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Engine-Codes – Infiniti – P0122 2005 Infiniti G35

P0122 2005 Infiniti G35 Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Quick Answer

The P0122 code on a 2005 Infiniti G35 indicates a problem with the Throttle Position Sensor/Switch '1' Circuit Low Input. Common causes include Faulty throttle position sensor, Wiring or connector issues in the TPS circuit, Corrosion or contamination affecting TPS signal. 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
P0122 2005 Infiniti G35 indicates Throttle Position Sensor/Switch '1' Circuit Low Input.
Common causes
Common causes include Faulty throttle position sensor, Wiring or connector issues in the TPS circuit, Corrosion or contamination affecting TPS signal.
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 12, 2024
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Code P0122 2005 Infiniti G35 Description

The P0122 code on a 2005 Infiniti G35 indicates a problem with the Throttle Position Sensor/Switch '1' Circuit Low 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). The ECU uses this data to determine the appropriate air-fuel mixture for combustion and adjust the engine performance accordingly.

OBDII Code P0122 2005 Infiniti G35 - Throttle Position Sensor/Switch '1' Circuit Low Input
P0122 2005 Infiniti G35 Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Common Causes of P0122 2005 Infiniti G35

  1. Faulty throttle position sensor
  2. Wiring or connector issues in the TPS circuit
  3. Corrosion or contamination affecting TPS signal
  4. ECU malfunction or communication error
  5. Mechanical issues affecting throttle operation

Symptoms of P0122 2005 Infiniti G35

  1. Poor acceleration or lack of power
  2. Rough idling or stalling
  3. Hesitation or surging while driving
  4. Reduced fuel efficiency
  5. Limp mode activation

How to Fix P0122 2005 Infiniti G35

  1. Perform a thorough inspection of the throttle position sensor and its wiring harness for any visible damage or corrosion.
  2. Test the TPS using a multimeter to check for proper voltage output and resistance values.
  3. If the TPS is faulty, replace it with a new one following manufacturer's guidelines.
  4. Clear the diagnostic trouble codes from the ECU and reset the system to ensure proper operation.
  5. Test drive the vehicle to verify that the issue has been resolved and that the TPS is functioning correctly.

Cost to Fix P0122 2005 Infiniti G35

The typical repair costs for a Throttle Position Sensor/Switch '1' Circuit Low Input issue can range from $100 to $300, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is recommended to check local rates for a more accurate estimate.

When is the Code Detected?

An excessively low voltage from the Throttle Position Sensor (TPS) 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 P0122 2005 Infiniti G35 Code

1. What does OBDII code P0122 on a 2005 Infiniti G35 indicate?

The code P0122 in a 2005 Infiniti G35 refers to an issue with the Throttle Position Sensor/Switch '1' Circuit, specifically indicating a low input signal.

2. What are the common symptoms of a P0122 code in a 2005 Infiniti G35?

Common symptoms of a P0122 code in a 2005 Infiniti G35 may include poor acceleration, stalling, rough idling, or even difficulty starting the vehicle.

3. What are the possible causes of a P0122 code in a 2005 Infiniti G35?

Possible causes of a P0122 code in a 2005 Infiniti G35 include a faulty throttle position sensor, damaged wiring or connectors, or a problem with the engine control module (ECM).

4. How can I diagnose the cause of a P0122 code in my 2005 Infiniti G35?

To diagnose the cause of a P0122 code, you can use a scan tool to check for any other related trouble codes, visually inspect the throttle position sensor and its wiring, and perform a voltage test on the sensor.

5. Can I still drive my 2005 Infiniti G35 with a P0122 code?

It is not recommended to drive your 2005 Infiniti G35 with a P0122 code as it can lead to poor engine performance and potential safety hazards. It is best to address the issue promptly.

6. How can I repair a P0122 code in my 2005 Infiniti G35?

Repairing a P0122 code in a 2005 Infiniti G35 may involve replacing the throttle position sensor, repairing damaged wiring or connectors, or reprogramming the engine control module (ECM) if necessary.

7. Are there any DIY tips for fixing a P0122 code on a 2005 Infiniti G35?

While some basic troubleshooting like checking connections and inspecting wiring can be done DIY, it is recommended to consult a professional mechanic for accurate diagnosis and repair of a P0122 code.

8. How much does it cost to fix a P0122 code in a 2005 Infiniti G35?

The cost of fixing a P0122 code in a 2005 Infiniti G35 can vary depending on the exact cause of the issue, but it may range from around $100 to $500 or more for parts and labor.

9. Will resetting the trouble codes clear a P0122 code on a 2005 Infiniti G35?

Resetting the trouble codes may temporarily clear the P0122 code, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and fix the root cause.

10. How can I prevent a P0122 code from appearing in my 2005 Infiniti G35?

To prevent a P0122 code in your 2005 Infiniti G35, regular maintenance of the throttle position sensor, checking for any signs of wear or damage in the sensor or wiring, and addressing any related issues promptly can help avoid this trouble code.

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