Engine-Codes.com
Engine-Codes – Nissan – P1128 2003 Nissan Altima Sedan

P1128 2003 Nissan Altima Sedan Code - Throttle Control Motor Circuit Short

Quick Answer

The P1128 code for a 2003 Nissan Altima Sedan 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 2003 Nissan Altima Sedan 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 16, 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 2003 Nissan Altima Sedan Description

The P1128 code for a 2003 Nissan Altima Sedan 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 motor is a crucial component in the vehicle's electronic throttle control system, which replaces the traditional throttle cable with an electronic sensor. When this circuit malfunctions, it can lead to issues with engine performance, fuel efficiency, and overall drivability.

OBDII Code P1128 2003 Nissan Altima Sedan - Throttle Control Motor Circuit Short
P1128 2003 Nissan Altima Sedan Code - Throttle Control Motor Circuit Short

Common Causes of P1128 2003 Nissan Altima Sedan

  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. Water or debris intrusion in the throttle control motor circuit
  5. Corrosion in the electrical connections

Symptoms of P1128 2003 Nissan Altima Sedan

  1. Erratic idling
  2. Stalling
  3. Hesitation during acceleration
  4. Lack of power
  5. Poor fuel economy

How to Fix P1128 2003 Nissan Altima Sedan

  1. Begin by conducting a thorough inspection of the throttle control motor circuit, checking for any visible damage to wiring or connectors.
  2. Test the throttle control motor and its connections using a multimeter to determine if it is functioning correctly.
  3. Inspect the engine control module (ECM) for any signs of damage or malfunction that could be causing the circuit short.
  4. Replace any damaged wiring, connectors, or components in the throttle control motor circuit as needed.
  5. Clear the diagnostic trouble codes from the vehicle's ECM and perform a test drive to ensure that the issue has been resolved.

Cost to Fix P1128 2003 Nissan Altima Sedan

The typical repair costs for addressing a Throttle Control Motor Circuit Short can range from $200 to $500, including parts and labor. However, it is essential to note that 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. Most auto repair shops commonly charge between $80 and $150 per hour, but rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to check local rates for a more precise estimate before proceeding with the repair.

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 2003 Nissan Altima Sedan code?

Need more information on how to fix the P1128 2003 Nissan Altima Sedan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1128 2003 Nissan Altima Sedan 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 2003 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P1128 in a 2003 Nissan Altima Sedan?

The common symptoms of code P1128 in a 2003 Nissan Altima Sedan include poor engine performance, rough idling, stalling, and a noticeable decrease in fuel efficiency.

2. What does the OBDII code P1128 for a 2003 Nissan Altima Sedan indicate?

Code P1128 indicates a Throttle Control Motor Circuit Short in the throttle actuator control system of the vehicle.

3. What are the possible causes of OBDII code P1128 in a 2003 Nissan Altima Sedan?

Possible causes of code P1128 in a 2003 Nissan Altima Sedan include a faulty throttle control motor, wiring issues in the throttle control circuit, or a damaged throttle body.

4. How can I diagnose the Throttle Control Motor Circuit Short in my 2003 Nissan Altima Sedan?

Diagnosing a Throttle Control Motor Circuit Short involves using an OBDII scanner to retrieve the trouble codes, inspecting the throttle control motor and related wiring, and performing a thorough visual inspection of the throttle body components.

5. What are some repair tips for fixing OBDII code P1128 in a 2003 Nissan Altima Sedan?

Repair tips for resolving code P1128 include repairing or replacing the throttle control motor, repairing any damaged wiring in the throttle control circuit, and cleaning or replacing the throttle body if necessary.

6. Can I drive my 2003 Nissan Altima Sedan with OBDII code P1128?

It is not recommended to drive your 2003 Nissan Altima Sedan with code P1128, as it can lead to further damage to the throttle control system and affect the vehicle's performance.

7. How much does it cost to repair OBDII code P1128 in a 2003 Nissan Altima Sedan?

The cost of repairing code P1128 in a 2003 Nissan Altima Sedan can vary depending on the exact cause of the issue, but it typically ranges from $200 to $500 including parts and labor.

8. Is OBDII code P1128 a common issue in 2003 Nissan Altima Sedans?

While not extremely common, code P1128 can occur in 2003 Nissan Altima Sedans due to issues with the throttle control system components.

9. Can a DIY enthusiast fix OBDII code P1128 in a 2003 Nissan Altima Sedan?

Depending on the skill level and experience of the individual, a DIY enthusiast may be able to diagnose and repair code P1128 in a 2003 Nissan Altima Sedan, especially if they have access to the necessary tools and resources.

10. Will resetting the OBDII system clear code P1128 in a 2003 Nissan Altima Sedan?

Resetting the OBDII system may temporarily clear code P1128, but it is important to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

Discuss the causes and fixes for P1128 2003 Nissan Altima Sedan OBDII Code

Submit a New Comment

Code P1128 2003 Nissan Altima Sedan comments

No comments found for this page.