AutoCodes – Nissan – P1128 2004 Nissan Altima Sedan

P1128 2004 Nissan Altima Sedan Code - Throttle Control Motor Circuit Short

Quick Answer

The throttle control motor is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve. Common causes include Faulty Throttle Control Motor, Throttle Control Motor harness is open or shorted, Throttle Control Motor 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: P1128 2004 Nissan Altima Sedan indicates Throttle Control Motor Circuit Short.
Common causes: Common causes include Faulty Throttle Control Motor, Throttle Control Motor harness is open or shorted, Throttle Control Motor 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.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,646

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 26, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1128 2004 Nissan Altima Sedan Description

The throttle control motor is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feedback to the ECM to control the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

OBDII Code P1128 2004 Nissan Altima Sedan - Throttle Control Motor Circuit Short - AutoCodes.com — P1128 2004 Nissan Altima Sedan Code - Throttle Control Motor Circuit Short

What does this mean?

What are the Possible Causes of the DTC P1128 2004 Nissan Altima Sedan?

Faulty Throttle Control Motor
Throttle Control Motor harness is open or shorted
Throttle Control Motor circuit poor electrical connection

How to Fix the DTC P1128 2004 Nissan Altima Sedan?

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 P1128 2004 Nissan Altima Sedan 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 P1128 2004 Nissan Altima Sedan code?

Need more information on how to fix the P1128 2004 Nissan Altima Sedan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1128 2004 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 2004 Nissan Altima Sedan Code

What does the OBDII code P1128 mean for a 2004 Nissan Altima Sedan?

The P1128 code indicates a problem with the throttle control motor circuit, suggesting that the throttle position is not within the expected range.

What are the common symptoms associated with the P1128 code?

Symptoms may include decreased engine performance, erratic idling, a check engine light, or the vehicle entering limp mode.

What could cause the P1128 code to trigger?

Common causes include a faulty throttle position sensor, damaged wiring or connectors, a malfunctioning throttle body, or issues with the engine control module (ECM).

How can I diagnose the P1128 code?

Start by using an OBDII scanner to confirm the code, then inspect the throttle position sensor and wiring for damage. Checking the throttle body for proper operation is also essential.

What repairs are typically needed to fix the P1128 code?

Repairs may involve replacing the throttle position sensor, repairing damaged wiring, cleaning or replacing the throttle body, or reprogramming the ECM if necessary.

Can I drive my 2004 Nissan Altima Sedan with the P1128 code?

While it may be possible to drive the vehicle, it is not recommended, as it could lead to poor performance or potential safety issues.

How can I clear the P1128 code after repairs?

You can clear the code using an OBDII scanner or by disconnecting the battery for a few minutes, but ensure the underlying issue is resolved first.

Is there a risk of further damage if I ignore the P1128 code?

Yes, ignoring the P1128 code can lead to reduced engine efficiency, increased emissions, and potentially cause more severe engine problems over time.

What should I do if the P1128 code returns after repairs?

If the code returns, recheck the components associated with the throttle control system, as there may still be an underlying issue or a new problem that needs to be addressed.