C128B 2017 Chevrolet Silverado Code - ABS Master Cylinder Pressure Sensor Offset Error
Quick Answer
The Electronic Brake Control Module uses inputs from the Electronic Brake Control Brake Pedal Position Sensor to determine when the brake is applied and how much force is used. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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
- C128B 2017 Chevrolet Silverado indicates ABS Master Cylinder Pressure Sensor Offset Error.
- Common causes
- Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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.
Code C128B 2017 Chevrolet Silverado Description
Brake pressure sensor information is communicated from the Electronic Brake Control Module (EBCM) to the Hybrid Control Processor (HCP). This information is used to schedule regenerative braking and engine autostops.
The Diagnostic Trouble Code (DTC) will be set when the Engine Control Module (ECM) detects a corrupted data message from the Electronic Brake Control Module.
What are the Possible Causes of the DTC C128B 2017 Chevrolet Silverado?
- Faulty Electronic Brake Control Module (EBCM)
- Electronic Brake Control Module harness is open or shorted
- Electronic Brake Control Module circuit poor electrical connection
- Faulty Starter/Generator Control Module
How to Fix the DTC C128B 2017 Chevrolet Silverado?
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 C128B 2017 Chevrolet Silverado 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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Frequently Asked Questions about C128B 2017 Chevrolet Silverado Code
1. What are common symptoms of OBDII code C128B in a 2017 Chevrolet Silverado?
The common symptoms include the ABS warning light illuminated on the dashboard and potential issues with the vehicle's braking system.
2. What does the OBDII code C128B in a 2017 Chevrolet Silverado indicate?
The code C128B indicates an ABS Master Cylinder Pressure Sensor Offset Error in the vehicle's anti-lock braking system.
3. What are the possible causes of OBDII code C128B in a 2017 Chevrolet Silverado?
Possible causes of code C128B include a faulty ABS master cylinder pressure sensor, wiring issues, or a problem with the ABS control module.
4. How can I diagnose OBDII code C128B in my 2017 Chevrolet Silverado?
Diagnosing code C128B usually involves using a diagnostic scanner to retrieve the specific error code, inspecting the ABS system components, and testing the ABS master cylinder pressure sensor.
5. Can I continue driving my 2017 Chevrolet Silverado with OBDII code C128B?
It is not recommended to continue driving the vehicle with code C128B, as it may affect the proper functioning of the anti-lock braking system and compromise safety.
6. How can I repair OBDII code C128B in my 2017 Chevrolet Silverado?
Repairing code C128B may involve replacing the ABS master cylinder pressure sensor, addressing any wiring issues, or reprogramming the ABS control module.
7. Will resetting the OBDII code C128B in my 2017 Chevrolet Silverado solve the issue?
Resetting the code may temporarily clear the error, but it is important to diagnose and repair the underlying issue causing code C128B to prevent it from recurring.
8. Are there any DIY tips for fixing OBDII code C128B in a 2017 Chevrolet Silverado?
While some basic troubleshooting like checking the sensor connections and wiring can be done DIY, it is recommended to consult a professional mechanic for accurate diagnosis and repair.
9. How much does it cost to repair OBDII code C128B in a 2017 Chevrolet Silverado?
The cost of repairing code C128B can vary depending on the specific issue, parts needed, and labor costs. It is advisable to get estimates from reputable auto repair shops.
10. Can OBDII code C128B in a 2017 Chevrolet Silverado be a recurring problem?
If the root cause of code C128B is not properly addressed during repair, it can become a recurring issue. Regular maintenance and thorough diagnostics can help prevent its recurrence.
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