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Engine-Codes – Infiniti – P0123 2006 Infiniti G35

P0123 2006 Infiniti G35 Code - Throttle Position Sensor/Switch '1' Circuit High Input

Quick Answer

The diagnostic trouble code (DTC) P0123 for a 2006 Infiniti G35 refers to an issue with the Throttle Position Sensor/Switch '1' Circuit having a high input. Common causes include Faulty throttle position sensor, Damaged TPS wiring or connectors, Corrosion or debris affecting TPS operation. 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 2006 Infiniti G35 indicates Throttle Position Sensor/Switch '1' Circuit High Input.
Common causes
Common causes include Faulty throttle position sensor, Damaged TPS wiring or connectors, Corrosion or debris affecting TPS operation.
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 2006 Infiniti G35 Description

The diagnostic trouble code (DTC) P0123 for a 2006 Infiniti G35 refers to an issue with the Throttle Position Sensor/Switch '1' Circuit having a high input. The throttle position sensor (TPS) is a crucial component of the engine management system, as it monitors the position of the throttle valve and sends this information to the engine control unit (ECU). This data is used by the ECU to adjust fuel delivery and ignition timing to optimize engine performance and efficiency. When the TPS circuit reports a high input signal, it means that the voltage signal from the sensor is outside of the expected range, indicating a potential problem with the sensor or its wiring.

OBDII Code P0123 2006 Infiniti G35 - Throttle Position Sensor/Switch '1' Circuit High Input
P0123 2006 Infiniti G35 Code - Throttle Position Sensor/Switch '1' Circuit High Input

Common Causes of P0123 2006 Infiniti G35

  1. Faulty throttle position sensor
  2. Damaged TPS wiring or connectors
  3. Corrosion or debris affecting TPS operation
  4. Malfunctioning ECU
  5. Electrical issues such as a short circuit or open circuit in the TPS circuit

Symptoms of P0123 2006 Infiniti G35

  1. Check engine light illuminated
  2. Hesitation or lack of response when accelerating
  3. Rough idling or stalling
  4. Reduced fuel efficiency
  5. Difficulty maintaining a consistent speed

How to Fix P0123 2006 Infiniti G35

  1. Diagnose the issue using a scan tool to confirm the P0123 code and perform a visual inspection of the TPS and its wiring.
  2. Test the throttle position sensor using a multimeter to check for proper voltage output.
  3. Inspect and repair any damaged wiring or connectors in the TPS circuit.
  4. Replace the throttle position sensor if it is found to be faulty or malfunctioning.
  5. Clear the DTC and reset the ECU to ensure the issue is resolved.

Cost to Fix P0123 2006 Infiniti G35

The typical repair costs for addressing the P0123 code in a 2006 Infiniti G35 can vary depending on the specific cause of the issue and the cost of parts and labor. On average, the cost of replacing a throttle position sensor ranges from $100 to $300, while labor costs can range from $80 to $150 per hour. Additional costs may apply if wiring repairs or ECU diagnostics are necessary. It's advisable to consult with a trusted mechanic or auto repair shop to get a more accurate estimate based on the vehicle's specific needs and location.

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 2006 Infiniti G35 Code

1. What are the common symptoms of OBDII code P0123 in a 2006 Infiniti G35?

The common symptoms of OBDII code P0123 in a 2006 Infiniti G35 include issues with acceleration, poor engine performance, and possibly even stalling.

2. What causes the Throttle Position Sensor/Switch '1' Circuit High Input code in a 2006 Infiniti G35?

This code is typically caused by a faulty throttle position sensor or a problem with the wiring or connectors related to the sensor in the Infiniti G35.

3. How can I diagnose the Throttle Position Sensor/Switch '1' Circuit High Input issue in my 2006 Infiniti G35?

You can diagnose the issue by using an OBDII scanner to read the trouble code, inspecting the throttle position sensor and its wiring for any visible damage, and testing the sensor's voltage using a multimeter.

4. Can I still drive my 2006 Infiniti G35 with the P0123 code?

It is not recommended to drive your Infiniti G35 with the P0123 code as it can lead to further damage and unsafe driving conditions. It's best to address the issue promptly.

5. How do I repair the Throttle Position Sensor/Switch '1' Circuit High Input code in my 2006 Infiniti G35?

To repair the P0123 code, you may need to replace the throttle position sensor, repair any damaged wiring or connectors, and clear the trouble code using an OBDII scanner.

6. Are there any DIY tips for fixing the Throttle Position Sensor/Switch '1' Circuit High Input issue in a 2006 Infiniti G35?

While some simple repairs like checking and cleaning the sensor connections can be done DIY, it is recommended to consult a professional mechanic for a proper diagnosis and repair of the P0123 code.

7. How much does it cost to fix the Throttle Position Sensor/Switch '1' Circuit High Input code in a 2006 Infiniti G35?

The cost of fixing the P0123 code in a 2006 Infiniti G35 can vary depending on the extent of the issue, the parts needed, and the labor rates of the repair shop. It's best to get a few quotes from different mechanics.

8. Can a bad throttle position sensor cause other codes to appear in a 2006 Infiniti G35?

Yes, a faulty throttle position sensor can cause other related codes to appear, such as P0121 (Throttle/Pedal Position Sensor/Switch 'A' Circuit Range/Performance Problem) or P0122 (Throttle/Pedal Position Sensor/Switch 'A' Circuit Low Input).

9. Will resetting the OBDII code P0123 in a 2006 Infiniti G35 make it go away permanently?

Resetting the code may temporarily clear the warning light, but if the underlying issue causing the P0123 code is not addressed, it is likely to reappear. It's essential to diagnose and repair the root cause of the problem.

10. Is it safe to continue driving my 2006 Infiniti G35 if the throttle position sensor is malfunctioning?

It is not safe to continue driving your Infiniti G35 with a malfunctioning throttle position sensor, as it can lead to erratic engine performance, loss of power, and potential safety hazards on the road. It's best to address the issue promptly.

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