in a 2010 Nissan Versa?

Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to address code P0123 by replacing the throttle position sensor or checking the wiring. However, more complex diagnostics may require professional assistance.

9. How much does it cost to repair OBDII code P0123 in a 2010 Nissan Versa?

The cost of repairing code P0123 can vary depending on the specific issue causing the code, the labor rates in your area, and whether you choose to do the repairs yourself or take your vehicle to a mechanic. Costs may range from a few hundred to over a thousand dollars.

10. Can OBDII code P0123 in a 2010 Nissan Versa cause other problems if left untreated?

If left untreated, code P0123 can potentially lead to poor engine performance, decreased fuel efficiency, and further damage to related components such as the throttle body or ECM. It is important to address the issue promptly to prevent additional problems.

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