AutoCodes – Chevrolet – C128A Chevrolet

C128A Chevrolet Code - ABS Boost Pressure Sensor Offset Error

Quick Answer

The Electronic Brake Control Module (EBCM) uses input from the boost pressure sensor for more accurate control during brake and vehicle stability enhancement system event. Common causes include Faulty Brake Pressure Modulator, Brake Pressure Modulator harness is open or shorted, Brake Pressure Modulator 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
C128A Chevrolet indicates ABS Boost Pressure Sensor Offset Error.
Common causes
Common causes include Faulty Brake Pressure Modulator, Brake Pressure Modulator harness is open or shorted, Brake Pressure Modulator 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 972
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 03, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code C128A Chevrolet Description

The Electronic Brake Control Module (EBCM) uses input from the boost pressure sensor for more accurate control during brake and vehicle stability enhancement system event. The boost pressure sensor is internal to the brake pressure modulator.
OBDII Code C128A Chevrolet - ABS Boost Pressure Sensor Offset Error - AutoCodes.com
C128A Chevrolet Code - ABS Boost Pressure Sensor Offset Error

What are the Possible Causes of the DTC C128A Chevrolet?

  • Faulty Brake Pressure Modulator
  • Brake Pressure Modulator harness is open or shorted
  • Brake Pressure Modulator circuit poor electrical connection

How to Fix the DTC C128A Chevrolet?

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 C128A Chevrolet 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 C128A Chevrolet code?

Need more information on how to fix the C128A Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C128A Chevrolet 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 C128A Chevrolet Code

1. What are common symptoms of OBDII code C128A in a Chevrolet related to the ABS Boost Pressure Sensor Offset Error?

- Common symptoms include the ABS warning light being illuminated on the dashboard, potential loss of ABS functionality, and possible traction control issues.

2. What can cause the OBDII code C128A in a Chevrolet indicating an ABS Boost Pressure Sensor Offset Error?

- The code C128A can be triggered by a faulty ABS boost pressure sensor, wiring issues, or problems with the ABS module itself.

3. How can I diagnose the ABS Boost Pressure Sensor Offset Error in my Chevrolet when OBDII code C128A is present?

- Diagnosing this error typically involves checking the wiring connections, inspecting the ABS boost pressure sensor for any damage, and using a diagnostic tool to read live data from the ABS module.

4. Is it safe to continue driving my Chevrolet with OBDII code C128A related to the ABS Boost Pressure Sensor Offset Error?

- It is not recommended to drive your vehicle with this error code present, as it can affect the proper functioning of the ABS system, potentially compromising your safety on the road.

5. Can I reset the OBDII code C128A in my Chevrolet myself after fixing the ABS Boost Pressure Sensor Offset Error?

- Yes, once you have addressed the underlying issue causing the error code, you can reset it using an OBDII scanner or by disconnecting the car's battery for a few minutes.

6. How much does it typically cost to repair the ABS Boost Pressure Sensor Offset Error in a Chevrolet triggering OBDII code C128A?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the ABS boost pressure sensor, repairing wiring, or possibly reprogramming the ABS module. Costs can range from $100 to $500 or more.

7. Are there any DIY tips for addressing the ABS Boost Pressure Sensor Offset Error in my Chevrolet before seeking professional help?

- DIY tips include checking for loose or damaged wiring around the ABS boost pressure sensor, ensuring proper sensor connections, and inspecting the sensor for any visible signs of damage.

8. Can weather or road conditions impact the occurrence of OBDII code C128A in a Chevrolet related to the ABS Boost Pressure Sensor Offset Error?

- Extreme weather conditions or driving on rough terrain can potentially exacerbate issues with the ABS system, leading to the triggering of code C128A. Regular maintenance and care can help prevent such occurrences.

9. Will fixing the ABS Boost Pressure Sensor Offset Error and clearing OBDII code C128A improve the overall performance and safety of my Chevrolet?

- Yes, addressing this error code and ensuring proper functioning of the ABS system is crucial for maintaining optimal vehicle safety and performance, especially during emergency braking situations.

10. How long does it typically take to repair the ABS Boost Pressure Sensor Offset Error in a Chevrolet causing OBDII code C128A?

- The repair time can vary depending on the exact cause of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and fix the ABS Boost Pressure Sensor Offset Error.

Discuss the causes and fixes for C128A Chevrolet OBDII Code

Code C128A Chevrolet comments

No comments found for this page.

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