Engine-Codes.com
Engine-Codes – Infiniti – P1128 2005 Infiniti G35

P1128 2005 Infiniti G35 Code - Throttle Control Motor Circuit Short

Quick Answer

The P1128 code for a 2005 Infiniti G35 indicates a Throttle Control Motor Circuit Short. Common causes include Damaged wiring or connectors in the throttle control motor circuit, Faulty throttle control motor, Issues with the engine control module (ECM). 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
P1128 2005 Infiniti G35 indicates Throttle Control Motor Circuit Short.
Common causes
Common causes include Damaged wiring or connectors in the throttle control motor circuit, Faulty throttle control motor, Issues with the engine control module (ECM).
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 14, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1128 2005 Infiniti G35 Description

The P1128 code for a 2005 Infiniti G35 indicates a Throttle Control Motor Circuit Short. This means that there is a malfunction in the circuit that controls the throttle motor, which is responsible for regulating the amount of air entering the engine. The throttle control motor is a crucial component in the engine management system, as it directly affects the vehicle's performance and fuel efficiency.

OBDII Code P1128 2005 Infiniti G35 - Throttle Control Motor Circuit Short
P1128 2005 Infiniti G35 Code - Throttle Control Motor Circuit Short

Common Causes of P1128 2005 Infiniti G35

  1. Damaged wiring or connectors in the throttle control motor circuit
  2. Faulty throttle control motor
  3. Issues with the engine control module (ECM)
  4. Corrosion or moisture in the circuit
  5. Electrical short in the system

Symptoms of P1128 2005 Infiniti G35

  1. Loss of power or acceleration
  2. Engine stalling or rough idling
  3. Illumination of the Check Engine Light
  4. Difficulty maintaining a consistent speed
  5. Vehicle going into "limp mode"

How to Fix P1128 2005 Infiniti G35

  1. Diagnose the specific cause of the circuit short using a diagnostic scanner.
  2. Inspect the wiring and connectors in the throttle control motor circuit for any damage or corrosion.
  3. Test the throttle control motor to determine if it is functioning properly.
  4. Check the engine control module (ECM) for any faults or errors.
  5. Repair or replace any damaged components, such as wiring, connectors, the throttle control motor, or the ECM.

Cost to Fix P1128 2005 Infiniti G35

The typical repair costs for addressing a Throttle Control Motor Circuit Short can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that the diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check local rates for a more accurate estimate. Additionally, rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more affordable prices.

When is the Code Detected?

Engine Control Module (ECM) detects short both circuits between ECM and throttle control motor.

Need more information about the P1128 2005 Infiniti G35 code?

Need more information on how to fix the P1128 2005 Infiniti G35 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1128 2005 Infiniti G35 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 P1128 2005 Infiniti G35 Code

1. What are the common symptoms of OBDII code P1128 in a 2005 Infiniti G35?

The common symptoms of code P1128 in a 2005 Infiniti G35 include engine stalling, rough idling, loss of power, and the Check Engine light illuminating.

2. What does the OBDII code P1128 in a 2005 Infiniti G35 indicate?

Code P1128 in a 2005 Infiniti G35 indicates a potential issue with the Throttle Control Motor Circuit Short.

3. What are the possible causes of OBDII code P1128 in a 2005 Infiniti G35?

Possible causes of code P1128 in a 2005 Infiniti G35 include a faulty throttle control motor, wiring issues in the circuit, or a problem with the throttle position sensor.

4. How can I diagnose the Throttle Control Motor Circuit Short issue in my 2005 Infiniti G35?

Diagnosing the Throttle Control Motor Circuit Short in a 2005 Infiniti G35 involves checking the throttle control motor's wiring, connectors, and the motor itself for any visible damage or issues.

5. Can I continue driving my 2005 Infiniti G35 with OBDII code P1128?

It is not recommended to continue driving your 2005 Infiniti G35 with code P1128 as it can lead to further damage to the throttle control system and potentially unsafe driving conditions.

6. How can I repair OBDII code P1128 in my 2005 Infiniti G35?

Repairing code P1128 in a 2005 Infiniti G35 may involve replacing the throttle control motor, repairing damaged wiring, or recalibrating the throttle position sensor.

7. Will resetting the Check Engine light make OBDII code P1128 disappear in my 2005 Infiniti G35?

Resetting the Check Engine light without addressing the underlying issue causing code P1128 in a 2005 Infiniti G35 will not make the code disappear. It is important to diagnose and repair the problem to clear the code.

8. How much does it cost to fix OBDII code P1128 in a 2005 Infiniti G35?

The cost to fix code P1128 in a 2005 Infiniti G35 can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a DIY enthusiast repair OBDII code P1128 in a 2005 Infiniti G35?

While some aspects of diagnosing and repairing code P1128 in a 2005 Infiniti G35 may be tackled by a DIY enthusiast, it is recommended to consult a professional mechanic for a thorough diagnosis and repair to ensure the issue is properly resolved.

10. How long does it take to fix OBDII code P1128 in a 2005 Infiniti G35?

The time required to fix code P1128 in a 2005 Infiniti G35 can vary depending on the exact cause of the problem and the complexity of the repair. It may take a few hours to a full day for a mechanic to diagnose and address the issue.

Discuss the causes and fixes for P1128 2005 Infiniti G35 OBDII Code

Submit a New Comment

Code P1128 2005 Infiniti G35 comments

No comments found for this page.