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U128D Acura Code - Power Seat Control Unit Lost Communication With Gauge Control Module

Quick Answer

The U128D diagnostic trouble code for Acura vehicles indicates that there is a communication error between the Power Seat Control Unit and the Gauge Control Module. Common causes include Loose or corroded electrical connections between the Power Seat Control Unit and Gauge Control Module, Faulty Power Seat Control Unit or Gauge Control Module, Wiring harness damage or short circuits. 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
U128D Acura indicates Power Seat Control Unit Lost Communication With Gauge Control Module.
Common causes
Common causes include Loose or corroded electrical connections between the Power Seat Control Unit and Gauge Control Module, Faulty Power Seat Control Unit or Gauge Control Module, Wiring harness damage or short circuits.
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 08, 2024
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Code U128D Acura Description

The U128D diagnostic trouble code for Acura vehicles indicates that there is a communication error between the Power Seat Control Unit and the Gauge Control Module. The Power Seat Control Unit is responsible for operating the power seats in the vehicle, while the Gauge Control Module manages various gauges and indicators on the dashboard.

OBDII Code U128D Acura - Power Seat Control Unit Lost Communication With Gauge Control Module
U128D Acura Code - Power Seat Control Unit Lost Communication With Gauge Control Module

Common Causes of U128D Acura

  1. Loose or corroded electrical connections between the Power Seat Control Unit and Gauge Control Module
  2. Faulty Power Seat Control Unit or Gauge Control Module
  3. Wiring harness damage or short circuits
  4. Software glitches in the vehicle's communication network
  5. Electrical interference from aftermarket modifications or accessories

Symptoms of U128D Acura

  1. Power seats not responding to control inputs
  2. Inaccurate or erratic readings on the dashboard gauges
  3. Warning lights illuminated on the dashboard
  4. Loss of communication with other vehicle modules
  5. Intermittent issues with power seat operation or gauge functionality

How to Fix U128D Acura

  1. Begin by conducting a thorough visual inspection of the wiring harness and connectors between the Power Seat Control Unit and Gauge Control Module.
  2. Use a diagnostic scan tool to retrieve and clear the U128D trouble code from the vehicle's system.
  3. Test the Power Seat Control Unit and Gauge Control Module for proper functionality and communication.
  4. Repair or replace any damaged wiring, connectors, or modules as needed.
  5. Perform a final test to ensure that the communication between the modules is restored, and all systems are functioning correctly.

Cost to Fix U128D Acura

The typical repair costs for addressing a U128D code in an Acura vehicle can range from $150 to $500, depending on the extent of the issue and the parts that need to be replaced. This estimate includes both parts and labor costs. It is important to note that specific diagnosis time and labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate.

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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 U128D Acura Code

1. What are the common symptoms of OBDII code U128D in an Acura related to the power seat control unit losing communication with the gauge control module?

The common symptoms include non-functional power seat controls, inaccurate gauge readings, and warning lights on the dashboard.

2. What are the possible causes of OBDII code U128D in an Acura?

The code U128D can be triggered by a faulty power seat control unit, a malfunctioning gauge control module, damaged wiring or connectors, or a communication error between the modules.

3. How can I diagnose the issue related to OBDII code U128D in my Acura?

Diagnosing the issue may involve using an OBDII scanner to retrieve the code, inspecting the power seat control unit and gauge control module, checking for loose or damaged wiring, and performing communication tests between the modules.

4. Can I still drive my Acura with the OBDII code U128D present?

It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to prevent further damage or inconvenience due to the power seat controls not functioning properly.

5. How can I repair OBDII code U128D in my Acura?

The repair process may involve replacing the faulty power seat control unit or gauge control module, repairing or replacing damaged wiring, and ensuring proper communication between the modules.

6. Is it possible to reset the OBDII code U128D in my Acura without fixing the underlying issue?

While you can clear the code using an OBDII scanner, it is important to address the root cause of the problem to prevent the code from reappearing.

7. Are there any DIY tips for addressing OBDII code U128D in my Acura?

If you have experience with automotive electrical systems, you may attempt to inspect the wiring and connectors for damage, but complex repairs or module replacements may require professional assistance.

8. Can extreme weather conditions cause OBDII code U128D to appear in an Acura?

Extreme temperatures or moisture can potentially affect the communication between modules, so it's important to keep your vehicle protected and maintained to prevent such issues.

9. How much does it typically cost to repair OBDII code U128D in an Acura?

The cost of repair can vary depending on the specific cause of the issue, but it may involve parts replacement, labor costs, and diagnostic fees, so it is advisable to get estimates from automotive professionals.

10. Is the OBDII code U128D specific to Acura vehicles, or can it occur in other car brands as well?

While this particular code may be specific to Acura vehicles, similar communication errors between control modules can occur in other car brands, triggering different OBDII codes.

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