AutoCodes – Infiniti – P0123 2005 Infiniti G35

P0123 2005 Infiniti G35 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 2005 Infiniti G35 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 5,786
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 2005 Infiniti G35 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 2005 Infiniti G35 - Throttle Position Sensor/Switch '1' Circuit High Input - AutoCodes.com
P0123 2005 Infiniti G35 Code - Throttle Position Sensor/Switch '1' Circuit High Input

What are the Possible Causes of the DTC P0123 2005 Infiniti G35?

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

How to Fix the DTC P0123 2005 Infiniti G35?

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 2005 Infiniti G35 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 2005 Infiniti G35 code?

Need more information on how to fix the P0123 2005 Infiniti G35 code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 2005 Infiniti G35 Code

1. What are common symptoms of OBDII code P0123 in a 2005 Infiniti G35?

The common symptoms of OBDII code P0123 in a 2005 Infiniti G35 include issues with acceleration, poor engine performance, and an illuminated Check Engine light.

2. What does the OBDII code P0123 'Throttle Position Sensor/Switch '1' Circuit High Input' mean for a 2005 Infiniti G35?

The code P0123 indicates that the Engine Control Module (ECM) has detected a high voltage input from the throttle position sensor or switch in the 2005 Infiniti G35.

3. What are the potential causes of OBDII code P0123 in a 2005 Infiniti G35?

Common causes of OBDII code P0123 in a 2005 Infiniti G35 include a faulty throttle position sensor, damaged wiring or connectors, or issues with the throttle body itself.

4. How can I diagnose OBDII code P0123 in my 2005 Infiniti G35?

To diagnose OBDII code P0123 in a 2005 Infiniti G35, you can use an OBDII scanner to check for the code, visually inspect the throttle position sensor and related components, and test the sensor's voltage with a multimeter.

5. Can I still drive my 2005 Infiniti G35 with OBDII code P0123?

It is not recommended to drive your 2005 Infiniti G35 with OBDII code P0123 as it can lead to poor engine performance and potential safety hazards. It's best to address the issue promptly.

6. How can I repair OBDII code P0123 in my 2005 Infiniti G35?

To repair OBDII code P0123 in a 2005 Infiniti G35, you may need to replace the throttle position sensor, repair damaged wiring or connectors, or clean the throttle body to ensure proper operation.

7. Is it possible to reset OBDII code P0123 in a 2005 Infiniti G35 without fixing the underlying issue?

Resetting the OBDII code P0123 in a 2005 Infiniti G35 without addressing the underlying issue may temporarily turn off the Check Engine light, but the problem will likely reoccur until properly repaired.

8. How much does it cost to fix OBDII code P0123 in a 2005 Infiniti G35?

The cost to fix OBDII code P0123 in a 2005 Infiniti G35 can vary depending on the specific repair needed, such as replacing the throttle position sensor or repairing wiring. Costs may range from $100 to $300 or more.

9. Can a DIY enthusiast repair OBDII code P0123 in a 2005 Infiniti G35?

Depending on your skill level and access to tools, a DIY enthusiast may be able to repair OBDII code P0123 in a 2005 Infiniti G35 by following step-by-step guides, watching tutorials, and using caution when working on the vehicle.

10. How long does it take to fix OBDII code P0123 in a 2005 Infiniti G35?

The time it takes to fix OBDII code P0123 in a 2005 Infiniti G35 can vary based on the specific repair needed. In general, it may take anywhere from 1 to 3 hours for a skilled mechanic to diagnose and repair the issue.

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