AutoCodes – Nissan – P0123 2008 Nissan Versa

P0123 2008 Nissan Versa Code - Throttle Position Sensor/Switch '1' Circuit High Input

Quick Answer

The Throttle Position Sensor (TPS) 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
P0123 2008 Nissan Versa indicates Throttle Position Sensor/Switch '1' Circuit High 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 7,628
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 P0123 2008 Nissan Versa Description

The Throttle Position Sensor (TPS) 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 P0123 2008 Nissan Versa - Throttle Position Sensor/Switch '1' Circuit High Input - AutoCodes.com
P0123 2008 Nissan Versa Code - Throttle Position Sensor/Switch '1' Circuit High Input

What are the Possible Causes of the DTC P0123 2008 Nissan Versa?

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

How to Fix the DTC P0123 2008 Nissan Versa?

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 P0123 2008 Nissan Versa 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 P0123 2008 Nissan Versa code?

Need more information on how to fix the P0123 2008 Nissan Versa code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0123 2008 Nissan Versa 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 P0123 2008 Nissan Versa Code

1. What are the common symptoms of OBDII code P0123 on a 2008 Nissan Versa?

- Common symptoms include the engine stalling, reduced fuel efficiency, hesitation or lack of response when pressing the gas pedal, and the check engine light illuminating.

2. What causes the Throttle Position Sensor/Switch '1' Circuit High Input error code on a 2008 Nissan Versa?

- The P0123 code is typically triggered by a faulty throttle position sensor, damaged wiring or connectors leading to the sensor, or issues with the throttle control system itself.

3. How can I diagnose the Throttle Position Sensor/Switch '1' Circuit High Input issue on my 2008 Nissan Versa?

- You can diagnose the problem by performing a visual inspection of the throttle position sensor and its wiring, using an OBDII scanner to retrieve the error code, and testing the sensor's voltage output with a multimeter.

4. Can I continue driving my 2008 Nissan Versa with the P0123 error code?

- It is not recommended to drive your vehicle with the P0123 code as it can lead to poor engine performance, potential stalling, and further damage to the engine or other components.

5. How do I repair the Throttle Position Sensor/Switch '1' Circuit High Input issue on my 2008 Nissan Versa?

- To repair the P0123 code, you may need to replace the throttle position sensor, repair any damaged wiring or connectors, clear the error code with an OBDII scanner, and test the system to ensure the problem is resolved.

6. Can a DIY enthusiast fix the P0123 error code on a 2008 Nissan Versa?

- Depending on your skill level and access to tools, a DIY enthusiast may be able to replace the throttle position sensor or repair wiring issues causing the P0123 code. However, complex diagnosis and repair may require professional assistance.

7. Will resetting the error code make the P0123 issue go away permanently?

- Simply resetting the error code without addressing the underlying cause, such as a faulty throttle position sensor, will not permanently resolve the P0123 issue. It is crucial to diagnose and fix the root problem.

8. How much does it cost to repair the Throttle Position Sensor/Switch '1' Circuit High Input error on a 2008 Nissan Versa?

- The cost of repairing the P0123 error can vary depending on the cause of the issue, labor rates in your area, and whether you choose to replace the sensor yourself or have a mechanic do the work. Costs may range from $100 to $300 or more.

9. Are there any preventive measures to avoid the P0123 error code on a 2008 Nissan Versa?

- To prevent the P0123 code, it's advisable to perform regular maintenance checks on your vehicle, including inspecting the throttle position sensor and related components, and addressing any issues promptly to avoid sensor failure.

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