AutoCodes – Chevrolet – C128E Chevrolet

C128E Chevrolet Code - ABS Master Cylinder Pressure Sensor Raw Offset Error

Quick Answer

The Electronic Brake Control Module (EBCM) uses input from the master cylinder pressure sensor for more accurate control during a 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: C128E Chevrolet indicates ABS Master Cylinder Pressure Sensor Raw 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.

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Code Popularity 931

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C128E Chevrolet Description

The Electronic Brake Control Module (EBCM) uses input from the master cylinder pressure sensor for more accurate control during a vehicle stability enhancement system event. The master cylinder pressure sensor is internal to the brake pressure modulator.

OBDII Code C128E Chevrolet - ABS Master Cylinder Pressure Sensor Raw Offset Error - AutoCodes.com — C128E Chevrolet Code - ABS Master Cylinder Pressure Sensor Raw Offset Error

What does this mean?

What are the Possible Causes of the DTC C128E 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 C128E 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 C128E 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.

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Need more information on how to fix the C128E Chevrolet code? Get Access to Factory Service Manuals

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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 C128E Chevrolet Code

1. What are the common symptoms of OBDII code C128E in a Chevrolet related to ABS Master Cylinder Pressure Sensor Raw Offset Error?

- Common symptoms include the ABS warning light illuminating on the dashboard, potential loss of ABS functionality, and possible issues with brake performance.

2. What are the possible causes of OBDII code C128E in a Chevrolet indicating ABS Master Cylinder Pressure Sensor Raw Offset Error?

- Causes may include a faulty master cylinder pressure sensor, damaged wiring or connectors, low brake fluid levels, or issues with the ABS control module.

3. How can I diagnose OBDII code C128E in a Chevrolet for ABS Master Cylinder Pressure Sensor Raw Offset Error?

- Diagnosis typically involves using a professional OBDII scanner to read the specific code, inspecting the master cylinder pressure sensor and related components, and checking for any visible signs of damage or corrosion.

4. Is it safe to drive my Chevrolet with OBDII code C128E indicating ABS Master Cylinder Pressure Sensor Raw Offset Error?

- It is not recommended to drive the vehicle with this code present, as it can impact the proper functioning of the ABS system and potentially compromise braking performance in certain situations.

5. What are some repair tips for fixing OBDII code C128E related to ABS Master Cylinder Pressure Sensor Raw Offset Error in a Chevrolet?

- Repair tips may include checking and replacing the master cylinder pressure sensor, repairing any damaged wiring or connectors, ensuring proper brake fluid levels, and resetting the ABS system after making repairs.

6. Can I reset OBDII code C128E in a Chevrolet indicating ABS Master Cylinder Pressure Sensor Raw Offset Error on my own?

- While you may be able to clear the code temporarily using an OBDII scanner, it is important to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it typically cost to repair OBDII code C128E in a Chevrolet related to ABS Master Cylinder Pressure Sensor Raw Offset Error?

- The cost of repairs can vary depending on the specific issue causing the code, the labor rates in your area, and whether you choose to do the repairs yourself or take your vehicle to a professional mechanic.

8. Are there any recalls or service bulletins related to OBDII code C128E for ABS Master Cylinder Pressure Sensor Raw Offset Error in Chevrolet vehicles?

- It is recommended to check with a Chevrolet dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any relevant recalls or service bulletins for this specific OBDII code.